May 7 – 12, 2023
Venice, Italy
Europe/Zurich timezone

Contribution List

1895 / 1895
Greg Blume (Thomas Jefferson National Accelerator Facility)
5/7/23, 2:00 PM
MC6.T03: Beam Diagnostics and Instrumentation
Poster Presentation

The production of high-current and intense spin polarized electron beams is of great importance in electron-based facilities. Tests are planned to produce such beams in 2023 using GaAs-based photocathodes installed in the Brookhaven National Lab RHIC Coherent electron Cooling superconducting radiofrequency (SRF) photogun [1]. A fast and efficient electron polarimeter operating in the MeV...

Joseph Bateman (John Adams Institute)
5/7/23, 2:00 PM
Poster Presentation

Beam monitoring for Ultra High Dose Rate (UHDR) radiation therapy using pulsed beams, i.e. Very High Energy Electrons (VHEE), is a major challenge. The lower pulse repetition of VHEE beams means a larger dose-per-pulse is necessary to achieve the mean dose rates required for UHDR therapy (so-called FLASH). The currently used transmission ion chambers suffer drastic recombination effects under...

Mizuki Aramaki (Tokyo Institute of Technology)
5/7/23, 2:00 PM
Poster Presentation

Boron Neutron Capture Therapy(BNCT) is useful for cancer therapy. To generate safe and efficient neutron beams, we accelerate 2.5 MeV protons and irradiate a lithium target. This is an endothermic reaction that avoids activation of the accelerator and produces neutrons of relatively low energy. We are designing a beamline to deliver such protons to a lithium target. Tokyo Institute of...

Tiziana von Witzleben (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

The Large Hadron Electron Collider (LHeC) is a study
at CERN to construct an energy recovery linear accelerator
(ERL) tangentially to the High Luminosity Large Hadron
Collider (HL-LHC). This would enable deep inelastic scat-
tering collisions between electrons and protons in the ALICE
interaction region (IR2). In this design, one of the two pro-
ton beams of the HL-LHC collides with the...

Gilles Jacopo Silvi (Istituto Nazionale di Fisica Nucleare - Sez. Roma 1)
5/7/23, 2:00 PM
Poster Presentation

At EuPRAXIA@SPARC_LAB an X-ray FEL user facility is driven by a plasma accelerator in the particle-driven configuration where an ultra-relativistic beam, the driver, through a plasma generates a wake of charge density useful for accelerate a witness beam. The electron bunches are generated through the so-called comb technique in an RF injector that consist of a 1.6 cell S-band gun followed by...

Chenran Xu (Karlsruhe Institute of Technology)
5/7/23, 2:00 PM
Poster Presentation

In recent work, it has been shown that reinforcement learning (RL) is capable of outperforming existing methods on accelerator tuning tasks. However, RL algorithms are difficult and time-consuming to train and currently need to be retrained for every single task. This makes fast deployment in operation difficult and hinders collaborative efforts in this research area. At the same time, modern...

Peter Kicsiny (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

The understanding of beam-beam effects, which influence the choice of the FCC-ee design parameters for several aspects, require sophisticated and high-performance numerical simulations. The self-consistent study of the interplay of nonlinear dynamical phenomena resulting from collisions in the machine is key to accurately assess its potential performance. Although current simulation frameworks...

Shan-You Teng (National Central Univeristy)
5/7/23, 2:00 PM
Poster Presentation

Laser-wake field accelerators (LWFAs) are potential candidates to produce intense relativistic electron beams to drive compact free electron lasers (FELs) in VUV and X-ray regions. In High-Field Physics and Ultrafast Technology Laboratory at National Central University (NCU), an LWFA is being developed to produce a 250 MeV high-brightness electron beam by their 100-TW laser system. An FEL...

Sara Morales Vigo (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

A set of twelve Polycrystalline Chemical Vapour Deposition (pCVD) diamond detectors are installed in the beam injection, extraction and betatron collimation areas of the Large Hadron Collider (LHC) as fast beam loss monitoring detectors. Their high-radiation tolerance and time resolution in the order of a few ns makes them an ideal candidate to monitor bunch-by-bunch losses in the LHC beams,...

Enrico Manosperti (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

The Compact Linear Collider (CLIC) is a proposed linear accelerator designed to collide electrons and positrons at energies up to 3 TeV. In order to explore new physics and to be more competitive with other collider projects, CLIC is exploring the increase of the center-of-mass energy to 7 TeV. The CLIC Beam Delivery System (BDS) transports the lepton beams from the exit of the Main Linac to...

Lazar Nikitovic (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

In the frame of ongoing initiatives for the design of a new generation of synchrotron-based accelerators for cancer therapy with ion beams, an analysis of linac designs has been started, to address a critical element with strong impact on performance and cost of the accelerator. The goal is to identify alternatives at lower cost and similar or possibly smaller footprint than the standard 217...

Walter Lynn (University of California, Los Angeles)
5/7/23, 2:00 PM
MC3.A16: Advanced Concepts
Poster Presentation

Dielectric wakefield acceleration (DWA) is a promising approach to particle acceleration, offering high gradients and compact sizes. However, beam instabilities can limit its effectiveness. In this work, we present the result of a DWA design that uses alternating gradients to counteract quadrupole-mode induced instabilities in the drive beam. Through simulation and experimental results, we...

Yu Tang (Institute of Modern Physics, Chinese Academy of Sciences)
5/7/23, 2:00 PM
Poster Presentation

LEAF (Low Energy heavy ion Accelerator Facility) is a low-energy high-intensity heavy-ion LINAC complex for multidiscipline research. At present, the beam repetition rate is the same as the LINAC frequency of 81.25 MHz. A lower frequency would be desirable for many types of experiments employing time of flight data acquisitions. A method of increasing the bunch spacing to 98 ns by combining a...

Yimeng Chu (Institute of Modern Physics, Chinese Academy of Sciences)
5/7/23, 2:00 PM
Poster Presentation

The Lanzhou Light Ion Cancer Therapy Facility (LLICTF) is a compact medical accelerator currently under construction. It is designed to treat cancer using a 230MeV, 30mA H+ beam and a 85MeV/u, 1mA 3He2+ beam. The facility comprises two ion sources, a low-energy beam-transport (LEBT), a Radio Frequency Quadrupole (RFQ), a medium-energy beam-transport (MEBT), and the main ring accelerating...

Yaojie Zhai (Institute of Modern Physics, Chinese Academy of Sciences)
5/7/23, 2:00 PM
Poster Presentation

Spin is one of the intrinsic properties of particles. However, there are many incomprehensible problems about it. High energy polarized electron-ion collisions will provide unprecedented conditions for the study of spin physics and lead us to the study on the inner structure of matter and fundamental laws of interactions, and other forefronts of natural science. As the Phase II of the HIAF...

Sosuke Kikuchi (Research Laboratory for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

Tokyo Institute of Technology is planning a linac facility to produce 211 astatine, an isotope for αemitter cancer therapy. To produce astatine, we aim to bombard a bismuth target with helium ion beam of sufficient intensity at 28 MeV. Unlike a cyclotron, this facility will be able to accelerate a milliampere class high intensity helium ion beam. In addition, the subsequent accelerator...

Sheng Zhang (Institute of Modern Physics, Chinese Academy of Sciences)
5/7/23, 2:00 PM
Poster Presentation

Polarized beam is an effective tool in basic research. An Electron-ion collider in China (EicC)*, as a future high energy nuclear physics project, has been proposed. Eicc can provide good research conditions for precision measurements of the partonic structure of nucleon or nuclei and the study on the interactions between nucleons and so on. High quality polarized beam is helpful to the...

Yuka Ibaraki (Nagoya University)
5/7/23, 2:00 PM
Poster Presentation

The muon-dedicated linear accelerator is being developed for the muon g-2/EDM experiment at J-PARC. To suppress the decay loss during acceleration, the alternative phase focusing (APF) method inter-digital H-mode drift tube linac (IH-DTL) is adopted in the low-velocity region following a radio-frequency quadrupole linac (RFQ). We are planning to accelerate muons in 2024 using the RFQ and the...

Paul Denham (Particle Beam Physics Lab (PBPL))
5/7/23, 2:00 PM
MC6.T03: Beam Diagnostics and Instrumentation
Poster Presentation

Standard methods of measuring the transverse beam profile are not adaptable for sufficiently high-intensity beams. Therefore, the development of non-invasive techniques for extracting beam parameters is necessary. Here we present experimental progress on developing a transverse profile diagnostic that reconstructs beam parameters based on images of an ion distribution generated by beam-induced...

Moises Barbera Ramos (Instituto Universitario de Ciencia de los Materiales)
5/7/23, 2:00 PM
Poster Presentation

Solid-state plasma wakefield acceleration might be an alternative to accelerate particles with ultra-high accelerating gradients, in the order of TV/m.

In addition, due to their thermodynamic properties, 2D carbon-based materials, such as graphene layers and/or carbon nanotubes (CNT) are good candidates to be used as the media to sustain such ultra-high gradients. In particular, due to...

Cameron Robertson (John Adams Institute)
5/7/23, 2:00 PM
Poster Presentation

The CLEAR facility at CERN allows users to receive an electron beam with energy up to 200 MeV, allowing flexibility in intensity, beam size and bunch structures. Separate from the main CERN accelerator complex, it is capable of hosting numerous experiments with rapid installations at two test stands.

It would be highly desirable for many applications, but particularly those of a medical...

Marion Vanwelde (Universite libre de Bruxelles)
5/7/23, 2:00 PM
Poster Presentation

Vertical orbit excursion Fixed Field Accelerators (vFFAs) feature highly non-linear magnetic fields and strong transverse motion coupling. The detailed study of their Dynamic Aperture (DA) requires computation codes allowing long-term tracking and advanced analysis tools to take the transverse motion linear and non-linear coupling into account. This coupling completely transforms the beam...

Austin Dick (Northern Illinois University)
5/7/23, 2:00 PM
MC5.D09: Emittance manipulation, Bunch Compression and Cooling
Poster Presentation

Optical Stochastic Cooling (OSC) is a feedback beam cooling technique that uses radiation produced by a beam to correct particles' own momentum deviation. This system is made up of two undulator magnets, the pickup and kicker, separated by a bypass chicane that introduces a momentum-dependent path length. The beam produces radiation in the pickup and arrives in the kicker with a delay...

Matthew Signorelli (Cornell University (CLASSE))
5/7/23, 2:00 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

Polarization levels in the Electron Storage Ring (ESR) of the Electron-Ion Collider (EIC) must be maintained for a sufficient time before depolarized bunches are replaced. The depolarizing effects of synchrotron radiation can be minimized with spin matching, however the optics requirements for the ring must still be satisfied. Furthermore, the robustness of the polarization in the presence of...

Kowthar Noori (Iran University of Science and Technology)
5/7/23, 2:00 PM
Poster Presentation

Limited dynamic aperture which is in the consequence of strong nonlinearities in a low emittance storage ring, is a challenging issue from beam dynamics point of view. In the present study, we have applied three families of focusing and defocusing octupoles to the storage ring lattice with the aim of increasing dynamic aperture and beam lifetime . We have discussed different methods to...

Rafi Hessami (Particle Beam Physics Lab (PBPL))
5/7/23, 2:00 PM
MC2.A06: Free Electron Lasers
Poster Presentation

The ongoing Plasma-driven Attosecond X-ray source experiment (PAX) at FACET-II aims to produce coherent soft X-ray pulses of attosecond duration using a Plasma Wakefield Accelerator [1]. These kinds of X-ray pulses can be used to study chemical processes where attosecond-scale electron motion is important. For this first stage of the experiment, PAX plans to demonstrate that <100 nm bunch...

Samuel Levenson (Cornell University (CLASSE))
5/7/23, 2:00 PM
MC3.T02: Electron Sources
Poster Presentation

For the first time, photoemission of spin-polarized electron beams from gallium nitride (GaN) photocathodes are observed and characterized. The spin polarizations of the emitted electrons from epitaxially grown hexagonal and cubic GaN photocathodes activated to Negative Electron Affinity (NEA) via cesium deposition are measured in a retarding-field Mott polarimeter.

Mael Le Garrec (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

Chromaticity up to the third order in the LHC has been well observed in the LHC’s first and second operational runs, with regular beam-based measurements performed during commissioning and machine development. In previous runs however, no higher-order chromaticity could be observed. In 2022, dedicated collimators setups meant optics measurements could benefit from an improved range of...

Kellen McGee (Fermi National Accelerator Laboratory)
5/7/23, 2:00 PM
MC7.T07: Superconducting RF
Poster Presentation

Upcoming projects requiring ~650 MHz medium-to-high-beta elliptical cavities such as Michigan State University’s Facility for Rare Isotope Beams’ energy upgrade and Fermilab’s Proton Improvement Project-II drive a need to understand magnetic RF loss mechanisms in greater detail. It remains to be seen whether flux trapping mitigation techniques used in 1.3 GHz cavities are as effective at ~650...

Pablo Martín-Luna (Instituto de Física Corpuscular)
5/7/23, 2:00 PM
Poster Presentation

Charged particles moving through a carbon nanotube may be used to excite electromagnetic modes in the electron gas produced in the cylindrical graphene shell that makes up a nanotube wall. This effect has recently been proposed as a potential novel method of short-wavelength-high-gradient particle acceleration. In this contribution, the existing theory based on a linearised hydrodynamic model...

Sébastien Joly (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

Impedance-induced tune shifts and instability growth rates in the CERN Proton Synchrotron are studied thanks to the recently updated impedance model of the machine. Calculation of these beam observables are obtained using both Vlasov solvers and macroparticle tracking simulations, and are compared with those observed during dedicated measurement campaigns. Thanks to improvements in the...

Eustache Gnacadja (Universite libre de Bruxelles)
5/7/23, 2:00 PM
Poster Presentation

The IBA ProteusOne (P1) system is suitable to treat ocular tumors and achieves efficient dose conformality using state-of-the-art pencil beam scanning. Nevertheless, with the limited cyclotron current of the P1 system, clinically relevant (> 15 Gy/min) dose rates can barely be achieved in eye tumors treatment cases with the baseline configuration of the system due to the significantly high...

Seb Wilkes (University of Oxford)
5/7/23, 2:00 PM
Poster Presentation

Diffraction-limited light sources have garnered significant interest -- yet the smaller equilibrium size of their electron bunches also reduces the beam-lifetime. One remedy is to vertically excite the electron beam, for instance using a Multi Bunch Feedback (MBF) system. Previous work has demonstrated that this approach can safely increase the vertical emittance, thus beam-lifetime. However,...

Leandro Intelisano (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

Landau damping plays a crucial role in preserving single-bunch stability. In view of delivering the beam to the High-luminosity LHC (HL-LHC), the Super Proton Synchrotron (SPS) must double the intensity per bunch. In this intensity range, the loss of Landau damping (LLD) in the longitudinal plane can pose an important performance limitation. Observation of the beam response to a rigid-bunch...

Rasha Abukeshek (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
5/7/23, 2:00 PM
Poster Presentation

PERLE (Powerful Energy Recovery LINAC for Experiment) is a high-power Energy Recovery LINAC (ERL) facility with 20 mA beam current and beam energy from 250 MeV to 500 MeV featuring three passes through two cryomodules. It is a hub for validation of the ERL technology development towards future energy and intensity frontier machines. Design challenges of PERLE and its beam parameters make it a...

Mr Atacan Kilicgedik (Marmara University)
5/7/23, 2:00 PM
Poster Presentation

An 800 MHz, Radio Frequency Quadru-pole (RFQ) was designed to accelerate the proton beam to 2 MeV energy at a distance shorter than one meter in KAHVE-Lab, Turkey. A half-length test module was previously produced to investigate the local manufacturability of this RFQ cavity. The manufactured test module was subjected to mechanical, vacuum and electromagnetic tests to adjust the pressure, EM...

Eric Viklund (Northwestern University)
5/7/23, 2:00 PM
MC7.T07: Superconducting RF
Poster Presentation

Nb3Sn superconducting radiofrequency (SRF) cavities have been an ongoing research topic for many years motivated by the potential for higher accelerating gradients and quality factors compared to niobium SRF cavities. The highest performing Nb3Sn cavities are manufactured using tin vapor-diffusion coating, which creates a Nb3Sn film with a surface roughness of around 100-200 nm. This is...

Mr Zhandong Zhang (Institute of High Energy Physics)
5/7/23, 2:00 PM
Poster Presentation

One of the most fundamental measurements since the Higgs boson discovery, is its Yukawa couplings. Such a measurement is only feasible, if the centre-of-mass (CM) energy spread of the e+e- collisions can be reduced from ~50 MeV to a level comparable to the Higgs boson’s natural width of ~4 MeV. To reach such desired collision energy spread and improve the CM energy resolution in...

Anderson Sabogal (Universidad de Granada)
5/7/23, 2:00 PM
Poster Presentation

IFMIF-DONES* is a key device in the EUROfusion roadmap for studying and licensing materials for future fusion reactors. It will be a unique neutron fusion-like irradiation facility equipped with a linear particle accelerator impinging an intense deuteron beam (125 mA, 40 MeV) onto a liquid lithium target. In terms of safety analysis of the facility, relevant accidental scenarios are related to...

Yao Yang (Institute of High Energy Physics)
5/7/23, 2:00 PM
Poster Presentation

This paper proposes a new coupling slots design for the Pi-Mode structure high-frequency cavity in the China Spallation Neutron Source (CSNS) Phase II. Through simulation calculations and experimental verification, it was found that the new coupling slots design significantly improves the Q value and transmission efficiency of the high-frequency cavity. This study is of great significance...

Liam Pocher (University of Maryland)
5/7/23, 2:00 PM
MC6.A27: Machine Learning and Digital Twin Modelling
Poster Presentation

One of the Grand Challenges in beam physics relates to the use of virtual particle accelerators for beam prediction and optimization. Useful virtual accelerators rely on efficient and effective methodologies grounded in theory, simulation, and experiment. This work extends the application of the Sparse Identification of Nonlinear Dynamical systems (SINDy) algorithm, which we have previously...

Alimohammed Kachwala (Arizona State University)
5/7/23, 2:00 PM
MC2.T02: Electron Sources
Poster Presentation

Integrating the advances made in photonics with efficient electron emitters can result in the development of next generation photocathodes for various accelerator applications.
In such photonics-integrated photocathodes, light can be directed using waveguides and other photonic components on the substrate underneath a thin (<100 nm) photoemissive film to generate electron emission from...

Raul Costa (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

We present the latest updates to the PLACET3 tracking package which focus on the impact of both transverse and longitudinal wakefields on a beam travelling through accelerating and decelerating structures. The main focus of this update was the first implementation of 6D tracking through Power Extraction and Transfer Structures (PETS) for the Compact Linear Collider (CLIC) which is described...

Md Aziz Ar Rahman (Thomas Jefferson National Accelerator Facility)
5/7/23, 2:00 PM
MC6.T02: Electron Sources
Poster Presentation

Recent studies showed significant improvement in quantum efficiency (QE) by negative electron affinity (NEA) GaAs nanopillar array (NPA) photocathodes over their flat surface peers, particularly at 500 ─ 800 nm waveband. However, the underlying physics is yet to be well understood for further improvement in its performance. In this report, NEA GaAs NPA photocathodes with different dimensions...

Daniel Prelipcean (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

The Large Hadron Collider at CERN is equipped with instruments that exploit collisions between beam particles and gas targets, one of them being the Beam Gas Vertex monitor. By design, its operation generates secondary particle showers used to measure beam properties, that also result in radiation levels in the tunnel proportional to the beam intensity and gas pressure. In this work, the...

Chunguang Su (Institute of Modern Physics, Chinese Academy of Sciences)
5/7/23, 2:00 PM
Poster Presentation

As a scientific system with many subsystems, particle accelerator system is getting more complex, due to rising demands on accelerator performance. Meanwhile, it is increasingly difficult to study such complex systems using traditional research methods based on physical models. At present, machine learning (ML) is mature enough to be applied in accelerator science such as beam diagnostics and...

Pablo Andreas Arrutia Sota (Oxford University)
5/7/23, 2:00 PM
Poster Presentation

The CERN Super Proton Synchrotron (SPS) aims at providing stable proton spills of several seconds to the North Area (NA) fixed target experiments via third-integer resonant slow extraction. However, low-frequency power converter ripple (primarily at 50 and 100 Hz) and high-frequency structures (mainly at harmonics of the revolution frequency) modulate the extracted intensity, which can...

Elizabeth Breen (Old Dominion University)
5/7/23, 2:00 PM
MC5.D11: Code Developments and Simulation Techniques
Poster Presentation

The effect of radiation reaction is often negligible in inverse Compton scattering. However, in the nonlinear Compton regime, at high laser fields and high electron beam energies where electron recoil must be properly accounted for, there is experimental data which demonstrates the onset of radiation reaction * . We model the radiation reaction as a series of emissions from individual...

Yi Wu (Ecole Polytechnique Fédérale de Lausanne)
5/7/23, 2:00 PM
Poster Presentation

The high precision measurement of the centre-of-mass energy in the Future Circular Collider e+e- (FCC-ee) at Z and W energies can be realized through resonant spin depolarization utilizing transversely polarized beams. This requires a guaranteed sufficiently-high spin polarization in the presence of lattice imperfections. Investigations of the impact of misalignments on the equilibrium...

Dora Veres (European Organization for Nuclear Research)
5/7/23, 2:00 PM
Poster Presentation

Superconducting dipoles with a strong curvature (radius smaller than 2 meters, for an aperture of about 100 mm and a length of 1-3 meters) are required for applications where compactness is key, such as the synchrotron and gantry for Carbon-ion therapy developed within the European program HITRIplus.
Such magnets challenge several assumptions in the field description and put to the test the...

Sofia Johannesson (Ecole Polytechnique Fédérale de Lausanne)
5/7/23, 2:00 PM
Poster Presentation

Modelling electron cloud driven instabilities using a Vlasov approach enables studying the beam stability on time scales not accessible to conventional Particle In Cell simulation methods. A linear description of electron cloud forces, including the betatron tune modulation along the bunch, is used in the Vlasov approach. This method is benchmarked against macroparticle simulations based on...

Jiangyan Yang (GSI Helmholtzzentrum für Schwerionenforschung GmbH)
5/7/23, 2:00 PM
Poster Presentation

Slowly extracted beams from a synchrotron have temporal fluctuations, the so-called spill micro structure. The reason is related to power supply ripples that act on the quadrupole magnets, leading to unintended tune fluctuations during extraction. Related simulations regarding the dependency of spill quality on the power supply ripples are executed with varying excitation levels of the...

ChangLin Wang (Institute of Modern Physics, Chinese Academy of Sciences)
5/7/23, 2:00 PM
Poster Presentation

Surface annealing using intense nanosecond laser pulses is an emerging technique for SRF cavities. This technique can effectively reduce the cavities’ surface defects and improve their RF performance. However, previous studies in this field limited themselves on solid state lasers or gas lasers, which have very low average power and are not practical for processing actual SRF cavities with ~m2...

SHRISTI BIST (University of Petroleum and Energy Studies)
5/7/23, 2:00 PM
Poster Presentation

Radiation resistance of materials is an important area of research, relevant to nuclear reactor technology. Various challenges are associated with this research; one of which is the selection of radiation resistant material for the plasma facing wall of the reactor due to its harsh operating environment.* Recent studies reveal that WC has the potential to be developed as radiation resistant...

Katrina Howard (University of Chicago)
5/7/23, 2:00 PM
MC7.T07: Superconducting RF
Poster Presentation

The superconducting radio-frequency (SRF) community has shown that introducing certain impurities into high-purity niobium can improve quality factors and accelerating gradients. We question why some impurities improve RF performance while others hinder it. The purpose of this study is to characterize the impurity profile of niobium with a low residual resistance ratio (RRR) and correlate...

Shuai Wu (Institute of Modern Physics, Chinese Academy of Sciences)
5/7/23, 2:00 PM
Poster Presentation

A uniform distribution of nucleation tin sites is essential to the growth of high quality Nb3Sn thin film by vapor diffusion method. The less-nuclear zones were commonly observed in previous nucleation experiments. However, a fully understanding of the occurrence of less-nuclear zones has not yet been achieved. Here, the adsorption energy of nuclear agent SnCl2 on different crystal planes of...

Vilde Rieker (European Organization for Nuclear Research), Mr Laurence Wroe (University of Oxford), Kyrre Sjobak (University of Oslo), Erik Adli (University of Oslo), Cameron Robertson (John Adams Institute)
5/7/23, 2:00 PM
Poster Presentation

Real-time dosimetry for ultra-high dose-rates (UHDR) and Very High Energy Electrons (VHEE) is a challenge which is currently being studied using the electron beam at CERN Linear Accelerator for Research (CLEAR). These studies are motivated by the demand for reliable dosimetry for FLASH radiotherapy. This mode of irradiation relies on UHDR, a dose rate regime where conventional dosimetry...

Mary Bossard (University of Chicago)
5/7/23, 2:00 PM
MC1.A01: Hadron Colliders
Poster Presentation

A new electron cooling experiment is being planned at the Integrable Optics Test Accelerator (IOTA) at Fermilab for cooling ~2.5 MeV protons in the presence of intense space-charge. Electron cooling is integral to the study of beam dynamics and has valuable applications for producing high-intensity hadron beams in particle accelerators. For such goals, an electron lens to be placed in the IOTA...

Maria Maxouti (Imperial College London)
5/7/23, 2:00 PM
Poster Presentation

LhARA, the Laser-hybrid Accelerator for Radiobiological Applications*, is a proposed facility for the study of proton and ion radiation biology. The accelerator is designed to deliver a variety of ion species over a wide range of spatial and temporal profiles at ultra-high dose rates. The facility requires that the deposited dose distribution be measured in real-time. For this purpose, an...

Coline Guyot (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
5/7/23, 2:00 PM
Poster Presentation

The quest of laser plasma accelerators is of great interest for various applications such as light sources or high energy physics colliders. This research has led to numerous performance improvements, particularly in terms of beam energy versus compactness [1] and ultra-short bunch length [2]. However, these performances are often reached without the achievement of sufficient beam quality,...

Chad Pennington (Cornell University (CLASSE))
5/7/23, 2:00 PM
MC3.T02: Electron Sources
Poster Presentation

In this proceeding, we demonstrate the synthesis of epitaxial Cs$_3$Sb films with a high degree of crystallinity on silicon carbide substrates. Films less than 10 nm thin are grown in vacuum and exhibit percent level quantum efficiencies at 532 nm. We find a positive correlation between quantum efficiency and improved crystallinity of the photocathode film, particularly in the longer...

Malika Meddahi (European Organization for Nuclear Research)
5/8/23, 9:40 AM
Invited Oral Presentation

The upgrade project for the LHC injectors is described in detail, highlighting the major improvements implemented in the injector chain. Lessons in technical progress, project management and planning are presented. The performance of the upgraded systems in intensity, average particle flux and beam brightness is described and compared to the upgrade goals and LHC`s original design parameters....

Emanuel Karantzoulis (Elettra-Sincrotrone Trieste S.C.p.A.)
5/8/23, 10:10 AM
Invited Oral Presentation

An overview of the project status of the future Italian 2.4 GeV 4th generation light source Elettra 2.0 that will replace the existing 3rd generation light source Elettra is presented, including challenges and perspectives in the design and construction of such light sources. Elettra 2.0 will be the ultra-low emittance light source that will provide ultra-high brilliance and coherence and...

Kazuo Hasegawa (National Institutes for Quantum Science and Technology)
5/8/23, 11:40 AM
Invited Oral Presentation

The Linear IFMIF Prototype Accelerator (LIPAc) has been constructed in Rokkasho, Japan to demonstrate the validity of the low energy section of an IFMIF deuteron accelerator up to 9 MeV with a beam current of 125 mA in continuous wave (CW) under the joint collaboration between EU and Japan. The short-pulse 125-mA deuteron beam acceleration to 5 MeV was successfully demonstrated in 2019. Now...

Claire Antoine (Commissariat à l'Energie Atomique)
5/8/23, 12:10 PM
Invited Oral Presentation

Superconducting RF thin film (SRF-TF) technology for RF cavities has only recently began to achieve accelerator field gradients and Q-factors close to that of bulk niobium SRF cavities. These thin films (such as Nb3Sn, NbTiN, Mg2B and multilayer structures) offer the ability to operate at higher temperatures (4.2 K instead of 1.9 K) thereby increasing the operating efficiency of the RF system...

Deepa Angal-Kalinin (Science and Technology Facilities Council)
5/8/23, 2:30 PM

Delivering and tailoring high brightness electron beams for a wide range of novel applications is a challenging task in single pass accelerator test facilities. This paper will review beam dynamics challenges at single pass accelerator test facilities in Europe to generate, transport and tailor low- to medium-energy high brightness electron beams for a range of novel applications.

Cedric Thaury (Laboratoire d'Optique Appliquée)
5/8/23, 2:30 PM

Laser-plasma acceleration is a technique for producing ultra-relativistic electrons that takes advantage of the ability of plasma to carry arbitrarily intense fields. In practice, fields of several hundred GV/m can be produced simply by focusing an ultra-intense laser pulse in a sub-critical plasma [1]. These fields, which are 3 orders of magnitude larger than those produced in conventional...

Massimo Ferrario (Istituto Nazionale di Fisica Nucleare), Ralph Assmann (Deutsches Elektronen-Synchrotron)
5/8/23, 3:00 PM

The European Eupraxia project has recently been included in the ESFRI roadmap. EuPRAXIA is a world-wide first, new kind of compact facility and will be constructed at two European sites. One of the two sites for Eupraxia will be the INFN LNF at Frascati. The facility will be integrated with the already planned 1GeV linear accelerator.
This talk will cover the status of the technical design of...

Ralitsa Sharankova (Fermi National Accelerator Laboratory)
5/8/23, 3:30 PM
MC6.A27: Machine Learning and Digital Twin Modelling
Contributed Oral Presentation

The Fermilab Linac delivers 400 MeV H- beam to the rest of the accelerator chain. We are exploring several machine learning (ML) techniques for automated RF tuning, with an emphasis on time-evolving modeling that can account for parameter drift. Providing stable intensity, energy, and emittance is key since it directly affects downstream machines. To operate high current beam, accelerators...

Fabio Cardelli (Istituto Nazionale di Fisica Nucleare)
5/8/23, 3:30 PM
MC7.T06: Room Temperature RF
Contributed Oral Presentation

The Eupraxia@SPARC_LAB project, foreseen a 1GeV Linac based on a X-band booster composed by 16 accelerating structures working at the nominal gradient of 60MV/m. In this framework, an intense activity has started in the last years in order to prove the reliability and functionality of the X-band technology at very high peak power. The main step of this activity has been the implementation of a...

Alexander Brynes (Elettra-Sincrotrone Trieste S.C.p.A.)
5/8/23, 3:50 PM
MC5.D01: Beam Optics Lattices, Correction Schemes, Transport
Contributed Oral Presentation

A systematic study of microbunching instability is being carried out in the FERMI free-electron laser linac driver. This talk will report about modelling and experiments related to the instability, including the development of an infrared (IR) spectrometer for the diagnostic of microbunching-induced coherent emission in the IR spectral range.

Zihan Zhu (Shanghai Institute of Applied Physics)
5/8/23, 3:50 PM
MC6.A27: Machine Learning and Digital Twin Modelling
Contributed Oral Presentation

In the commissioning and operational stage of X-ray free-electron lasers (XFELs), it is a challenging problem to efficiently tune the large-scale scientific machines which consist of hundreds and thousands of components. Here we tried to introduce several tuning algorithms to achieve automatic tuning in XFELs and compared the performance. This also paves the way for further development of...

Ryan Roussel (SLAC National Accelerator Laboratory)
5/8/23, 4:10 PM
MC6.A27: Machine Learning and Digital Twin Modelling
Contributed Oral Presentation

Although beam emittance is critical for the performance of high-brightness accelerators, optimization is often time limited as emittance calculations, commonly done via quadrupole scans, are typically slow. Such calculations are a type of multi-point queries, i.e. each query requires multiple secondary measurements. Traditional black-box optimizers such as Bayesian optimization are slow and...

Christoph Matejcek (Johannes Gutenberg University Mainz)
5/8/23, 4:30 PM
MC1.A18: Energy Recovery Linacs(ERLs)
Poster Presentation

An important part of the new accelerator MESA (Mainz Energy-recovering Superconducting Accelerator) is the beamline connecting the pre-accelerator with the main accelerator. The setup includes a vertical parallel beam offset realized with two dipoles. These are designed in a way, that they can serve as steerer for the main accelerator and will be discussed in this contribution. Furthermore,...

Mael Le Garrec (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

The Large Hadron Collider (LHC) arcs have been designed for a FODO optics with roughly 90° betatron phase advance per arc cell, but not necessarily with exactly the same optics in the eight sectors of the ring. Measuring an optics with a significantly different arc cell phase advance, e.g. 60° which is at the limit for aperture at LHC injection, offers the possibility of understanding the LHC...

Yulu Huang (Institute of Modern Physics, Chinese Academy of Sciences)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

750 MHz IH-DTL with the capability to accelerate protons from 3 to 10 MeV was proposed for the compact therpy linac that now under development in IMP. Four drift tube sections were housed in a single vacuum chamber and coupled with three large drift tubes which housing focusing triplet lens inside. In each drift tube section, there were 9 to 10 drift tubes, supported by the separated ridges....

Sam Posen (Fermi National Accelerator Laboratory)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

After the PIP-II linac is commissioned as a new start of the Fermilab Acclerator Complex, the Booster will become a bottleneck for future high intensity particle physics research at Fermilab. An SRF linac is proposed as a replacement for the booster to enable future higher power proton beams in the Fermilab complex - this would include neutrino-based and muon-based studies, dark matter...

J. Berg (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A09: Muon Accelerators and Neutrino Factories
Poster Presentation

To reach the desired energy for a muon collider, muons should be accelerated to 5 TeV. This acceleration must be rapid to avoid muon decays, while simultaneously having a high average bending field to minimize the the required RF voltage. One concern with high energy muons is radiation from neutrinos, produced from muon decay, interacting with matter far from the accelerator. While this is...

Mr Sergey Kolokolchikov (International Union of Pure and Applied Physics)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

This study is motivated by the search for the electric dipole moment (EDM) of elementary particles. The most promising idea in that regard is the “Frozen Spin” concept first proposed by the BNL. This concept, however, requires the building of a brand-new facility devoted to the EDM-search. NICA is not such a facility, hence the need for a modification compatible with the existing optics; one...

J. Berg (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A09: Muon Accelerators and Neutrino Factories
Poster Presentation

I describe a fixed field alternating gradient (FFA) lattice design to accelerate muons final energy for a muon collider. Ideally the muons would be accelerated to 5 TeV to reach the desired energy for physics studies*. An FFA allows the acceleration of muons over a large energy range without changing magnetic fields. It is an alternative to a pulsed synchrotron in which magnet fields must be...

Yao Zhang (Chongqing University)
5/8/23, 4:30 PM
MC2.A04: Circular Accelerators
Poster Presentation

Many applications of synchrotron light sources such as imaging, lithography and angle-resolved photoemission spectroscopy can benefit from high photon flux, which, unlike the brightness, is almost independent of electron beam transverse emittance. To realize high photon flux, it is desired to increase the stored current or number of periods of insertion devices. To this end, a low energy...

Wen Song (University of Science and Technology of China)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

Hefei Advanced Light Facility (HALF) was designed as fourth generation light source based on the diffraction-limited storage ring (DLSR). The pre-research has been completely done, due to the smaller beam dynamic aperture, about 10mm, beam inject could not completed by the traditional bump magnet. We purposed and designed a novel dual-channel kicker, with other two traditional kicker, they...

Zhe Duan (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

The High Energy Photon Source (HEPS) is a fourth generation photon source, including a storage ring, a booster ring and a Linac. Due to the small dynamic aperture of the storage ring, a novel on-axis swap-out injection scheme was chosen. Here, the 6GeV booster acts as an accumulating ring during that injection process. To extract 6 GeV beam from the booster before injection into the storage...

Andreas Grau (Karlsruhe Institute of Technology)
5/8/23, 4:30 PM
MC2.T15: Undulators and Wigglers
Poster Presentation

The far-infrared linac and test experiment (FLUTE) serves as an accelerator test facility for a variety of accelerator physics studies. FLUTE is foreseen to provide coherent radiation in ultra-short, very intense light pulses in the terahertz (THz) and far-infrared spectral range. A superconducting undulator in the accelerator structure after bunch compression offers the possibility to...

Gabriele Benedetti (ALBA-CELLS Synchrotron)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

Betatron coupling resonance has been considered by many low emittance upgrade light sources as a candidate to produce round beams. Due to the limited literature on the topic, last year an experimental campaign was undertaken on the ALBA storage ring to establish limits and requirements to operate a light source in full coupling. The work highlighted how coupling can indeed produce a round beam...

Marcello Rossetti Conti (Istituto Nazionale di Fisica Nucleare)
5/8/23, 4:30 PM
MC1.A18: Energy Recovery Linacs(ERLs)
Poster Presentation

Nowadays, Energy Recovery Linacs (ERLs) became really appealing thanks to their low environmental impact and high sustainability.
ERLs require a special low energy injector, usually named merger. The energy at merger exit is clearly the energy that can’t be recycled in the ERL machine and is the amount dumped at the end. The lower the injection energy is the more efficient is the energy...

Cameron Geddes (Lawrence Berkeley National Laboratory)
5/8/23, 4:30 PM
MC1.A16: Advanced Concepts
Poster Presentation

New R\&D concepts for particle acceleration, generation, and focusing at ultra high acceleration gradients (GeV/m and beyond) have the potential to enable future e+e- and $\gamma - \gamma$ colliders to and beyond 15 TeV energies. In addition to proven high gradient and ultra-bright beam generation, these systems have the potential to increase luminosity per unit beam power via short beams, for...

Michele Bozzolan (European Organization for Nuclear Research), Nicolo Biancacci (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

The performance of the Low Energy Ion Ring (LEIR) at CERN is mainly determined by the number of charges extracted from the machine and transferred to the downstream chain of accelerators. While the required target of 9e10 charges has now been surpassed, a series of studies have been undertaken to further push the intensity reach of LEIR. In this work, we quantify the effect of the stray fields...

Geetanjali Sharma (Diamond Light Source Ltd)
5/8/23, 4:30 PM
MC2.T15: Undulators and Wigglers
Poster Presentation

An in-vacuum Hall probe measurement bench was designed, built, and used to measure four Cryogenic Permanent Magnet Undulators (CPMUs) at 77 K at Diamond Light Source. The devices were tuned to correct the phase error at cold temperatures based on the measurements from the in-vacuum bench. The in-vacuum bench consists of a stretched wire system supplied by Danfysik and the in-house Hall probe...

Enrico Nichelatti (ENEA Casaccia), Dr Maria Denise Astorino (ENEA)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

Electron beam central-axis percentage depth dose (PDD) curves in water phantom are routinely employed to evaluate the electron beam energy at the phantom surface, in particular the mean and most probable energies from the values of R50 (half-value range) and Rp (practical range). However, these two quantities are not enough to evaluate important details of the energy distribution, such as the...

Guodong Jiang (Institute of Modern Physics, Chinese Academy of Sciences)
5/8/23, 4:30 PM
MC1.A17: High Intensity Accelerators
Poster Presentation

The accelerator high-power system provides electromagnetic energy to the acceleration structure to establish a high-power acceleration field. In pace with the current intensity development of accelerator beam, heigtening RF system performance is put on a new agenda. Temperature is a momentous parameter of accelerator RF system, which will directly affect the mechanical, electromagnetic and...

Bjorn Lindstrom (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.T19: Collimation
Poster Presentation

The High Luminosity Large Hadron Collider (HL-LHC) project foresees the upgrade of a large fraction of primary and secondary collimators of the betatron cleaning system to reduce the collimation impedance. The new collimator design also includes the installation of in-jaw beam position monitors (BPMs) to align the collimators faster and to continuously monitor the beam orbit, ensuring an...

Dr Andrea Franchi (European Synchrotron Radiation Facility), Simone Liuzzo (European Synchrotron Radiation Facility)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

While large circular colliders rely upon analysis of turn-by-turn beam trajectory data to infer and correct magnetic lattice imperfection and beam optics parameters, historically storage-ring based light sources have been exploiting orbit distortion, via the orbit response matrix. However, even large collider usually benefit of the orbit analysis during the design phase, in order to evaluate...

Chengye Xu (Institute of Modern Physics, Chinese Academy of Sciences)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

Iterative learning control(ILC) is a effictive algorithm for transient beam loading compensation. However, considering the algorithm complexity and the hardware cost, the ILC algorithm is usually implemented outside FPGA. This practice would decrease the real-time ability of the control system. In this paper, a real-time ILC algrithm will be introduced. And the result is summarized.

Axel Bernhard (Karlsruhe Institute of Technology)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

A third family of sextupole magnets was recently in-corporated at the KIT storage ring KARA (Karlsruhe Research Accelerator). Computer studies of beam dy-namics were performed with an objective to estimate benefits of operation with three sextupole families and possibility of new configuration of ring lattice to con-trol slope and curvature of momentum compaction factor as function of energy...

Shuai Wang (Tsinghua University in Beijing)
5/8/23, 4:30 PM
MC2.A08: Linear Accelerators
Poster Presentation

A 7 MeV Alvarez-type drift tube linac (DTL) had been designed and machined in the past few years for Xi'an 200 MeV proton application facility (XiPAF). This paper presents the assembly, alignment, error analysis and tuning results of the DTL. After all these tasks were completed at Tsinghua University, the DTL cavity had been transported to Xi'an for repetition measurement and test. It has...

Jan Uythoven (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

All high-energy beam dump events at the Large Hadron Collider (LHC) are analysed to verify correct functioning of the Machine Protection System and to allow early identification of potential issues. This includes the evaluation of particle losses before and during the beam dump event.
The paper describes a newly developed tool for the automated evaluation of beam losses during high energy...

Stephan Wagner (Goethe Universität Frankfurt)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

RF-Conditioning of a room temperature cavity is a long and resource intensive process. The need for constant supervision by experienced personal to avoid damage to the cavity and used equipment makes it a very expansive endeavor. To reduce the workload of the experimentalist, it was decided to develop a program utilizing machine learning, which, once finished, should have the probabilities to...

Masahiro Katoh (Hiroshima Synchrotron Radiation Center)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

A lattice of a storage ring for the future plan of UVSOR synchrotron facility, UVSOR-IV, is designed at 1 GeV electron energy. The lattice of 12 compact double achromat cells conducts to an emittance of 4.2 nm at 1 GeV electron energy and 2.3 nm at 750 MeV electron energy in achromat condition, 82.5 m circumference, and six straight sections of 4 m long and six of 1.5 m long. The lattice has...

Gwanghui Ha (Northern Illinois University), Hyung-sup Kong (Pohang Accelerator Laboratory), Seunghwan Shin (Korea University Sejong Campus)
5/8/23, 4:30 PM
MC1.A16: Advanced Concepts
Poster Presentation

We fabricated corrugated wakefield structures and did cold test of them. Since the wakefield frequency of our structure is about 0.2 THz, there are several technical issues in the bead-pull.
We present issues concerning to bead size and the wire. And issues concerning to mode converter are described as well. We manufacture a customized mode converter which change electromagnetic mode from...

Antonio Perillo Marcone (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

The baseline beam parameters of the FCC-ee contemplate different operation modes, with beam energies ranging between 45.6 GeV and 182.5 GeV. The highest expected beam stored energy reaches 20 MJ for the so-called Z operation mode (45.6 GeV), i.e. two orders of magnitude above that found in previous and operating lepton colliders.
In order to protect sensitive equipment and to limit...

Bin Wang (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

The Beijing Electron Positron Collider II will upgrade to achieve a higher beam energy and higher luminosity which need a higher beam current and smaller beam size. The consequent high beam background should be controlled within in a safety range. The beam related background at BEPCII is mainly from the Touschek effect and the beam gas effect. This paper presents the beam background study at...

Haoyu Shi (Insititute of High Energy Physics)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

The machine-detector interface (MDI) issues are one of the most complicated and challenging topics at the Circular Electron Positron Collider(CEPC). Comprehensive understandings of the MDI issues are decisive for achieving the optimal overall performance of the accelerator and detector. The CEPC machine will operate at different beam energies, from 45.5 GeV up to 180 GeV.

A flexible...

Kemin Chen (University of Science and Technology of China)
5/8/23, 4:30 PM
MC2.A24: Accelerators and Storage Rings, Other
Poster Presentation

Due to various errors, the beam does not pass through the center of magnets in a storage ring. The beam orbit is affected by additional dipole fields since magnetic field feed-down. To obtain a reference orbit, on which the beam circulates along the quadrupole axes, the beam-based alignment (BBA) is performed in the ring. In this work, a novel method based on a neural network is proposed to...

Vittorio Bencini (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

After the successful conclusion of Run1 in 2018, the AWAKE experiment is presently undergoing its second phase (Run2), which aims to demonstrate the possibility of producing high quality electron beams for high energy physics applications.
Over the last year, a significant time-investment was made to study proton beam centroid modulation effects in plasma induced by a seeding electron bunch...

Pablo Andreas Arrutia Sota (Oxford University)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

Heavy-ion single event effect (SEE) test facilities are critical in the development of microelectronic components that will be exposed to the ionizing particles present in the hostile environment of space. CHARM High-energy Ions for Micro Electronics Reliability Assurance (CHIMERA) and HEARTS have developed a high-energy ion beam capable of scanning a wide range of Linear Energy Transfer (LET)...

Tiziana von Witzleben (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

The Large Hadron Electron Collider (LHeC) is a study at CERN to construct an energy recovery linear accelerator (ERL) tangentially to the High Luminosity Large Hadron Collider (HL-LHC). This would enable deep inelastic scattering collisions between electrons and protons in the ALICE interaction region (IR2). In this design, one of the two proton beams of the HL-LHC collides with the electron...

Andrey Abramov (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.T19: Collimation
Poster Presentation

The electron-positron Future Circular Collider (FCC-ee) foresees stored beam energies up to 20.7 MJ, a value almost two orders of magnitude higher than any previous lepton collider. Considering the intrinsic damage potential of the FCC-ee beams, a halo collimation system is under study to protect the most sensitive equipment from unavoidable losses. Beam dynamics and tracking studies are key...

Naoko Iida (High Energy Accelerator Research Organization)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

A high-charge, low-emittance injection beam is essential for SuperKEKB.  For its both rings, HER and LER, the injection efficiencies and detector backgrounds have not been good enough up to the recent run. There are many reasons for the issues. For example, serious emittance growths are observed through the beam transport lines between the injector linac and both rings. It is considered...

Yongbo Yu (University of Science and Technology of China)
5/8/23, 4:30 PM
MC2.T12: Beam Injection/Extraction and Transport
Poster Presentation

The single nonlinear kicker (NLK) injection has been adopted by several synchrotron radiation light source facil- ities or their upgrades. The injected beam receives a kick from an NLK and goes into the acceptance of the storage ring while the stored beam passes through the center of the NLK where the magnetic field is almost zero. Compared with the local-bump injection, NLK injection requires...

Gangwen Liu (University of Science and Technology of China)
5/8/23, 4:30 PM
MC2.T12: Beam Injection/Extraction and Transport
Poster Presentation

Compared to the conventional injection scheme, the three-kicker bump injection scheme with an anti-septum has two advantages. One is less requirement of dynamic aperture thanks to the thin blade of the anti-septum, the other is less installation space requirement of the injec-tion system. Both are beneficial to the beam injection for the fourth generation light sources. In this study, the...

Yun Luo (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

The Insertion Region 2 (IR2) will accommodate a Pre-Cooler at injection energy ($24~\mathrm{GeV}$) and a Strong Hadron Cooling
(SHC) facility at top energy ($100~\mathrm{GeV}$ and $275~\mathrm{GeV}$) in the Hadron Storage Ring (HSR) of the Electron-Ion Collider
(EIC). This paper summarizes the lattice update in HSR-IR2 to meet the requirements from the Pre-cooling and the SHC. The layout...

Carol Johnstone (Fermi National Accelerator Laboratory)
5/8/23, 4:30 PM
MC1.A17: High Intensity Accelerators
Poster Presentation

The proposed REDTOP experiment is a $\eta$/$\eta'$ factory aiming to explore dark matter and physics beyond the Standard Model. The $\eta$ and $\eta'$ mesons are almost unique in the particle universe because of their quantum numbers and the dynamics of their decay are strongly constrained. This effect increases the branching ratio of rare decays which can be studied to probe physics BSM. The...

Zhe Duan (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

In the future 100 km-scale Circular Electron Positron Collider (CEPC), beam polarization is an important design aspect. Transverse beam polarization for resonant depolarization is essential for precision measurements of the beam energies at Z-pol and WW threshold. Longitudinally polarized colliding beams are also beneficial for expanding the capability of the physics program. This paper...

HaoHu Li (Wuhan University)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

Wuhan Advanced Light Source (WALS) is a fourth generation diffraction limit synchrotron radiation facility, which is composed of a full energy 1.5 GeV LINAC, a 1.5 GeV Storage Ring and 10 beamlines for its phase I project. The LINAC is 6 meters lower than the storage ring, which is connected by a 46 meters beam transfer line. The beam transfer line includes three parts, one ver-tical line...

Michael Böge (Paul Scherrer Institut)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

Large initial beam position monitor (BPM) offsets have to be reduced by one order of magnitude by means of beam-based calibration (alignment) (BBA) in order to match the element-to-element magnet alignment error. At SLS 2.0 the BBA will be performed with respect to adjacent auxiliary quadrupole magnets, which are also employed for optics and tune correction. Different static and dynamic...

Anny Gora (Helmholtz-Zentrum Berlin für Materialien und Energie GmbH)
5/8/23, 4:30 PM
MC2.T12: Beam Injection/Extraction and Transport
Poster Presentation

Top-up operation at BESSY II is performed with average injection efficiencies of 98 %. However, the four-kicker bump and the septum, that form the present injection system, both contribute to a distortion of the stored beam with an amplitude of about two millimeters for several thousand turns after injection. A non-linear injection kicker (NLK) could be used to reduce the distortion due to the...

Peter Kicsiny (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

The understanding of beam-beam effects, which influence the choice of the FCC-ee design parameters for several aspects, require sophisticated and high-performance numerical simulations. The self-consistent study of the interplay of nonlinear dynamical phenomena resulting from collisions in the machine is key to accurately assess its potential performance. Although current simulation frameworks...

Fahad Alharthi (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

For the Future Circular Collider (FCC-ee), particular attention is drowned to the crucial role of the positron source. Two positron production schemes are considered for the FCC-ee: conventional and crystal-based (hybrid), implying the use of channeling radiation in the oriented crystals. To design and optimize the positron production and capture by considering the positron injector...

Giulio Scrimali (Elettra-Sincrotrone Trieste S.C.p.A.)
5/8/23, 4:30 PM
MC2.A24: Accelerators and Storage Rings, Other
Poster Presentation

To harness the major advances that have been done in the field of synchrotron light research, Elettra synchrotron radiation facility is being updated. Presently in its design phase, the Elettra 2.0 project will allow new and better research to be performed at the facility. In the upgrade of the storage ring, the new 6BA lattice brings challenges in terms of available space and radiated power....

Dr Paul Goslawski (Helmholtz-Zentrum Berlin für Materialien und Energie GmbH)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

The “Pre-Conceptual Design Report” (preCDR) of the BESSY III facility (https://doi.org/10.5442/r0004) has been finalized at the end of August 2022 and reviewed by a Project Advisory Committee beginning of September 2022. In this paper, we give a status report of the BESSY III facility project and will discuss aspects of lattice design, technical specifications, initial developments and a first...

Peter Kicsiny (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

The measurement of Bhabha scattered leptons enables a direct estimate of luminosity in lepton colliders. Currently existing Monte Carlo event generators for this process are optimized for high precision detector background simulations. From a beam dynamics point of view, emitted photons will modify the bunch distribution and lead to beam losses
due to the limited momentum acceptance of the...

Xingguang Liu (Chinese Academy of Sciences)
5/8/23, 4:30 PM
MC2.A04: Circular Accelerators
Poster Presentation

The Southern Advanced Photon Source is a diffraction-limited storage ring at middle energy. The popular injector which includes a low energy Linac and a full energy booster is proposal. The concept design of the booster is presented in the paper. The booster is a high intensity synchrotron accelerator. The impedance model is obtained and the instability threshold is predicted.

Sara Dastan (Elettra-Sincrotrone Trieste S.C.p.A.)
5/8/23, 4:30 PM
MC2.A24: Accelerators and Storage Rings, Other
Poster Presentation

Due to the reduced diameters of the vacuum chambers and of the other equipment, the performance of the next generation light sources can be greatly affected resulting in a reduction of the intensity in both single and multi-bunch operations. This is particularly important for Elettra 2.0 since there are plans to incorporate bunch compression schemes for providing very short photon pulses. In...

Takahiro Fujita (Japan Synchrotron Radiation Research Institute)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

At SPring-8, the injector was changed from the booster synchrotron to the XFEL linear accelerator. Accordingly, we have developed a new bunch cleaning system in the storage ring to ensure high bunch purities required by photon beam users since unwanted electrons were observed behind the injection bunch even after some countermeasures were taken in the injector to eliminate unwanted electrons....

Hiroshi Kaji (High Energy Accelerator Research Organization (KEK))
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

We carried out the study of the beam lifetime at SuperKEKB to investigate beam instabilities. We analyzed the injection interval for individual bunches to evaluate their beam lifetime ratio. SuperKEKB performed the top-up operation with the equalized bunches currents. This particular condition enables us to evaluate the lifetime ratio among all operation bunches. This report introduces the...

Frédéric Blanc (Amplitude Systemes)
5/8/23, 4:30 PM
MC2.T25: Lasers
Poster Presentation

Inverse Compton Scattering is a promising technique to deliver compact, high brightness and high rate sources of photons ranging from few keVs to several MeVs. Current projects either focus on producing high rates of photons thanks to high-power (up to 300kW) enhancement optical cavities and electron storage rings or on providing low bandwidth photon sources based on room-temperature linacs....

Mr Sergey Kolokolchikov (International Union of Pure and Applied Physics)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

NICA is mainly designed for experiments with heavy ions and polarized proton and deuteron beams at an energy of the former about 13 GeV. For these purposes, appropriate SPD and MPD detectors, as well as other necessary implements, are installed in the straight sections. EDM experiment supposes use deuterons at an energy of about 240 MeV. To ensure the «Quasi-Frozen Spin» mode, E+B elements...

J. Berg (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A18: Energy Recovery Linacs(ERLs)
Poster Presentation

I describe the method used for calibration the amplitudes and phases of the cavities in the Main Linac Cryomodule (MLC) for the CBETA energy recovery linac at Cornell University. The cavities are powered one at a time, and the phase of each cavity is set to a uniformly spaced set of values over a full 360 degree range, with cavity voltages set to one or more values. For each cavity, voltage,...

Kirsten Deitrick (Thomas Jefferson National Accelerator Facility)
5/8/23, 4:30 PM
MC1.A12: FFA
Poster Presentation

Extending the energy reach of CEBAF by increasing the number of recirculations, while using the existing linacs is explored. This energy upgrade is based on the multi-pass acceleration of electrons in a single non-scaling Fixed Field Alternating Gradient (FFA) beam line, using Halbach-style permanent magnets. Encouraged by the recent successful demonstration of CBETA, a proposal was formulated...

Dou Wang (Chinese Academy of Sciences)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

The CEPC is a proposed high luminosity Higgs/Z factory, with the potential to be upgraded to top factory at center-of-mass energy of 360GeV. We perform an optimization study on the circumference of CEPC. We calculate the instant luminosity, the construction and operation cost for different circumferences. With respect to the total cost and average cost per particle, we conclude that the...

Dou Wang (Chinese Academy of Sciences)
5/8/23, 4:30 PM
MC1.A10: Damping Rings
Poster Presentation

A damping ring system which includes a small 1.1 GeV ring and two transport lines is introduced in CEPC linac in order to reduce the transverse emittance of positron beam at the end of linac and hence reduce the beam loss in the booster. The repetition rate of Linac is 100 Hz and one-bunch-per-pulse is considered. The double-bunch scheme of Linac is only considered for the high luminosity mode...

Felix Carlier (Ecole Polytechnique Fédérale de Lausanne)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

The future upgrade to the High-Luminosity Large Hadron Collider (HL-LHC) will impose tight tolerances on IP optics measurements. k-modulation is currently the preferred method in the LHC for IP optics measurements and will play a critical role in the HL-LHC. As such, Run 3 of the LHC provides an ideal test-bench for addressing challenges in k-modulation. In the first commissioning year of Run...

J. Berg (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A18: Energy Recovery Linacs(ERLs)
Poster Presentation

I describe a method for finding a set of cavity voltages and phases for the CBETA multi-pass energy recovery linac. The beam in CBETA makes up to 8 passes through its 6 cavity linac. The voltage and phase for each cavity can be set individually, and the path length for each arc energy can be set as well. I show that solutions can be found where each cavity has energy gains and losses balanced...

Yun Luo (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

The Electron-Ion Collider (EIC) uses the local crab crossing scheme to compensate the geometric luminosity loss of the $25 ~\mathrm{mrad}$
crossing angle in the interaction point. Due to space limitations and other optics constraints, the beam optics at the crab cavities in
the Hadron Storage Ring (HSR) is not perfectly matched to fully compensate the crab dispersion.
This paper...

Yu Xin Zhang (Wuhan University)
5/8/23, 4:30 PM
MC2.A24: Accelerators and Storage Rings, Other
Poster Presentation

The fourth generation of synchrotron radiation sources will be constructed in Wuhan. The RF system of the storage ring provides 600kV voltage to the beam through a 500MHz normal conducting cavity. A coaxial coupler is designed for the 500 MHz cavity to input 150kW power. The coupler was modified from KEK-B. We use a high-power ceramic disk window design and under over cut window structure....

Carlo Emilio Montanari (Bologna University)
5/8/23, 4:30 PM
MC1.T19: Collimation
Poster Presentation

The High Luminosity upgrade of the CERN Large Hadron Collider (HL-LHC) aims to achieve stored beam energies of 680 MJ. One possible limit to the achievable intensity is the quench limit of the superconducting magnets downstream of the betatron collimation insertion. At HL-LHC beam intensities, even a tiny amount of particles leaking out of the collimation system may be sufficient to quench...

Andrey Abramov (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.T19: Collimation
Poster Presentation

For the Future Circular Collider (FCC) Conceptual Design Report (CDR), the FCC-hh collimation system was studied and optimized for proton and heavy-ion operation with up to 8.3 GJ stored beam energy. There are currently studies ongoing for an updated design baseline, including a new ring layout, compatible with the FCC-ee, and optics, where the collimation insertions have undergone major...

Massimo Giovannozzi (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

Magnetic fields in the 12-16 T range are needed to bend the beams in future hadron colliders, such as the CERN FCC-hh. For these magnets, made with Nb3Sn superconducting cable, a small reduction of the field brings a non-negligible reduction of cost and complexity. Increasing the dipole filling factor is hence a priority to provide higher energies for the same magnetic fields - or the same...

Mohamed El Khaldi (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
5/8/23, 4:30 PM
MC2.A24: Accelerators and Storage Rings, Other
Poster Presentation

The RF system of the ThomX storage ring consists in a 500 MHz single cell copper cavity of the ELETTRA type, powered with a 50 kW CW solid state amplifier, and its associated Low-Level RF feedback and control loops. The low operating energy of 50 MeV makes the impedances of the cavity higher order modes (HOMs) particularly critical for the beam stability. Their parasitic effects on the beam...

Viacheslav Kubytskyi (Université Paris-Saclay, CNRS/IN2P3, IJCLab), Iryna Chaikovska (Université Paris-Saclay, CNRS/IN2P3, IJCLab), Nicolas Delerue (Université Paris-Saclay, CNRS/IN2P3, IJCLab), Viktor Mytrochenko (National Science Centre)
5/8/23, 4:30 PM
MC2.A24: Accelerators and Storage Rings, Other
Poster Presentation

We will report on the ongoing ThomX ring commissioning, its status, its main challenges, our results and our planning.

ThomX is a compact Compton-based X-ray source under commissioning at IJCLab in Orsay (France). This facility is composed of a 50-70 MeV linac, a transfer line and a storage ring whose closed orbit is 18 m long. Compton scattering between the 50 MeV electron bunch of 1 nC...

Simone Liuzzo (European Synchrotron Radiation Facility)
5/8/23, 4:30 PM
MC2.A04: Circular Accelerators
Poster Presentation

Storage ring commissioning-like simulations are necessary to assess the feasibility of proposed future lattice designs. This paper proposes a python package for commissioning-like simulations based on python accelerator toolbox (pyAT). The software includes: 1) errors definition, 2) correction routines from open trajectory to optics and coupling correction and 3) the evaluation of the relevant...

Massimo Giovannozzi (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.T19: Collimation
Poster Presentation

Hollow electron lenses (HELs) could be used in the HL-LHC to selectively remove halo particles from the circulating beams. While the ideal design should leave particles in the beam core unaffected, in reality, the core particles will be exposed to a small residual kick that could induce transverse emittance blowup if not properly compensated while the HEL is operated in pulsed mode. One...

Bernd Stechauner (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A09: Muon Accelerators and Neutrino Factories
Poster Presentation

The interaction of particle beams with materials is important for muon colliders, as it causes particle scattering, energy loss and energy-straggling processes. Such interactions are also relevant in high-precision applications such as radiation oncology treatment planning, where the beam travels through air before reaching the patient, and are also the crucial mechanism for ionization cooling...

Guimei Wang (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

Modern synchrotron light sources are competing intensively to increase X-ray brightness and, eventually, approach the diffraction limit, which sets the final goal of lattice emittance. Recently, we propose a new optics solution aimed at reaching low emittance, using a lattice element “Complex Bend”. The Complex Bend is a sequence of dipole poles interleaved with strong alternate focusing so as...

An Li (Tsinghua University in Beijing), Weihang Gu (Tsinghua University in Beijing)
5/8/23, 4:30 PM
MC1.A16: Advanced Concepts
Poster Presentation

We presented a novel concept of longitudinal bunch train compression capable of manipulating relativistic electron beam in range of hundreds of meters. It has potential to compress electron beam with high ratio, and raise its power to ultrahigh level within compressed duration of nanoseconds. Electron’s spiral motion in uniform magnetic field is utilized to fold the hundreds of meters long...

Florian Stummer (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A25: Beyond Colliders
Poster Presentation

The SHADOWS experiment is a proposed beam dump experiment in the CERN North Area, aiming to search for feebly interacting particles (FIPs) created in 400 GeV/c proton interactions. Due to its intended off-axis location alongside the K12 beam line, the SHADOWS detector can be placed potentially very close to the dump, enabling it to look for FIPs in non-covered parts of the parameter space. To...

Sonia Bartolome-Jimenez (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

The Configuration Management of the LHC and its injectors ensures a clear and coherent representation of the CERN accelerators at a given point in time. It has been evolving steadily. The methodology has been continuously improved, incorporating best practices and was also extended to the injectors to face the Long Shutdown 2 (LS2) with a set of rigorous and homogenised processes for the...

Ozgur Etisken (Kirikkale University), Pantaleo Raimondi (European Synchrotron Radiation Facility)
5/8/23, 4:30 PM
MC1.A10: Damping Rings
Poster Presentation

The current injector complex design of the FCC-e+e− project consists of e+/e− linacs, which accelerate the beams up to 6 GeV, a damping ring at 1.54 GeV, a pre-booster ring, accelerating the beam up to 16 GeV and a booster synchrotron ring integrated in the collider tunnel accelerating the beams up to the collision energies. The purpose of the damping ring is to accept the 1.54 GeV beam coming...

Chikaori Mitsuda (High Energy Accelerator Research Organization)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

Commissioning a test beamline in KEK Photon Factory Advanced Ring (PF-AR, 6.5GeV and 5.0GeV) is proceeded under cooperation with the KEK Institute for Particle and Nuclear Studies (IPNS) to use electron beams in the GeV-range for the development of detectors in particle physics experiments. The inauguration of the project which was mainly directed by the IPNS was launched back in 2014, but the...

qiuyu zhang (University of Science and Technology of China)
5/8/23, 4:30 PM
MC1.T19: Collimation
Poster Presentation

Coordinate conversion is used in many aspects, such as laser tracker transfer problem, the conversion between WGS84 coordinate system and local coordinate system and so on. The high precision of coordinate conversion model is beneficial to improve the accuracy index of the network. The dual quaternion can integrate rotation and translation, which effectively simplifies the complexity of the...

Raul Costa (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A03: Linear Lepton Colliders
Poster Presentation

In this paper we present the first results of full 6D multi-bunch tracking through the new Drive-Beam decelerator lattice for the first-stage of the Compact Linear Collider (CLIC). Using the new PLACET3 tracking code, we evaluate the coupling between transverse and longitudinal dynamics in the lattice finding an indirect impact of the Drive-Beam's transverse emittance in the Main-Beam performance.

Geetanjali Sharma (Diamond Light Source Ltd)
5/8/23, 4:30 PM
MC2.T15: Undulators and Wigglers
Poster Presentation

Over the last three years (2020-2022) Diamond Light Source has installed four in-house designed, built, and measured Cryogenic Permanent Magnet Undulators (CPMUs). All four are 2 m long with a 17.6 mm period and have a minimum operating gap of 4 mm. These have replaced existing 2 m long in-vacuum pure permanent magnet (PPM) devices to improve the flux to several of Diamond’s MX (Macromolecular...

Daniele Mirarchi (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.T19: Collimation
Poster Presentation

Crystal collimation is studied to improve the collimation efficiency with ion beams at the High-Luminosity Large Hadron Collider (HL-LHC). Bent crystals are used instead of conventional primary collimators to deflect high-energy halo particles at angles orders of magnitude larger than what can be achieved with scattering by conventional materials. Following the promising results obtained...

Antonio De Santis (Istituto Nazionale di Fisica Nucleare)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

DAFNE, the Frascati electron-positron collider, based on the Crab-Waist collision scheme, has successfully completed the preliminary phase with the SIDDHARTA-2 detector aimed at testing and optimizing the performances of the machine and the experimental apparatus.
In this configuration the collider has delivered to the experiment, using gaseous 4He targets, a data sample suitable to perform...

Simone Spampinati (Elettra-Sincrotrone Trieste S.C.p.A.)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

The Future Circular Collider project is built around two main pillars: the construction of 100 km lepton collider running at increasing energies from the Z-pole to the t-tbar threshold (FCC-ee) followed by a hadron collider in the same tunnel (FCC-hh) to explore unprecedented energy frontier.
The realization of FCC-ee relies on a very challenging injector complex that should provide the...

Frank Zimmermann (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A25: Beyond Colliders
Poster Presentation

We discuss the beam requirements for indirect searches of dark matter and feebly coupled particles using advanced accelerator concepts. A parameter comparison reveals dielectric laser acceleration as a promising candidate for delivering the needed single-electron beams in the 5-100 GeV energy range or beyond. We suggest a parameter set for a baseline DLA-based dark sector accelerator....

Barbara Dalena (Commissariat à l'Energie Atomique et aux Energies Alternatives)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

After the discovery of the Higgs boson at the LHC, particle physics community is exploring and proposing next accelerators, to address the remaining open questions on the underlying mechanisms and constituents of the present universe. One of the studied possibilities is FCC (Future Circular Collider), a 100-km-long collider at CERN. The feasibility study of this future proposed accelerator...

Amy Sy (Thomas Jefferson National Accelerator Facility)
5/8/23, 4:30 PM
MC2.T12: Beam Injection/Extraction and Transport
Poster Presentation

A degrader device is being built at the CEBAF injector to degrade the electron beam phase space for machine acceptance studies. The electron beam is degraded through multiple scattering in a thin target before further transport in the injector beamline for injection into CEBAF. The degraded electron beam will approximate phase space distributions expected from a bremsstrahlung-based polarized...

Christopher Izzo (Fermi National Accelerator Laboratory)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

Within the Standard Model the electric dipole moment (EDM) of the muon is heavily suppressed. Observation of a non-zero EDM value would be an additional source of CP violation that would aid in answering the many open questions about the universe and the Standard Model. As part of an investigation into the feasibility of measuring the muon EDM at the g-2 storage ring at Fermilab, a study on...

Pablo Andreas Arrutia Sota (Oxford University)
5/8/23, 4:30 PM
MC2.T12: Beam Injection/Extraction and Transport
Poster Presentation

The main SPS users are the experiments installed in North
experimental Area (NA) which are served with a continuous 4.8 s long
spill of protons and heavy ions. A third-integer resonant slow extraction is used to provide a uniform, long spill. Such a technique
comes at the cost of particles directly hitting the electrostatic septum
wires and activating the surrounding of the extraction...

Ryota Matsushita (The University of Tokyo)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

In the J-PARC Muon g-2/EDM experiment, to measure muon g-2 and EDM, it is necessary to accumulate 300 MeV/c muon beams with a 66 cm diameter region with a 3 T solenoid-type magnetic field. A new three-dimensional spiral injection scheme has been invented to achieve this target. Since this is the first instance to employ this injection scheme, a scale-down experiment with an electron beam of...

Reza Valizadeh (Science and Technology Facilities Council)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

Nb3Sn, NbTiN and NbN are superconductors with a critical temperatures of 18.3, 12.6-17, 11.6-17.5 K, respectively, that are higher than that of Nb (9.3 K). Hence, at 4 K they have an RF resistance of an order of magni-tude lower than that of Nb, which leads to quality factors above those of Nb. In recent years, there has been an extensive effort converting Nb cavities into Nb3Sn by alloying...

Paolo Meliga (Centro Nazionale di Adroterapia Oncologica)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

CNAO is one the six hadrontherapy centers all around the world that produce
both proton and carbon
ions beams.
It is based on a synchrotron in which the beams are extracted by a slow extraction mechanism that uses a betatron core.
In the last years an electrostatic exciter has been installed along the ring in order to allow
beam extraction using the RF-KO method.
The system has been...

John Moss (Oak Ridge National Laboratory)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

The Spallation Neutron Source (SNS) employs six cavities in the Drift Tube Linac (DTL) section to accelerate the H- ion beam to 87MeV. Each cavity is energized by a 2.5MW peak power klystron at 402.5MHz using rapid tapered waveguide iris couplers. All six original iris couplers have been in operation without replacement for over two decades. The increased RF power demands of the Proton Power...

Ming-Chyuan Lin (National Synchrotron Radiation Research Center)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

A test station for the THALES 300kW transmitter PSM has been successfully constructed in NSRRC. Integrating the modules of power supply, control interface, interlock protection, and accessories into a single rack simplifies the examination procedure and makes signal observation easier. The layout and hardware realization of this test station, as well as important considerations and proper...

Ursula van Rienen (Rostock University)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

The Future Circular electron-positron Collider (FCC-ee) is planned to operate with beam energies from 45.6 to 182.5 GeV and beam currents from 5 to 1400 mA. This will enable precision physics at the four operational points, Z, W and Higgs boson and the top and anti-top quarks. This work will focus on the RF structure design for the ttbar operation point to reach a beam energy and current of...

Christopher Mayes (SLAC National Accelerator Laboratory)
5/8/23, 4:30 PM
MC1.A18: Energy Recovery Linacs(ERLs)
Poster Presentation

**The baseline scheme for hadron beam cooling in the Electron Ion Collider (EIC) calls for Coherent electron Cooling (CeC) of the hadrons with non-magnetized electrons at high energy (150 MeV electrons), and additional cooling via conventional bunched beam cooling using a precooler system. The electron beam parameters for these concepts are at or beyond the current state of the art, with...

Chuyu Liu (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

In the Electron Ion Collider (EIC), to be built at Brookhaven National Lab, the beams collide with a crossing angle of 25 mrad and an aspect ratio of 12 to 1. The orbit control in the interaction region is critical to achieve and to maintain the design luminosity and polarization, and to control synchrotron radiation induced detector background. In his report, the authors will introduce the IR...

Piotr Tracz ("Horia Hulubei" National Institute for R&D in Physics and Nuclear Engineering)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

High brightness beams are desired for application to Inverse Compton Scattering (ICS) systems for generation of high-quality x- and γ-rays. It opens new opportunities for nuclear physics research in fields such as nuclear photonics, nuclear astrophysics, photo-fission, production of exotic nuclei, applications in medicine, industry and space science. In ICS mechanism high energy electron is...

Yu Tang (Institute of Modern Physics, Chinese Academy of Sciences)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

LEAF (Low Energy heavy ion Accelerator Facility) is a low-energy high-intensity heavy-ion LINAC complex for multidiscipline research. At present, the beam repetition rate is the same as the LINAC frequency of 81.25 MHz. A lower frequency would be desirable for many types of experiments employing time of flight data acquisitions. A method of increasing the bunch spacing to 98 ns by combining a...

Xingguang Liu (Chinese Academy of Sciences), Yanliang Han (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

The Southern Advanced Photon Source (SAPS) is a 4th generation storage ring based light source under design started several years ago, which is planned to be constructed
at Guangdong province at China. The equilibrium emittance of the storage ring will be below 100 pm.rad and the beam energy is determined to be 3.5 GeV. During the past two years, the nominal current of the storage ring was...

Yao Yang (Institute of Modern Physics, Chinese Academy of Sciences)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

We propose to develop a compact superconducting cyclotron to accelerate H2+ ions for isotope production since using H2+ allows the use of a stripper foil after extraction from the cyclotron to remove the binding electron, thereby doubling the electrical beam current. An RFQ, partially embedded in the cyclotron yoke, will be used to bunch and axially inject the H2+ beam into the cyclotron’s...

Tao Liu (University of Science and Technology of China)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

Super Tau Charm Facility (STCF) proposed in China, is a future electron-positron collider project with symmetric double ring. It’s designed to be operated in the center of mass energy (CME) range between 2 GeV and 7 GeV. The goal luminosity is beyond $0.5\times 10^{35} cm^{-2} s^{-1}$. Hybrid multi-bend-achromat (HMBA) concept, proposed to develop low emittance lattices with large dynamic...

Vittorio Bencini (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

The Super Proton Synchrotron (SPS) injection system plays a fundamental role to preserve the quality of injected high-brightness beams for the Large Hadron Collider (LHC) physics program and to maintain the maximum storable intensity. The present system is the result of years of upgrades and patches of a system not conceived for such intensities and beam qualities. In this study, we propose...

Shaoxiang Dong (University of Science and Technology of China)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

As compared to traditional magnets, permanent magnets can effectively reduce energy consumption and eliminate the impact of current ripple and the wa-ter cooling system on beam current. The use of perma-nent magnets in accelerators has become a new trend as permanent magnet technology has advanced. In HALF, we have designed a permanent magnet based on the quadrupole magnet, and the central...

Mr Zhandong Zhang (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

A S band high power klystron for BEPCII operating at frequency of 2856 MHz has been designed and simulated at Institute of High Energy Physics, Chinese Academy of Sciences. A thermionic electron gun have been designed. A beam current of 379 A is obtained at operating voltage of 325 kV with cathode current density of 6.6 A/cm2. Then, the full 3-dimensional particle-in-cell simulation of the...

Qingzhu Li (Tsinghua University in Beijing)
5/8/23, 4:30 PM
MC2.A08: Linear Accelerators
Poster Presentation

High power input often leads to frequency deviation that cannot meet the high-precision frequency control requirements of keV Ultrafast Electron Diffraction (UED) compression cavities. In this paper, we propose new solu-tions for reducing heat generation and frequency devia-tion based on modifications to the cavity design and power input method, building upon the design of the orig-inal...

Enrico Manosperti (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

The Compact Linear Collider (CLIC) is a proposed linear accelerator designed to collide electrons and positrons at energies up to 3 TeV. In order to explore new physics and to be more competitive with other collider projects, CLIC is exploring the increase of the center-of-mass energy to 7 TeV. The CLIC Beam Delivery System (BDS) transports the lepton beams from the exit of the Main Linac to...

Vittorio Bencini (CERN)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

The Advanced Wakefield Experiment (AWAKE) has demonstrated during its first run (Run1, concluded in 2018) the capability of accelerating electrons up to the energy of 2 GeV using proton driven plasma wakefield acceleration.
AWAKE Run 2 has started and during the third phase of the program, Run 2c, which aims to demonstrate stable accelerating gradients of 0.5-1 GV/m and emittance...

Kai Tian (SLAC National Accelerator Laboratory)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

With the growing interests and new experimental development in time-resolved studies at Stanford Synchrotron Radiation Light Source (SSRL), we are motivated to develop the Pseudo Single Bunch (PSB) operational mode to address the requirements from time-resolved and regular user experiments simultaneously. In this paper, we will present the physics design for this new mode. Beam line...

Xiaoyu Liu (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

The High Energy Photon Source is a 6 GeV synchrotron radiation light source being built in Beijing, China. The electron beam inside the storage ring is designed to run with ultra-low emittance. To ensure high beam quality, the coupled bunch instabilities must be carefully investigated and controlled, therefore an effective feedback system is essential. Stripline kickers are designed for...

Andrea Pisent (Istituto Nazionale di Fisica Nucleare)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

A Boron Neutron Capture Therapy facility requires a high flux of neutrons (approx. 10^9 thermal or epithermal n/s*cm^2) with low contamination content (gamma and off energy neutrons). The core of such a facility is a low energy high intensity proton linac, coupled with a high power beryllium neutron production target, followed by a proper Beam Shaping System. In this paper we shall discuss...

Qing Luo (University of Science and Technology of China)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

Based on the key scientific questions in the frontier of particle physics field, the current status and future development trend globally and domestically of accelerator-based particle physics experiments, a Super Tau-Charm Facility (STCF) is proposed by taking into account the advantages in the relevant fields in China. The STCF is a new-generation electron-positron collider facility that has...

Dr Bong Hyuk Choi (Pohang Accelerator Laboratory)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

A new fourth-generation synchrotron radiation source(4GSR) will be built in Ochang, South Korea by 2027. A technical design review for the Korea 4GSR is currently in progress and is expected to be completed in mid-2023.
The storage ring has a circumference of 800 m. It has been designed for a maximum current of 400 mA at 4 GeV electron beam energy. A target emittance is 58 pm-rad, 100 times...

Vadim Ptitsyn (Brookhaven National Laboratory (BNL))
5/8/23, 4:30 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

The Electron-Ion Collider is gearing up for "Critical Decision 2", the
project baseline with defined scope, cost and schedule.
Lattice designs are being
finalized, and preliminary component design is being carried out. Beam dynamics
studies such as dynamic aperture optimization, instability and polarization
studies, and beam-beam simulations are continuing in parallel. We report on
the...

Matthew Capstick (Oxford University)
5/8/23, 4:30 PM
MC1.A03: Linear Lepton Colliders
Poster Presentation

In order to produce a high luminosity at the interaction point, the Compact Linear Collider (CLIC) accelerators must preserve low emittance beams along both the main 22km linacs. A key factor in preserving a low emittance beam is the mechanical alignment and stability of the accelerator components.

The CLIC accelerators are divided into `Two Beam Modules’ (TBMs) which integrate a section of...

Ryan Bodenstein (Thomas Jefferson National Accelerator Facility)
5/8/23, 4:30 PM
MC1.A12: FFA
Poster Presentation

The FFA@CEBAF energy upgrade study aims to approximately double the final energy of the electron beam at the Continuous Electron Beam Accelerator Facility (CEBAF). It will do this by replacing the highest-energy recirculating arcs with fixed-field alternating gradient (FFA) arcs, allowing for several more passes to circulate through the machine. This upgrade necessitates the re-design of the...

Luc Perrot (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
5/8/23, 4:30 PM
MC1.A17: High Intensity Accelerators
Poster Presentation

MYRRHA will be a research infrastructure focussed on the construction of a first prototype of an accelerator driven sub-critical nuclear reactor (ADS). The driver ac-celerator will deliver a 600 MeV, 4 mA Proton beam to the reactor core. The first phase called MINERVA aims for the construction of a 100 MeV, 4 mA proton linear accel-erator with a focus on reliability. Attached to this 100 MeV...

Erik Wallén (Lawrence Berkeley National Laboratory)
5/8/23, 4:30 PM
MC2.T15: Undulators and Wigglers
Poster Presentation

The Advanced Light Source (ALS) at the Lawrence Berkeley National Laboratory (LBL) is going through an upgrade (ALS-U), where the ALS triple-bend achromat is replaced by a nine-bend achromat storage ring (SR) with on-axis injection using beam swapping from a triple-bend achromat accumulator ring (AR). The small beam size at the straight sections of the ALS-U has opened the possibility to use...

Quentin Demassieux (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A25: Beyond Colliders
Poster Presentation

Manipulating high energy beams with bent crystals has applications ranging from beam collimation to slow or direct beam extraction. These systems are now integrated parts of accelerators and studied for future experimental set-ups.
With growing achievements and expectations of crystal beam manipulation, requirements for the devices that operate the crystals become more stringent. They must...

Joshua Appleby (Diamond Light Source Ltd)
5/8/23, 4:30 PM
MC2.A04: Circular Accelerators
Poster Presentation

Beam-based alignment (BBA) is a standard tool at accelerators for aligning particle beams to the centre of quadrupole magnets. Traditional BBA measurements have been slow, potentially taking many hours for a whole machine. We have developed a tool, based on results previously reported at the ALBA synchrotron, that uses fast excitation of magnets to greatly speed up measurements. We show...

Wenqing Zhang (Chinese Academy of Sciences)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

Southern Advanced Photon Source (SAPS) is a 3.5GeV fourth-generation storage ring light source, considered to construction in Guangdong province of china, adjacent to the China Spallation Neutron Source(CSNS). Its natural emittance of the beam is close to the diffraction limit. Since the dynamic aperture of SAPS is far smaller than the physical aperture in the low emittance storage ring,...

Simon Karau (Deutsches Elektronen-Synchrotron)
5/8/23, 4:30 PM
MC2.A24: Accelerators and Storage Rings, Other
Poster Presentation

The PETRA IV storage ring currently under development at DESY will require a third harmonic 1.5 GHz RF-system to prevent negative effects on both, lifetime and emittance, caused by Touschek effect and Intrabeam scattering. These cavities lengthen the bunches and thereby reduce their charge density.
For this 3rd harmonic system, a one-cell single-mode cavity with a simple mechanical and...

Yuka Ibaraki (Nagoya University)
5/8/23, 4:30 PM
MC1.A09: Muon Accelerators and Neutrino Factories
Poster Presentation

The muon-dedicated linear accelerator is being developed for the muon g-2/EDM experiment at J-PARC. To suppress the decay loss during acceleration, the alternative phase focusing (APF) method inter-digital H-mode drift tube linac (IH-DTL) is adopted in the low-velocity region following a radio-frequency quadrupole linac (RFQ). We are planning to accelerate muons in 2024 using the RFQ and the...

Emil Traykov (Institut Pluridisciplinaire Hubert Curien)
5/8/23, 4:30 PM
MC1.A17: High Intensity Accelerators
Poster Presentation

MINERVA (MYRRHA phase 1) aims at demonstrating the requirements related to the reliability and the fault tolerances of the MYRRHA accelerator-driven system (ADS) by the realization of a superconducting linac for 100 MeV/4 mA proton beams. The design and the performance of the Medium Energy Beam Transfer section (referred to as MEBT-3) of the accelerator are critical for reaching the goals of...

Yue Hao (Brookhaven National Laboratory), Yun Luo (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

The Electron-Ion Collider (EIC) presently under construction at Brookhaven National Laboratory will collide polarized high energy electron beams with hadron beams with luminosities up to 10^34cm^{-2}s^{-1} in the center mass energy range of 20-140 GeV. Besides high luminosity and high polarization, it is also recommended for the EIC design to incorporate a possible second interaction region...

J. Berg (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

The Electron-Ion Collider (EIC) will be constructed at Brookhaven National Laboratory with the goal of providing high luminosity, high average beam polarization, and a wide range of colliding beam energies. One critical requirement is a large dynamic aperture (DA) of the collider rings, in both transverse and momentum dimensions. The ring lattices have been continually optimized to improve the...

Edgar Cristopher Cortés García (Deutsches Elektronen-Synchrotron)
5/8/23, 4:30 PM
MC2.T12: Beam Injection/Extraction and Transport
Poster Presentation

The PETRA IV project will have a storage ring with an ultra-low natural emittance of 20 pm rad [1]. For an off-axis injection scheme with working points at the difference resonance it is important to assure the vertical excursion arising due to transversal coupling such, that injection efficiency is not compromised. In this contribution we present simulations results of an off-axis injection...

Hiroshi Yamaoka (High Energy Accelerator Research Organization (KEK))
5/8/23, 4:30 PM
MC1.A26: Machine Detector Interface
Poster Presentation

We frequently experience earthquakes in Japan. Even though countermeasures against earthquake is deeply considered and well carried out, sometime troubles are occurred on facilities or experimental devices. When we focus on the relative displacement due to an earthquake, it is possible to cause damage of a beam pipe bellows or interference by disappearing tolerance between the sub-detectors....

Yun Luo (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

Proton bunches will collide with electron bunches in the Electron-Ion Collider (EIC) to produce a luminosity of up to $10^{34}~\mathrm{cm}^{-2}\mathrm{s}^{-1}$. Various sources can lead to electron orbit ripple at the interaction point (IP). This ripple will cause emittance growth of the proton beam via beam-beam interaction. This paper presents weak-strong simulations for the case where a...

Vanessa Grattoni (European XFEL GmbH)
5/8/23, 4:30 PM
MC2.T15: Undulators and Wigglers
Poster Presentation

The FEL performance strongly correlates with the undulator field quality. The definition of mechanical tolerances for the undulator magnets allows us to achieve the wished field quality. These mechanical tolerances should be defined both on short and long-range errors. With long-range errors, we address problems like deformations of the yoke caused by the support structures or unwanted...

Qiong Wu (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

The Electron Ion Collider is adopting a crabbing scheme of 25 mrad crossing angle. The local crab cavity system designed to kick the bunches in the first interaction region (IR) also introduces higher order multipoles com-ponents in electric field which affect the dynamic aperture. We have studied the strength of each multipole up to n = 4, or octupole, with respect to the main dipole field in...

Siddhanth Shishodia (Lovely Professional University)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

A scheme for electron acceleration by self focused -Gaussian laser pulses in under dense plasma has been presented. The relativistic increase in the mass of plasma electrons gives nonlinear response of plasma to the incident laser pulse resulting in its self focusing. Under the combined effects of saturation nature of relativistic nonlinearity of plasma, self focusing and diffraction...

Matthew Signorelli (Cornell University (CLASSE))
5/8/23, 4:30 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

Polarization levels in the Electron Storage Ring (ESR) of the Electron-Ion Collider (EIC) must be maintained for a sufficient time before depolarized bunches are replaced. The depolarizing effects of synchrotron radiation can be minimized with spin matching, however the optics requirements for the ring must still be satisfied. Furthermore, the robustness of the polarization in the presence of...

Matthieu Valette (Brookhaven National Laboratory)
5/8/23, 4:30 PM
MC1.A19: Electron-Hadron Colliders
Poster Presentation

The EIC electron beam parameters will feature 320 kJ stored kinetic energy and beam sizes leading to the melting of most metals in case of normal impact of a single bunch. In order to protect the aperture, focusing magnets and experimental detectors from beam losses and backgrounds a dedicated collimation system will be included in IR2 and IR4. Additionally, to protect against accidental...

Ruediger Schmidt (Technische Universitaet Darmstadt)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

Dust particles interacting with the proton beams have caused many thousand beam-loss events at CERN's Large Hadron Collider (LHC), some of which led to premature beam dumps and even magnet quenches. It has been hypothesized that dust particles on the vacuum chamber wall of the LHC are negatively charged due to electron clouds and can detach from the chamber wall by the electric field of the...

Giovanni Simonetti (Elettra-Sincrotrone Trieste S.C.p.A.)
5/8/23, 4:30 PM
MC2.A24: Accelerators and Storage Rings, Other
Poster Presentation

Elettra will be upgraded between 2025 and 2026 and the storage ring lattice will be totally different to enhance the emittance and improve the coherence of the machine.
The storage ring design requires a stiff support system to reduce the impact of vibrations on the electron orbits, a high thermal stability as well as low static deformations. The magnets support system must be easy to...

Roberto Visintini (Elettra-Sincrotrone Trieste S.C.p.A.)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

Elettra 2.0 is the name of the upgrade project of the existing Elettra Storage Ring (SR) and its ancillary systems. The project comprises also new beamlines (BLs) and the re-allocation of some of the currently operational ones.
Consequently, the “Experimental Hall” (EH) of Elettra, i.e. where the beamlines are installed, is another working area with activities that have started well before...

Edoardo Farina (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

The LHC beam dump system has the task of safely and reliably disposing of the extracted beams from 450 GeV to 7 TeV. The present dump assembly consists of a multi-segment graphite core, which is contained in a duplex stainless steel vessel with titanium windows. To reduce the energy deposition density in the core and windows, the extracted beams are swept across the dump front face with...

Bin Wang (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

Circular Electron-Positron Collider (CEPC) is a 100 km circumference double-ring Collider, the high luminosity lattice in CEPC TDR is half lower emittance compared with the lattice in CEPC CDR. The dynamic aperture is strongly sensitive to the magnet misalignments and field errors. We present the study of the error correction for the CEPC TDR lattice and the dynamic aperture tracking after...

Manuela Boscolo (Istituto Nazionale di Fisica Nucleare)
5/8/23, 4:30 PM
MC1.A26: Machine Detector Interface
Poster Presentation

We discuss the beam power loss related to the heating of the beam pipe walls of the FCC-ee interaction region. We analyse the excitation of trapped modes, which can accumulate electromagnetic energy and determine the locations of these modes. We study the unavoidable resistive-wall wake field, which is responsible for the direct beam pipe walls heating. We show the distribution of the heat...

Giorgio Apollinari (Fermi National Accelerator Laboratory)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

The Interaction Regions (IR) of many colliders benefit from the application of leading-edge technologies to ensure the highest possible luminosity delivered to the experiments. Leading-edge low-beta focusing magnets and crab cavities to handle individual bunches are critically important to increase the instantaneous and integrated luminosity in future Colliders.
The High-Luminosity LHC...

Jinliu Su (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC1.A24: Accelerators and Storage Rings, Other
Poster Presentation

The BEPCII has already realized the collision luminosity target of $1.0\times10^{33}cm^{-2}s^{-1}$ in April 2016. However, in the past six years of practical operation, the collision luminosity usually remains between $6.0\times10^{32}cm^{-2}s^{-1}$ and $8.5\times10^{32}cm^{-2}s^{-1}$. In the operation with high beam current, the BEPCⅡ displayed serious beam instabilities, which greatly limits...

CRISTOBAL GARCIA JAIMES (European Organization for Nuclear Research), Rogelio Tomas (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

The FCC-ee project takes a step forward towards the discovery of new physical phenomena beyond the frontier of the standard model, by aiming at unprecedented center of mass energies and luminosities in a double-ring lepton collider. In order to explore potential improvements to the current lattice design, this paper looks at the use of combined function magnets within the short straight...

Arnold Kruschinski (Helmholtz-Zentrum Berlin)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

Steady-state microbunching (SSMB) is envisioned to enable the generation of high-power coherent synchrotron radiation at an electron storage ring for wavelengths up to the extreme ultraviolet. The underlying mechanism has been shown to be viable in a proof-of-principle (PoP) experiment at the Metrology Light Source (MLS) in Berlin*.
An enhanced detection scheme allows systematic studies of...

Bianca Veglia (Deutsches Elektronen-Synchrotron)
5/8/23, 4:30 PM
MC2.A04: Circular Accelerators
Poster Presentation

A new collaboration between ESRF and DESY within the EURIZON project is aiming at building tools and concepts that can be used for the next generation light sources. The developed tools will be applied to the ESRF-EBS and the PETRA IV lattice models to validate concepts to improve the injection efficiency or the lifetime of storage rings.
In this project framework, the bounded Extremum...

Jonas Kallestrup (Paul Scherrer Institut)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

Sharing of emittances between transverse planes has potential benefits in storage ring light sources. The larger vertical emittance significantly increases the Touschek lifetime, while the smaller horizontal emittance helps to mitigate the loss in brightness at high photon energies due to the larger vertical beam size and divergence. A fully coupled beam is considered as an optional operation...

Xiaohao Cui (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC2.A04: Circular Accelerators
Poster Presentation

To improve the performance of beam orbit correction, it is necessary to perform beam-based alignment in modern storage ring light sources. For the High Energy Photon Source (HEPS), a 4th generation storage ring light source being built in China, because of the large number of BPMs in storage ring, it may take dozens of hours to complete the alignment with a conventional BBA algorithm. To...

Christopher Izzo (Fermi National Accelerator Laboratory)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

The Fermilab Muon Campus, repurposed Tevatron-era Antiproton Source facilities, is currently the home to the g-2 and Mu2e muon experiments. Collecting data since 2017, the g-2 experiment is wrapping up a final run before the Muon Campus transitions to Mu2e operation. Currently in the commissioning process, the Mu2e experiment is expected to begin calibration and data collection in fiscal year...

Takashi Mori (High Energy Accelerator Research Organization)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

The SuperKEKB accelerator, a collider consisting of 7 GeV electron and 4 GeV positron rings, is ongoing in order to supply a great number of interaction events of electrons and positrons to the Belle II detector which explores the new physics beyond the standard model.
The important milestone is to obtain integrated luminosity of 15 /ab in the next decade,
so that the luminosity should...

Carmelo Barbagallo (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
5/8/23, 4:30 PM
MC1.A18: Energy Recovery Linacs(ERLs)
Poster Presentation

The PERLE (Powerful Energy Recovery Linac for Experiments) project relies on superconducting RF (SRF) cavities to reach its goals. The installation of coaxial couplers on the cutoff tubes of SRF cavities is foreseen for damping cavity’s Higher Order Modes (HOMs). The prototyping and fabrication of 3D-printed HOM couplers for the PERLE cavity have recently started in collaboration with JLab and...

Kyriacos Skoufaris (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

The design of a muon collider complex requires to overcome challenges associated with muons short lifetime. To reach the expected luminosity for a multi TeV muon collider ring an interaction region with beta values of the order of a few millimetres is required. Resulting challenges are the development of a chromatic compensation section that is not degrading the physical and dynamical...

Giovanni Savarese (Istituto Nazionale di Fisica Nucleare)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

At LNL (Laboratori Nazionali di Legnaro), the vacuum system of ALPI (Acceleratore Lineare Per Ioni) accelerator includes about 40 pumping groups installed in the 90s. Obsolescence and rigidity of the used hardware and deficit of spare parts required a complete renovation of the system and relative controls. In 2022 we made the first steps of the system renovation with the development and...

Mael Le Garrec (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

Chromaticity up to the third order in the LHC has been well observed in the LHC’s first and second operational runs, with regular beam-based measurements performed during commissioning and machine development. In previous runs however, no higher-order chromaticity could be observed. In 2022, dedicated collimators setups meant optics measurements could benefit from an improved range of...

Daniele Mirarchi (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

A two-day test of operation with Pb ion beams was carried out in the CERN Large Hadron Collider (LHC) in 2022, with the aim of gaining experience in view of the future high luminosity heavy-ion physics runs from 2023 onwards. The LHC experiments received the first Pb-Pb collisions at a record energy of 5.36 TeV centre-of-mass energy per colliding nucleon pair (beam energy 6.8 Z TeV). Bunch...

Eva Montbarbon (Institut National de Physique Nucléaire et de Physique des Particules), Freddy Poirier (Institut National de Physique Nucléaire et de Physique des Particules)
5/8/23, 4:30 PM
MC1.A26: Machine Detector Interface
Poster Presentation

The proposed FCC-ee machine is a high-energy, high-intensity and high-precision lepton collider which will require to reduce as much as possible the differential motions of its two beams at the interaction points. In this prospect, the vibration impacts of the quadrupoles in the region close to the interaction point are investigated. Considering the z-pole optics design and its dedicated...

Alex Hinton (Science and Technology Facilities Council)
5/8/23, 4:30 PM
MC2.T15: Undulators and Wigglers
Poster Presentation

Superconducting undulators provide a possible means of broadening the range of wavelengths that can be covered by an XFEL facility by generating larger magnetic fields at shorter periods than can be achieved using permanent magnet undulators.
As part of ongoing prototyping work at STFC to develop a superconducting helical undulator with 13 mm period and 5 mm magnetic gap, a test cryostat has...

Yi Jiao (Institute of High Energy Physics)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

The High Energy Photon Source (HEPS) is a 4th generation synchrotron radiation source being built in China. An APPLE-Knot undulator with a new configuration is designed for the XCMD beamline of the HEPS. It is the first time to apply four-row APPLE-Knot undulator in storage ring based light sources. The main differences between the novel design and the conventional design of the APPLE-Knot...

Masao Kuriki (Hiroshima University), Zachary Liptak (Hiroshima University)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

GaAs cathode is a unique device generating a spin-polarized electron beam by photo-electron effect with a circularly polarized laser illumination. Negative Electron Affinity (NEA) surface which is artificially made has an essential role in spin polarization, but the NEA surface has limited vitality. In this study, we activated GaAs as NEA cathode by evaporating Cs, K, and Sb metal on its...

Yoshitaka Taira (UVSOR Facility)
5/8/23, 4:30 PM
MC2.T26: Photon Beam Lines and Components
Poster Presentation

We are developing gamma-ray-induced positron annihilation spectroscopy (GiPAS) using ultra-short pulsed gamma rays at the UVSOR synchrotron facility in Japan. The gamma rays with the pulse width of picosecond range are generated by 90-degree inverse Compton scattering between a 750 MeV electron beam and an 800 nm laser. As the energy of the gamma rays is 6.6 MeV, gamma-ray irradiation produces...

Zizheng Li (Tsinghua University in Beijing)
5/8/23, 4:30 PM
MC2.A24: Accelerators and Storage Rings, Other
Poster Presentation

A laser-driven storage ring is proposed to generate steady-state, nanometer-long electron bunches. A ring of this type can produce coherent EUV radiation with greatly enhanced power and photon flux, benefiting a wide range of scientific and industrial communities, including condensed matter physics and computer chip fabrication. The underlying mechanism is called generalized longitudinal...

Fanglei Lin (Oak Ridge National Laboratory), Vadim Ptitsyn (Brookhaven National Laboratory (BNL)), Vasiliy Morozov (Oak Ridge National Laboratory)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

One of the design requirements to reach a high luminosity in the Electron Ion Collider (EIC) is the collision of matched spot sizes of hadron and electron beams at the IP, with a horizontal to vertical emittance ratio of up to almost 20. However, the natural vertical emittance of electron beams in the Electron Storage Ring (ESR) in EIC is a few orders of magnitude smaller than the horizontal...

Payam Khodadoost (Iranian Light Source Facility)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

Iranian light source facility (ILSF) is a 4th generation synchrotron with a nominal horizontal emittance of 270 pm.rad. Storage ring magnet-girder support stability is essential for beam stability. The support system of storage ring girders is essential to achieve the accuracy of adjustment and vibration stability. After studying different girder support systems and considering the stability...

Ryan Hensley (University of California at Davis)
5/8/23, 4:30 PM
MC1.T12: Beam Injection/Extraction and Transport
Poster Presentation

The Mu2e Experiment has stringent beam structure requirements; namely, its proton bunches with a time structure of 1.7µs in the Fermilab Delivery Ring. This beam structure will be delivered using the Fermilab 8-GeV Booster, the 8-GeV Recycler Ring, and the Delivery Ring. The 1.7-µs period of the Delivery Ring will generate the required beam structure by means of a third order resonant...

Guido Sterbini (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

Studies of the beam spectrum of the Large Hadron Collider (LHC) have revealed the existence of harmonics of the mains frequency (50~Hz), ranging from 50~Hz to 8~kHz, in the form of transverse dipolar excitations. The restart of the LHC operation in Run 3 was accompanied by substantial improvements in the beam instrumentation. In particular, the upgrade of the transverse damper’s observation...

Sergey Belomestnykh (Fermi National Accelerator Laboratory)
5/8/23, 4:30 PM
MC1.A03: Linear Lepton Colliders
Poster Presentation

Travelling wave (TW) SRF accelerating structures offer several advantages over the traditional standing wave structures: substantially lower Hpk/Eacc and lower Epk/Eacc, ratios of peak magnetic field and peak electric field to the accelerating gradient, respectively, together with substantially higher R/Q. In this paper we discuss how a linear collider Higgs factory HELEN can be built using...

Vincenzo Variale (Istituto Nazionale di Fisica Nucleare)
5/8/23, 4:30 PM
MC1.A16: Advanced Concepts
Poster Presentation

Energy recovery of residual ions may be needed to increase the energy efficiency of Neutral Beam (NB) injectors for fusion plants as DEMO while a deflection-based system has been proposed. A compact beam energy recovery system, composed of 2 Farady Cups (FC) with holes for D0 passage, based on space charge effects, very effective to recover ions with low residual energy, has been proposed...

Manar Amer (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)
5/8/23, 4:30 PM
MC2.T25: Lasers
Poster Presentation

Inverse Compton scattering (ICS) is a method used for X-ray production that has been possible in recent years due to the rapid development of ultra-fast, short, and stable oscillators. In addition, the research and development of high Finesse Fabry-Perot Cavities to store high average power inside it. ThomX is a new generation of compact X-ray source which implements the ICS method. It will...

Riccardo De Maria (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A01: Hadron Colliders
Poster Presentation

Run 4 will be the first operational run of the LHC with full deployment of the upgrades from the High Luminosity (HL-LHC) project planned for 2026-2028 (Long Shutdown 3). The commissioning goals for the first run were defined to approach steadily the design beam current, while already fulfilling significant luminosity goals. Despite extensive operational experience already gained, intensity...

Marcello Rossetti Conti (Istituto Nazionale di Fisica Nucleare)
5/8/23, 4:30 PM
MC1.A18: Energy Recovery Linacs(ERLs)
Poster Presentation

Energy Recovery linear accelerator (ERL) light source facilities based on superconducting radiofrequency (SRF) are deemed of the most resplendent techniques in the future of accelerator physics. Running in a continuous waves mode with a high repetition rate for a long timescale, we discuss High order modes (HOMs) analysis in a two-pass two-way ERL scheme where acceleration and deceleration of...

John Moss (Oak Ridge National Laboratory)
5/8/23, 4:30 PM
MC1.A08: Linear Accelerators
Poster Presentation

The Spallation Neutron Source (SNS) recently took delivery of a third Radiofrequency Quadrupole (RFQ03) that will ultimately be installed on the front-end (FE) of the SNS Linac. The first RFQ (RFQ01) operated in the SNS FE for more than a decade before being replaced with the second RFQ (RFQ02). RFQ01 was relocated to the Beam Test Facility (BTF) where it operated for five more years. The...

CRISTOBAL GARCIA JAIMES (European Organization for Nuclear Research), Tatiana Pieloni (European Organization for Nuclear Research)
5/8/23, 4:30 PM
MC1.A02: Lepton Circular Colliders
Poster Presentation

FCC-ee performance is challenged by magnetic errors and imperfections. Magnetic design simulations predict a systematic quadrupolar component in the arc dipoles significantly impacting the machine optics. This paper studies the impact of this component in the beta-beating and explores potential mitigations.

Reine Versteegen (European Synchrotron Radiation Facility)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

The new EBS machine was commissioned in 2020 with a targeted nominal beam emittance of 139pm.rad in the horizontal plane. The radiated energy in the 70 insertion devices present from the restart was expected to change the equilibrium emittance. This paper presents the prevision and the measurements performed as a function of the total radiated power in the machine. The comparison shows that...

Arnold Kruschinski (Helmholtz-Zentrum Berlin), Roman Klein (Physikalisch Technische Bundesanstalt Institut Berlin)
5/8/23, 4:30 PM
MC2.A05: Synchrotron Radiation Facilities
Poster Presentation

The concept of steady-state microbunching (SSMB) as a new scheme for the production of high power synchrotron radiation has been demonstrated at the Metrology Light Source in Berlin-Adlershof (MLS) [1].
At the MLS the same undulator section is used for the generation of the micro-structures onto the electron bunch as well as for the detection of the resulting coherent radiation from the...