Name: eeFACT 2025 - 70th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e– Colliders
Start: 2025-03-02T15:00:00+09:00
End: 2025-03-07T18:00:00+09:00
Location: EPOCHAL

Monday, 3 March 2025

08:20 Registration & Help Desk
Registration & Help Desk
08:20 - 18:00
Room: 301
09:00 Welcome Address - Tadashi Koseki (High Energy Accelerator Research Organization)
Welcome Address
- Tadashi Koseki (High Energy Accelerator Research Organization)
09:00 - 09:10
Room: 300
09:10 Present and future colliders
09:10 - 13:00
Room: 300
Contributions

09:10 DAFNE Recent Actiivity - Catia Milardi (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati)

09:40 BEPC-II and CEPC - Jie Gao (Chinese Academy of Sciences)

10:10 Project status and R&D efforts for Super Tau-Charm Facility - Jingyu Tang (University of Science and Technology of China)

11:00 Recent Performance of SuperKEKB - Yukiyoshi Ohnishi (High Energy Accelerator Research Organization)

11:30 LHC/HL-LHC - Oliver Brüning (European Organization for Nuclear Research)

12:00 The status of the Future Circular electron-positron Collider - Jacqueline Keintzel (European Organization for Nuclear Research)

12:30 Electron-Ion Collider Project Status Updates - Andrei Seryi (Thomas Jefferson National Accelerator Facility)
13:00 Lunch
Lunch
13:00 - 14:20
Room: 300
14:20 Present and future colliders
14:20 - 15:20
Room: 300
Contributions

14:20 ILC/CLIC/C3/HALHF/ALEGRO - Angeles Faus-Golfe (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie)

14:50 Collider Future Direction - Frank Zimmermann (European Organization for Nuclear Research)
15:20 Coffee Break
Coffee Break
15:20 - 15:40
Room: 300
15:40 Optics & Beam Dynamics
15:40 - 18:40
Room: 300
Contributions

15:40 Lattice and beam dynamics studies for a compact Z-factory e+e- collider - Ivan Koop (Russian Academy of Sciences)

16:10 Beam dynamics studies to address EIC challenges. - Christoph Montag (Brookhaven National Laboratory)

16:40 Consistent representation of lattices between optics code for FCC-ee, SuperKEKB, and more. - John Salvesen (European Organization for Nuclear Research)

17:10 Physics design of the STCF collider rings. - Ye Zou (University of Science and Technology of China)

17:40 Optics correction for the electron positron future circular collider: nominal and ballistic optics - Elaf Musa (Deutsches Elektronen-Synchrotron DESY)
Beam Instrumentation
15:40 - 18:40
Room: 304
Contributions

15:40 The CEPC beam position monitoring system - Yanfeng Sui (Institute of High Energy Physics)

16:10 Cavity based beam diagnostics for the STCF injector - Qian Wang (University of Science and Technology of China)

16:40 Effect of Bunch Feedback system to the luminosity of e+e- collider - Makoto Tobiyama (High Energy Accelerator Research Organization)

17:10 Nine Years of Optical beam diagnostic system development at SuperKEKB - Toshiyuki Mitsuhashi (High Energy Accelerator Research Organization)

17:40 Status and outlook of transverse profile measurement for FCCee - Daniele Butti (European Organization for Nuclear Research)

18:10 Cherenkov diffraction radiation studies for longitudinal diagnostics - Kacper Lasocha (European Organization for Nuclear Research)
18:40 Welcome Cocktail
Welcome Cocktail
18:40 - 20:30
Room: 102
Tuesday, 4 March 2025
09:00 Physics
09:00 - 12:50
Room: 304
Contributions

09:00 Recent B physics results from Belle II - Christoph Schwanda (Austrian Academy of Sciences)

09:30 Charm physics studies at BESIII, Belle (II) and STCF - Yu Zhang (University of South China)

10:00 Higgs physics at e+e- colliders - Manqi Ruan (Institute of High Energy Physics)

10:50 EW and QCD physics at e+e- colliders - Fabrizio Palla (Istituto Nazionale di Fisica Nucleare)

11:20 top physics at e+e- colliders - Adrian Irles (Instituto de Física Corpuscular)

11:50 Low mass new particle searches at e+e- collider experiments - enrico graziani (Istituto Nazionale di Fisica Nucleare)

12:20 High mass searches & global interpretations - Natsumi Nagata (The University of Tokyo)
Injector, Injection
09:00 - 12:50
Room: 300
Contributions

09:00 SuperKEKB injector and injection (status and progress ) - Naoko Iida (High Energy Accelerator Research Organization)

09:30 FCC-ee injector: Single and multibunch instability - Andrea Latina (European Organization for Nuclear Research)

10:00 Study for the CEPC injector and injections - Cai Meng (Chinese Academy of Sciences)

10:50 STCF injector and positron source design - Ailin Zhang (University of Science and Technology of China)

11:20 Summary of the Workshop AHIPS-2024 - Iryna Chaikovska (Université Paris-Saclay, CNRS/IN2P3, IJCLab)

11:50 Overview of positron sources and development for ILC - Yoshinori Enomoto (High Energy Accelerator Research Organization)

12:20 Requirements for electron sources for lepton colliders - Thomas Lucas (Paul Scherrer Institute)
12:50 Group Photo
Group Photo
12:50 - 13:00

13:00 Lunch
Lunch
13:00 - 14:20
14:20 Magnets, IR, Alignment
14:20 - 15:50
Room: 304
Contributions

14:20 Progress of the IR superconducting magnets at STCF - Wenbin Ma (High Magnetic Field Laboratory)

14:50 Development of the CCT superconducting magnets for the STCF interaction region - Shaoqing Wei (Institute of Plasma Physics)

15:20 SuperKEKB IR upgrade idea - XUDONG WANG (High Energy Accelerator Research Organization)
Vacuum
14:20 - 15:50
Room: 300
Contributions

14:20 CEPC Vacuum system development progress - Yongsheng Ma (Institute of High Energy Physics)

14:50 Two instabilities related to vacuum chamber of accelerators - Oleg Malyshev (Science and Technology Facilities Council)

15:20 EIC vacuum system - Charles Hetzel (Brookhaven National Laboratory)
15:50 Coffee Break
Coffee Break
15:50 - 16:10
16:10 Magnets, IR, Alignment
16:10 - 18:10
Room: 304
Contributions

16:10 EIC Interaction Region Design and Magnets - Christoph Montag (Brookhaven National Laboratory)

16:40 A novel spin rotator concept for longitudinally polarized beam for Chiral Belle at SuperKEKB - Brett Parker (Brookhaven National Laboratory)

17:10 Experiences with SuperKEKB IR alignment & installation - Mika Masuzawa (High Energy Accelerator Research Organization)
Vacuum
16:10 - 17:10
Room: 300
Contributions

16:10 Development of low SEY coating in SuperKEKB - Mu-Lee Yao (High Energy Accelerator Research Organization)

16:40 Status report on the SuperKEKB vacuum system - Kyo Shibata (High Energy Accelerator Research Organization)
17:10 Machine Detector Interface
17:10 - 18:10
Room: 300
Contributions

17:10 Belle II Loss Monitor Activities for Understanding the SBL Mechanism - Keisuke Yoshihara (University of Hawaii System)

17:40 Investigation on injection-related beam loss at SuperKEKB - Meng Li (Chinese Academy of Sciences)
Wednesday, 5 March 2025
09:00 Magnets, IR, Alignment
09:00 - 10:00
Room: 304
Contributions

09:00 Alignment plans for FCC-ee - Helene Mainaud Durand (European Organization for Nuclear Research)

09:30 First view at alignment tolerances in the FCCee Interaction Region - Satya Sai Jagabathuni (European Organization for Nuclear Research)
Machine Detector Interface
09:00 - 10:30
Room: 300
Contributions

09:00 SuperKEKB/Belle II background studies update - Qingyuan Liu (University of Hawaii System)

09:30 Overview of the CEPC MDI - Haoyu Shi (Chinese Academy of Sciences)

10:00 Detector backgrounds at FCC-ee - Andrea Ciarma (Istituto Nazionale di Fisica Nucleare)
10:00 Cryogenics, Infrastructures
10:00 - 10:30
Room: 304
Contributions

10:00 Ongoing accelerator cryogenics in China - Rui Ge (Institute of High Energy Physics)
10:30 Coffee Break
Coffee Break
10:30 - 10:50
10:50 Cryogenics, Infrastructures
10:50 - 12:20
Room: 304
Contributions

10:50 Cryogenics system for ILC - Kota Nakanishi (High Energy Accelerator Research Organization)

11:20 Conventional facilities of CEPC - Jinshu HUANG (Institute of High Energy Physics)

11:50 Research Activities Aimed at Decarbonizing the Life Cycle of Accelerator Facilities - Masakazu Yoshioka (High Energy Accelerator Research Organization)
Machine Detector Interface
10:50 - 12:50
Room: 300
Contributions

10:50 Optics design of the interaction region for the STCF - Linhao Zhang (University of Science and Technology of China)

11:20 Recent Advances in Beam-Related Background Studies at the Electron-Ion Collider - Andrii Natochii (Brookhaven National Laboratory)

11:50 Overview of the FCC-ee MDI - Manuela Boscolo (Istituto Nazionale di Fisica Nucleare)

12:20 Polarimeter and small angle detector issues - Michael Sullivan (SLAC National Accelerator Laboratory)
12:20 Lunch
Lunch
12:20 - 13:50
Room: 304

12:50 Lunch
Lunch
12:50 - 13:50
Room: 300

13:50 Laboratory Tour
Laboratory Tour
13:50 - 18:20
Thursday, 6 March 2025
09:00 Cryogenics, Infrastructures
09:00 - 09:30
Room: 304
Contributions

09:00 The European LDG Working Group on Sustainability Assessment of Future Accelerators - Maxim Titov (Commissariat à l'Energie Atomique)
Polarization, Energy calibration, Monochromatization
09:00 - 10:30
Room: 300
Contributions

09:00 CEPC polarization status - Zhe Duan (Institute of High Energy Physics)

09:30 Lessons from VEPP-4M polarization studies - Ivan Nikolaev (Russian Academy of Sciences)

10:00 Spin Polarization Simulations for the FCC-ee - Yi Wu (École Polytechnique Fédérale de Lausanne)
09:30 RF
09:30 - 10:30
Room: 304
Contributions

09:30 High current-related issues in KEKB/SuperKEKB RF operation - Tetsuya Kobayashi (High Energy Accelerator Research Organization)

10:00 Challenges in RF systems for Energy Recovering Linacs - Walid Kaabi (Université Paris-Saclay, CNRS/IN2P3, IJCLab)
10:30 Coffee Break
Coffee Break
10:30 - 10:50
10:50 RF
10:50 - 12:50
Room: 304
Contributions

10:50 Status and perspectives of RF systems for Hi-Lumi LHC - Rama Calaga (European Organization for Nuclear Research)

11:20 Improving Beam Quality and Reliability through Low-Level RF Control in Superconducting Accelerators - Feng Qiu (Institute of Modern Physics, Chinese Academy of Sciences)

11:50 Design and prototyping of a HOM-damping TM020-mode RF cavity for the STCF collider rings - Yelong Wei (University of Science and Technology of China)

12:20 ILC RF system challenges and status of high-gradient SC cavities - Mathieu Omet (High Energy Accelerator Research Organization)
Polarization, Energy calibration, Monochromatization
10:50 - 12:50
Room: 300
Contributions

10:50 The FCC-ee polarimeter - Robert Kieffer (European Organization for Nuclear Research) Robert Kieffer (European Organization for Nuclear Research)

11:20 Status of polarized beam operation at SuperKEKB - J. Roney (Victoria University)

11:50 Polarization status at the EIC - Vahid Ranjbar (Brookhaven National Laboratory)

12:20 Advances in Free Spin Precession Method - Ivan Koop (Russian Academy of Sciences)
12:50 Lunch
Lunch
12:50 - 14:20
14:20 RF
14:20 - 15:50
Room: 304
Contributions

14:20 RF systems for circular Higgs factory projects - Jiyuan Zhai (Institute of High Energy Physics)

14:50 RF systems for a future Muon collider - Dario Giove (Istituto Nazionale di Fisica Nucleare)

15:20 High Efficiency klystrons for future colliders - Jiyuan Zhai (Institute of High Energy Physics)
Polarization, Energy calibration, Monochromatization
14:20 - 14:50
Room: 300
Contributions

14:20 Calibrating the energy at the Future Circular electron-positron Collider - Jacqueline Keintzel (European Organization for Nuclear Research)
14:50 Beam-beam & Instabilities
14:50 - 15:50
Room: 300
Contributions

14:50 Beam-beam simulation studies for the Electron-Ion Collider - Yun Luo (Brookhaven National Laboratory)

15:20 Impedance budget and single-bunch collective instability simulations for SuperKEKB low energy ring with a nonlinear collimation system after a first long shutdown - Takuya Ishibashi (High Energy Accelerator Research Organization)
15:50 Coffee Break
Coffee Break
15:50 - 16:10
16:10 Machine learning and automatic tuning
16:10 - 17:40
Room: 304
Contributions

16:10 Luminosity tuning with ML in FCCee - Vaibhavi Gawas (European Organization for Nuclear Research)

16:40 Using RL to maximize luminosity at BEPCII - Jiaqi Fan (Chinese Academy of Sciences)

17:10 AI for FCCee - what will it bring and what needs to be prepared - Verena Kain (European Organization for Nuclear Research)
Beam-beam & Instabilities
16:10 - 17:40
Room: 300
Contributions

16:10 Impedance Budget and Single-Bunch Instabilities at FCC-ee - Dora Gibellieri (European Organization for Nuclear Research)

16:40 Impedance and beam-beam effects for FCC-ee - Roxana SOOS (European Organization for Nuclear Research)

17:10 Operation overview and luminosity integral achievement at VEPP-2000 collider - Yury Rogovsky (Russian Academy of Sciences)
19:00 Banquet Dinner
Banquet Dinner
19:00 - 21:00
Friday, 7 March 2025
09:00 Machine learning and automatic tuning
09:00 - 10:30
Room: 304
Contributions

09:00 Advanced ML at APS - Nikita Kuklev (Fermi National Accelerator Laboratory)

09:30 FCCee Interaction Point optics tuning - Satya Sai Jagabathuni (European Organization for Nuclear Research)

10:00 DAMA design optimization for light sources and implications for FCCee - Daniel Ratner (SLAC National Accelerator Laboratory)
Beam-beam & Instabilities
09:00 - 10:30
Room: 300
Contributions

09:00 Single beam collective effects at CEPC - Na Wang (University of Chinese Academy of Sciences)

09:30 Beam-beam effects in the STCF collider, - Sangya Li (University of Science and Technology of China)

10:00 Beam-Beam Effects in SuperKEKB - Kazuhito Ohmi (High Energy Accelerator Research Organization)
10:30 Coffee Break
Coffee Break
10:30 - 10:50
10:50 Machine learning and automatic tuning
10:50 - 12:20
Room: 304
Contributions

10:50 Machine learning experience at SuperKEKB - Gaku Mitsuka (High Energy Accelerator Research Organization)

11:20 ML techniques for polarization improvements in RHIC and EIC - Eiad Hamwi (Cornell University)

11:50 Status and limitations of SuperKEKB optics tuning - Yukiyoshi Ohnishi (High Energy Accelerator Research Organization)
Beam-beam & Instabilities
10:50 - 12:20
Room: 300
Contributions

10:50 Impact of lattice errors and correction with beam-beam - Leon Van Riesen-Haupt (European Organization for Nuclear Research) Léon van Riesen-Haupt (École Polytechnique Fédérale de Lausanne)

11:20 Beam-beam Effects at CEPC - Yuan Zhang (Institute of High Energy Physics)

11:50 Beam-Ion Instability in the EIC electron storage ring - Boris Podobedov (Brookhaven National Laboratory)
12:20 Lunch
Lunch
12:20 - 14:00
14:00 Special Session: Special Sesson on Combined Effects
Special Sesson on Combined Effects
14:00 - 15:00
Room: 300
Contributions

14:00 Interplay of different beam dynamics effects in DAFNE - Catia Milardi (Istituto Nazionale di Fisica Nucleare)

14:15 Simulated physical processes in Bmad - Eiad Hamwi (Cornell University (CLASSE))

14:30 Highlights from the WG5 MDI session - Manuela Boscolo (Istituto Nazionale di Fisica Nucleare)

14:45 Remarks on combined effects - Demin Zhou (High Energy Accelerator Research Organization)
15:00 Special Session 2
15:00 - 16:00
Room: 300
Contributions

15:00 Sudden Beam Loss (SBL) Events at SuperKEKB, Observations and Measures - Kyo Shibata (High Energy Accelerator Research Organization)

15:20 Simulations on SBL - Kazuhito Ohmi (High Energy Accelerator Research Organization)

15:40 Discussions on SBL
16:00 Coffee Break
Coffee Break
16:00 - 16:20
Room: 300
16:20 Summary
16:20 - 17:20
Room: 300
Contributions

16:20 Summary of the physics session - Akimasa Ishikawa (High Energy Accelerator Research Organization)

16:30 Summary of the beam physics-related working groups - Rogelio Tomas (European Organization for Nuclear Research) Xavier Buffat (European Organization for Nuclear Research)

16:55 Summary of the hardware-related working groups - Kazuro Furukawa (High Energy Accelerator Research Organization)