Name: FEL2026 - 42nd International Free Electron Laser Conference
Start: 2026-08-23T09:00:00-07:00
End: 2026-08-28T17:00:00-07:00
Location: No location set

FEL2026 - 42nd International Free Electron Laser Conference

from Sunday, 23 August 2026 (09:00) to Friday, 28 August 2026 (17:00)

Monday, 17 August 2026
Tuesday, 18 August 2026
Wednesday, 19 August 2026
Thursday, 20 August 2026
Friday, 21 August 2026
Saturday, 22 August 2026
Sunday, 23 August 2026

15:00 Registration Starts
Registration Starts
15:00 - 17:00

17:00 Welcome Reception
Welcome Reception
17:00 - 18:30

Monday, 24 August 2026
08:45 First Lasing and Special Topics (Invited)
08:45 - 10:10
Contributions

08:55 In Memoriam: Todd Smith - Alan Schwettman (Stanford University)

09:25 XFEL science overview and outlook - Kelly Gaffney (SLAC National Accelerator Laboratory)
10:30 FEL Prize Talks (Invited)
10:30 - 12:10
Contributions

10:30 Which is better, small or large? -Lessons we learned at operations of SACLA- - Hitoshi Tanaka (RIKEN SPring-8 Center)

10:55 SACLA　XFEL Facility: Now and What's Next - Toru Hara (RIKEN SPring-8 Center)

11:20 Toward zeptosecond FELs - Takashi Tanaka (RIKEN SPring-8 Center)

11:45 Electron and photon beam diagnostics and wakefield studies with corrugated structures - Philipp Dijkstal (Paul Scherrer Institute)
14:00 FEL Theory and Machine Learning (Invited)
14:00 - 15:40
Contributions

14:00 Space Charge Studies for Enhanced SASE at the Soft X-ray Beamline Athos at SwissFEL - Sven Reiche (Paul Scherrer Institute)

14:25 Homogeneity and Criticality of the time-dependent FEL action - Giovanni Perosa (European X-Ray Free-Electron Laser)

14:50 Neural networks and differentiable-simulation based complete 6-dimensional phase space reconstruction using standard accelerator elements - Seongyeol Kim (Pohang Accelerator Laboratory)

15:15 Overview and outlook of applying AI/ML to accelerator and FEL research - Auralee Edelen (SLAC National Accelerator Laboratory)
16:00 Monday Poster Session
16:00 - 18:00
Contributions

16:00 Status of the high-power, tunable THz FEL source at PITZ - Namra Aftab (Deutsches Elektronen-Synchrotron DESY)

16:00 Compact Energy Recovery Linac-Based FEL for EUV Lithography - Ji Qiang (Lawrence Berkeley National Laboratory)

16:00 Live Longitudinal Modeling for LCLS and LCLS-II - Jingyi Tang (Stanford University)

16:00 Differentiable 1D FEL Simulation for Gradient-Based Optimization and Inference - Jingyi Tang (Stanford University)

16:00 Beam Shaping via Latent-Space Optimization of Longitudinal Phase Space in XFELs - Zihan Zhu (SLAC National Accelerator Laboratory)

16:00 Study of Instantaneous Surface Current Distribution on an Echelette Type Grating for Coherent Smith-Purcell Radiation - Hiroyuki Hama (Tohoku University)

16:00 AI-assisted FEL tuning for attosecond pulse generation - Aaron Reed (SLAC National Accelerator Laboratory)

16:00 Machine Learning Optimization of E-Beam Transport in the ORGAD Accelerator - Amir Weinberg (Tel Aviv University)

16:00 Machine-learning-based four-dimensional phase space reconstruction for future S3FEL electron beam diagnosis - Cheng-xin Wu (Institute of Advanced Light Source Facilities Shenzhen) Zhenbiao Sun (Institute of Advanced Light Source Facilities Shenzhen)

16:00 Neural Network Quantum Molecular Dynamics for Simulating Excited-State Water Chemistry - Samuel Sahel-Schackis (SLAC National Accelerator Laboratory, Stanford University)

16:00 Returning European XFEL to user operation after the 2025 long shutdown - Matthias Scholz (Deutsches Elektronen-Synchrotron DESY)

16:00 Generation of very soft x-ray at the LCLS - Aliaksei Halavanau (SLAC National Accelerator Laboratory)

16:00 Conceptual Design Studies of a PITZ-Like THz FEL for Pump–Probe Applications at the European XFEL - Mikhail Krasilnikov (Deutsches Elektronen-Synchrotron DESY)

16:00 Attosecond two-color x-ray free-electron lasers with dual chirp-taper configuration and bunching inheritance - Hao Sun (Institute of Advanced Light Source Facilities Shenzhen)

16:00 Generalization of the Ming Xie shot noise formula to treat different pulse profiles - Henry Freund (University of Maryland, College Park)

16:00 Current horn suppression using laser heater shaping for FEL generation - Chang-Kyu Sung (Pohang Accelerator Laboratory)

16:00 The UK vision for next‑generation XFELs - David Dunning (Science and Technology Facilities Council)

16:00 Numerical Analysis of FEL Pulse-Energy RMS Jitter in FBD-Based HXRSS - Kookjin Moon (Pohang Accelerator Laboratory)

16:00 Generating Coherent Undulator Radiation from CEP-stable Pre-bunched Pulses - Arnav Swaroop (SLAC National Accelerator Laboratory, University of California, Berkeley)

16:00 High-Repetition-Rate Tunable UV Laser System for External Seeding of FLASH - Ingmar Hartl (Deutsches Elektronen-Synchrotron DESY)

16:00 Generation of tunable, phase-locked hard X-ray pulse pairs - MyungHoon Cho (Pohang Accelerator Laboratory) Chi Hyun Shim (Pohang Accelerator Laboratory) Philipp Dijkstal (Paul Scherrer Institute) Wenxiang Hu (Paul Scherrer Institute)

16:00 Demonstration of direct-amplification enabled harmonic generation in an ultraviolet free-electron laser - Hao Sun (Institute of Advanced Light Source Facilities Shenzhen)

16:00 Hard X-ray self-seeding design for SwissFEL - Philipp Dijkstal (Paul Scherrer Institute)

16:00 Mitigating the Sensitivity to Seed-Laser Dispersion in Seeded Free-Electron Lasers via Direct-Amplification Enabled Harmonic Generation - Lanpeng Ni (Shanghai Institute of Applied Physics)

16:00 Coherent soft X-ray radiation up to 1.6 keV by external seeding at SwissFEL - Philipp Dijkstal (Paul Scherrer Institute) Wenxiang Hu (Paul Scherrer Institute) Sven Reiche (Paul Scherrer Institute)

16:00 Experimental Study of Third-Harmonic Laser Heating in the LCLS-I Injector - Ahmed Osman (SLAC National Accelerator Laboratory)

16:00 Laser-Induced Structured Electron Beam - Xiujie Deng (Tsinghua University)

16:00 Numerical Studies of Trapped-Ion Stability for Various Bunch-Gap Patterns and Beam Loading in ERL-FEL - Naoto Yamamoto (High Energy Accelerator Research Organization)

16:00 TDC-based longitudinal manipulator - Alex DeSimone (Northern Illinois University)

16:00 Generation of Sawtooth Correlations for Brighter Compact Light Sources - Alex DeSimone (Northern Illinois University)

16:00 Physics Design of S3FEL Superconducting Linear Accelerator - Zhenbiao Sun (Institute of Advanced Light Source Facilities Shenzhen)

16:00 Beam optics design for ERL-based EUV-FEL - Yosuke Honda (High Energy Accelerator Research Organization)

16:00 Attosecond xFEL structure originating from dispersive space charge waves in a low energy injector - David Cesar (SLAC National Accelerator Laboratory)

16:00 Online X-ray Characterization Toward Closed-Loop FEL Control at LCLS-II - Jack Hirschman (Stanford University)

16:00 Simulation model calibration and optimization of the beamline based on generative phase space reconstruction methodology - Seongyeol Kim (Pohang Accelerator Laboratory)

16:00 Design and Implementation of a Tapering Enhanced Superradiant Source at THz Frequencies - Amir Weinberg (Tel Aviv University)

16:00 A Modular Framework for Integrated Start-to-End Simulation of Seeded Free-Electron Lasers - Pardis Niknejadi (Deutsches Elektronen-Synchrotron DESY)

16:00 Evaluating ML architectures for latent beam representation at LCLS - Kiley Gruenberg (SLAC National Accelerator Laboratory)

16:00 GINGER-3D -- Code Summary and Some Particular Results - William Fawley (Lawrence Berkeley National Laboratory)

16:00 Radiation friction in a relativistic electron beam passing through an undulator. - Vladimir Ognivenko (National Science Centre Kharkiv University)

16:00 Attosecond spike formation from slice-resolved bunching dynamics in sign-reversing chirped undulator tapering - Longdi Zhu (École Polytechnique Fédérale de Lausanne)

16:00 Lasing of the elliptically polarized undulators in SXFEL - Zhangfeng Gao (Shanghai Synchrotron Radiation Facility)

16:00 Generation of fresh-slice self-seeded hard X-ray FELs at PAL-XFEL - Chang-Kyu Sung (Pohang Accelerator Laboratory)

16:00 Advancing Seeded-FEL Performance at FERMI: Operational Status and Future Plans - Primoz Rebernik Ribic (Elettra-Sincrotrone Trieste S.C.p.A.)

16:00 Harmonic modulation for ultra-wide tuning range terahertz free-electron laser via frequency-beating laser modulation - Lingjun Tu (Institute of Advanced Light Source Facilities Shenzhen)

16:00 Cathode laser temporal shaping for LCLS-HE - Nicholas Sudar (SLAC National Accelerator Laboratory)

17:40 Fast Electron Beam Steering for MHz X-ray Beam Sharing - Trey Guest (European X-Ray Free-Electron Laser)
Tuesday, 25 August 2026
08:30 SASE FEL (Invited)
08:30 - 09:30
Contributions

08:30 Reverse undulator tapering for polarization control and short pulse generation - Evgeny Schneidmiller (Deutsches Elektronen-Synchrotron DESY)

08:50 Sub-Femtosecond X-ray Free-Electron Laser Driven by Additional Bunch Compression via Reverse-Energy Chirp at SACLA - Eito Iwai (Japan Synchrotron Radiation Research Institute, RIKEN SPring-8 Center)

09:10 Coherent Twin-Pulse Generation at XFELs: Dual- Injector-Laser Production of Electron Bunch Pairs for SASE, HXRSS and PWFA - Ingmar Hartl (Deutsches Elektronen-Synchrotron DESY)
09:30 SASE FEL (Contributed)
09:30 - 10:10
Contributions

09:30 Enhanced generation of single-spike hard x-ray free-electron laser pulses with lower charge and shorter electron beams in the injector - Alexander Malyzhenkov (European Organization for Nuclear Research) Eduard Prat (Paul Scherrer Institute) Gian Luca Orlandi (Paul Scherrer Institute) Sven Reiche (Paul Scherrer Institute) Tobias Weilbach (Paul Scherrer Institute)

09:50 Operational experience and challenges of a CW X-ray FEL at SLAC - Christopher Zimmer (SLAC National Accelerator Laboratory)
10:30 Seeded FEL (Invited)
10:30 - 11:20
Contributions

10:30 Few-femtosecond extreme-ultraviolet pulses and pulse pairs with tunable topological properties - Primoz Rebernik Ribic (Elettra-Sincrotrone Trieste S.C.p.A.)

10:55 First Lasing and Stable Operation of a Direct-Amplification Enabled Harmonic Generation Free-Electron Laser - Zheng Qi (Shanghai Advanced Research Institute)
11:20 Seeded FEL (Contributed)
11:20 - 12:10
Contributions

11:20 Coherent Undulator Radiation Seeding of High-Gain Harmonic Generation - Jenny Morgan (SLAC National Accelerator Laboratory)

11:36 HXRSS at the European XFEL: Progress from SASE2 to SASE1 - Matthias Scholz (Deutsches Elektronen-Synchrotron DESY)

11:52 Recent development of Hard X-Ray Self-Seeding design and experiment tests for LCLS-II-HE high repetition rate operation - Ye Hong (SLAC National Accelerator Laboratory)
14:00 FEL Oscillators and Infrared FEL (Invited)
14:00 - 15:00
Contributions

14:00 Lasing of a Cavity Based X-ray Source - Maurizio Vannoni (European X-Ray Free-Electron Laser)

14:30 Continuous THz Band Coverage through Precise Electron Beam Tailoring in Free-electron Lasers - Kaiqing Zhang (Shanghai Synchrotron Radiation Facility)
15:00 FEL Oscillators and Infrared FEL (Contributed)
15:00 - 15:40
Contributions

15:00 Cavity-based XFEL at LCLS - Aliaksei Halavanau (SLAC National Accelerator Laboratory) Zhirong Huang (SLAC National Accelerator Laboratory)

15:20 High Harmonic Generation Driven by Mid-Infrared Free-Electron Lasers at 2 µm and 5 µm - Ryoichi Hajima (National Institutes for Quantum Science and Technology)
16:00 Tuesday Poster Session
16:00 - 18:00
Contributions

16:00 Toward Adaptive Dynamic Desynchronization in FEL Oscillators - Levi Fisher (University of Hawaiʻi at Mānoa)

16:00 Present status of Kyoto University Free Electron Laser facility - Heishun Zen (Kyoto University)

16:00 Improvement of KU-FEL performance by a new 1.6-cell photocathode RF gun with a semiconductor cathode - Heishun Zen (Kyoto University)

16:00 Efficiency enhancement in regenerative amplifier free-electron lasers using a tapered undulator* - Henry Freund (University of Maryland, College Park)

16:00 Ultra-bright Cavity-based Free Electron Lasers - Madison Singleton (SLAC National Accelerator Laboratory)

16:00 Generation of frequency-tunable superradiant THz free electron laser at NSRRC - Ming-Chang Chou (National Synchrotron Radiation Research Center)

16:00 An x-ray regenerative amplifier free-electron laser with a step-tapered undulator* - Henry Freund (University of Maryland, College Park)

16:00 Observation of strong multi-pulse effects on spectral Broadening of long-wavelength infrared FEL pulses in a KRS-5 plate - Heishun Zen (Kyoto University)

16:00 Active Q-Switched XRAFEL with Start-to-End LCLS-II-HE Beams - Jingyi Tang (Stanford University)

16:00 Tunable Compact Non-Coplanar X-ray Cavity for Cavity Based X-ray Free-Electron Lasers - Yuri Shvyd'ko (Argonne National Laboratory)

16:00 THz radiation driven by SRF accelerator at Peking University: plan and progress - Senlin Huang (Peking University)

16:00 STATUS OF INFRARED FEL PROJECT AT ANHUI UNIVERSITY - Qika Jia (University of Science and Technology of China)

16:00 Laser-modulation-driven x-ray pulse shaping in regenerative amplifier free-electron lasers - Zhen Zhang (SLAC National Accelerator Laboratory)

16:00 Comment on ‘‘Laser mode complexity analysis in infrared waveguide free-electron lasers” - Qika Jia (University of Science and Technology of China)

16:00 Nanosecond Radio-Frequency Pulse Driven Photogun for Very Hard X-ray FELs - Ankur Dhar (SLAC National Accelerator Laboratory)

16:00 Development of a Sheet-Beam Electron Source for Terahertz Smith–Purcell Radiation - Makoto Asakawa (Kansai University)

16:00 Temporal photocathode laser pulse shape control for EuXFEL, FLASH and PITZ - Ingmar Hartl (Deutsches Elektronen-Synchrotron DESY)

16:00 Transverse, Longitudinal and Intensity Jitter of the LCLS-II Beam powered by Superconducting RF - Franz-Josef Decker (SLAC National Accelerator Laboratory)

16:00 Performance of the superconducting linac RF for LCLS - Sebastian Aderhold (SLAC National Accelerator Laboratory)

16:00 Automation strategy and status at European XFEL - Matthias Scholz (Deutsches Elektronen-Synchrotron DESY)

16:00 Electron Beam Instrumentation for Advanced FEL Schemes in SwissFEL - Rasmus Ischebeck (Paul Scherrer Institute)

16:00 Impact of fiducial magnets near the PITZ L-band electron source - Frank Stephan (Deutsches Elektronen-Synchrotron DESY)

16:00 Accelerator Modeling Ecosystem for LCLS - Michael Ehrlichman (SLAC National Accelerator Laboratory)

16:00 Progress towards control of the carrier envelope phase in an FEL-oscillator - J. Michael Klopf (Helmholtz-Zentrum Dresden-Rossendorf)

16:00 Extreme high-order harmonics from an FEL-oscillator - J. Michael Klopf (Helmholtz-Zentrum Dresden-Rossendorf)

16:00 Optimization of SRF CW Photoinjector Brightness for Optimal Performance of the XFEL - Mikhail Krasilnikov (Deutsches Elektronen-Synchrotron DESY)

16:00 Development of a hybrid prism spectrometer with linear dispersion for coherent-radiation-based longitudinal diagnostics of ultrashort electron bunches - Konstantin Kruchinin (SLAC National Accelerator Laboratory)

16:00 Time-resolved cross-correlation measurements of a two-color dual oscillator infrared free-electron laser - AKASH CHANDRA BEHERA (Fritz Haber Institute of the Max Planck Society)

16:00 Fault-tolerance analysis for an injector of continuous-wave free-electron lasers - Zhen Zhang (SLAC National Accelerator Laboratory)

16:00 Characterization of Energy and Energy Spread of Electron Beams from the High-Brightness Photoinjector at NSRRC - Ming-Chang Chou (National Synchrotron Radiation Research Center)

16:00 Studies on optical cavity misalignment effects in the IR-FEL at RRCAT, India - Sona Chandran P (Raja Ramanna Centre for Advanced Technology)

16:00 Feasibility Modeling of Medical LINAC Driven Free Electron Lasers - Mauro Siebeneichler Leffever (University of Nevada, Las Vegas, Varian Medical Systems (United States))

16:00 Gun5: A New Generation of Normal-Conducting RF Photogun for Long-Pulse Operation at the European XFEL - Mikhail Krasilnikov (Deutsches Elektronen-Synchrotron DESY)

16:00 Title: Nonlinear Photoemission for Bright Beams in X-band Photoinjectors - Kevin Eckrosh (Arizona State University, Biodesign Institute)

16:00 The Optical Synchronization System at SHINE - Jinguo Wang (Shanghai Advanced Research Institute)

16:00 Enabling Arbitrary Color Attosecond X-ray Pump-Probe Experiments with the LCLS Soft X-ray Delay Line - Sean OTool (Stanford University)

16:00 Temperature controlled, space charge injected Potassium Tantalate Niobate (KTN) deflector - Timothy Suzuki (Michigan State University)

16:00 Autonomous operation of the DIAG0 diagnostic line for 6D phase-space monitoring at LCLS-II - Dylan Kennedy (SLAC National Accelerator Laboratory)

16:00 Dispersion tuning in linear accelerators using microbunching damping - Sergei Kladov (University of Chicago)

16:00 Python wire scanner analsysis validation using historical LCLS data - Tyler Kabana (SLAC National Accelerator Laboratory)

16:00 A Digital Twin Framework for Particle Accelerators - David Dunning (Science and Technology Facilities Council)

16:00 Towards Fully Non-Destructive Sub-Micrometer Resolution Transverse Diagnostics in FELs Using a Nano-Fabricated Wire Scanner - Francesca Addesa (Paul Scherrer Institute)

17:40 Self-referenced attosecond streaking with electron-beam-driven fields in FELs - Federico Vismarra (SLAC National Accelerator Laboratory)

17:40 A Hard X-ray Storage Ring Free Electron Laser Oscillator at the APS-U - Emmanuel Aneke (Northwestern University)

17:40 When High QE Isn’t Enough: Stabilizing LCLS-II Photocathodes - Theodore Vecchione (SLAC National Accelerator Laboratory)
Wednesday, 26 August 2026
08:30 Undulators and Photon Beamline Instrumentation (Invited)
08:30 - 09:40
Contributions

08:30 Hard x-ray attosecond metrology via split-delay autocorrelation - Yanwen Sun (SLAC National Accelerator Laboratory)

08:55 X-ray diagnostics for a Cavity-based XFEL - Jan Grünert (European X-Ray Free-Electron Laser)

09:20 CASPER: a Compact Arbitrary Superconducting Polarisation Emitting Radiator - Marco Calvi (Paul Scherrer Institute)
09:40 Undulators and Photon Beamline Instrumentation (Contributed)
09:40 - 10:10
Contributions

09:40 Angular streaking at high repetition rate - Veronica Guo (Stanford University)

09:55 Automatic alignment of the HIgh REsolution hard X-ray single shot (HIREX) spectrometer to use as a feedback system for the European XFEL beamlines - Naresh Kujala (European X-Ray Free-Electron Laser)
10:30 Science Applications (Invited)
10:30 - 12:10
Contributions

10:30 Damage-free diffraction and spectroscopy with attosecond hard X-ray pulses - Ichiro Inoue (The University of Tokyo)

10:55 Coherent nonlinear X-ray four-photon interaction with core-shell electrons - Gregor Knopp (Paul Scherrer Institute)

11:20 Nanoscale Polarization Transient Gratings - Laura Foglia (Elettra-Sincrotrone Trieste S.C.p.A.)

11:45 Progress in soft X-ray Science with High Repetition Rate FELs - Taran Driver (SLAC National Accelerator Laboratory)
14:00 Electron Beam Dynamics (Invited)
14:00 - 14:50
Contributions

14:00 Review of coherent synchrotron radiation-immune magnetic compressors - Yi Jiao (Chinese Academy of Sciences)

14:25 Ultra-short FEL Pulses by Laser-driven Local Bunch Compression - Philipp Amstutz (Deutsches Elektronen-Synchrotron DESY)
14:50 Electron Beam Dynamics (Contributed)
14:50 - 15:40
Contributions

14:50 Microbunching instability studies and lasing at FERMI with one-and two-stage compression scheme - Giovanni Campri (Elettra-Sincrotrone Trieste S.C.p.A.)

15:15 Beam Halo Formation via Longitudinal-Transverse Coupling in Continuous-Wave Photoinjectors - Zhen Zhang (SLAC National Accelerator Laboratory)
17:00 Wednesday Poster Session
17:00 - 18:00
Contributions

17:00 Recalculation of brilliance of x-ray sources via Lambert function for SASE FELs - Simone Di Mitri (Elettra-Sincrotrone Trieste S.C.p.A.)

17:00 Numerical and experimental benchmarking of microbunching instability with intrabeam scattering at linac-FELs - Simone Di Mitri (Elettra-Sincrotrone Trieste S.C.p.A.)

17:00 Single-Cycle Waveform Control of Undulator Radiation Using Plasma-Accelerated Beams - Jenny Morgan (SLAC National Accelerator Laboratory)

17:00 Pair beams unlock beyond‑terawatt attosecond free‑electron laser pulses - Cagri Erciyes (Max Planck Institute for Nuclear Physics)

17:00 Slippage and Energy Chirp Effects in the Laser-Plasma-Accelerator-Driven FEL at the LBNL BELLA Center - Tehya Andersen (Lawrence Berkeley National Laboratory, University of California, Berkeley)

17:00 Modeling BELLA center FEL results - Samuel Barber (Lawrence Berkeley National Laboratory)

17:00 FACET-II: recent experimental results and plans for R&D relevant to FEL applications - Claudio Emma (SLAC National Accelerator Laboratory)

17:00 Stochastic Cooling Enhanced Steady-State Microbunching - Xiujie Deng (Tsinghua University)

17:00 Opportunities offered by the variable polarization afterburner at the European XFEL - Suren Karabekyan (European X-Ray Free-Electron Laser)

17:00 Critical slippage effects in laser-plasma-accelerator-driven free-electron lasers* - Henry Freund (University of Maryland, College Park)

17:00 Structured X-rays from structured light via ICS - Nicholas Matlis (Arizona State University)

17:00 Harmonic lasing self-seeded FEL in a RAFEL cavity with multilayer mirrors - Paris Franz (xLight)

17:00 Characteristics of SSMB Radiation - Xiujie Deng (Tsinghua University)

17:00 Imaging the valence electron density in crystalline materials using X-ray Optical Mixing - Chance Ornelas-Skarin (Stanford University)

17:00 Core-Hole Attosecond Electronic Coherence in Molecular Systems - Federico Vismarra (SLAC National Accelerator Laboratory)

17:00 Attosecond metrology of a seeded free electron laser - John Walters (Stanford University)

17:00 Nanoscale Ultrafast Lattice Modulation with Hard X-ray Free Electron Laser - Haoyuan Li (Linac Coherent Light Source)

17:00 100-nm focusing of 100 eV XFEL pulses at SACLA BL1 using high-NA mirror optics - Yu NAKATA (The University of Tokyo, RIKEN SPring-8 Center)

17:00 The development of time-resolved nonlinear XUV/soft X-ray spectroscopy in SACLA BL1 - XINGYU SU (The University of Tokyo)

17:00 Single-Shot Echo-Type IXS for Self-Seeded and Cavity-Based XFELs - Yuri Shvyd'ko (Argonne National Laboratory)

17:00 A Digital Twin Framework for Optimization of Compact X-ray Light Source - Adil Ansari (Arizona State University)

17:00 Development of a Magnetic Measurement Test Stand for LCLS-II-HE Undulator Pre-Tuning - Johann Eduardo Baader (SLAC National Accelerator Laboratory)

17:00 Measurements of Vertical Polarization in the Second Harmonic of Planar Undulator Radiation - Csaba Nemeth (SLAC National Accelerator Laboratory)

17:00 Compact High-Repetition-Rate EUV to Soft X-Ray Free Electron Laser - Ji Qiang (Lawrence Berkeley National Laboratory)

17:00 A Compact 13.5-nm LPA-Driven FEL Based on a 6-m Integrated-Focusing FNAPU - Maofei Qian (Argonne National Laboratory)

17:00 2. CXLS Early Science and the Path Toward a Compact Coherent X-ray FEL - Nicholas Matlis (Arizona State University)

17:00 Modal and Vlasov Descriptions of EEHG FEL - Pardis Niknejadi (Deutsches Elektronen-Synchrotron DESY)

17:00 Probing ultrafast heating and ionization dynamics in solid density plasmas with time-resolved resonant X-ray absorption and emission - Lingen Huang (Helmholtz-Zentrum Dresden-Rossendorf)

17:00 Biological Effects of Mid-Infrared Free-Electron Lasers: Electroretinograms from Compound Eyes of Two Arthropod Species - Fumio Shishikura (Nihon University)

17:00 Status of development of an x-ray laser oscillator based on population inversion pumped by the LCLS-II-HE free electron laser - Aliaksei Halavanau (SLAC National Accelerator Laboratory) Claudio Pellegrini (SLAC National Accelerator Laboratory)

17:00 Undulator Tapering for Phase Synchronization Recovery in Energy-Compressed LWFA-Driven FELs - Wei-Yuan Chiang (National Synchrotron Radiation Research Center)

17:00 Experimental generation of attosecond soft and hard X-ray pulses with photocathode shaping at SwissFEL - Zhaoheng Guo (École Polytechnique Fédérale de Lausanne, Paul Scherrer Institute)

17:00 Programmable Phase Fronts for Tunable Electron Beam Interactions Using Silicon Photonics - Melanie Murillo (Stanford University)

17:00 Concept for a future light source toward coherent agile X-ray pulse generation - Philippe Piot (Argonne National Laboratory)

17:00 Experimental Design and First Results from the Plasma-Driven Attosecond X-Ray Experiment at FACET-II - Rafi Hessami (SLAC National Accelerator Laboratory)

17:00 Programmable Photoinjector Laser Shaping for Structured X-ray Pulse Generation at LCLS-II - Jack Hirschman (Stanford University, SLAC National Accelerator Laboratory)

17:00 Cascaded Electron Accelerator with Terahertz Pulses - Zoltán Tibai (University of Pecs)

17:00 Plasma-based compression of electron beams - Kelly Swanson (SLAC National Accelerator Laboratory)

17:00 Spatially Resolved Spectral Diagnostics for Temporally Separated OAM Pulse Pairs with Different Topological Charges - Jenny Morgan (SLAC National Accelerator Laboratory)

17:00 Analysis of two color FEL operation at BL3 at SACLA - Liubov Samoylova (European X-Ray Free-Electron Laser)

17:00 AURA - The Most Compact Broadband FTIR Spectrometer (3–600 µm) for IR-FEL and Laser Diagnostics - Ekaterina Jung (WAIV FTIR GmbH)

17:00 Self-seeded x-ray mixer for attosecond pulse metrology - Federico Vismarra (SLAC National Accelerator Laboratory)

17:00 Ultrafast Resonant Single-Particle Imaging with Attosecond XFEL Pulses - Hankai Zhang (École Polytechnique Fédérale de Lausanne, Paul Scherrer Institute)

17:00 Force-Neutral Adjustable Phase Undulators - Nathan Burger (RadiaBeam Technologies (United States))

17:00 Commissioning of X-ray optics and diagnostics for CBXFEL at LCLS - Mario Balcazar (SLAC National Accelerator Laboratory)
Thursday, 27 August 2026
08:30 Electron Sources (Invited)
08:30 - 09:30
Contributions

08:30 LCLS-II injector operational performance and challenges - Feng Zhou (SLAC National Accelerator Laboratory)

09:00 Sub-GV/m gradient in Short-Pulse X-Band Photogun: From First Demonstration to Recent Results and Future Developments - Gongxiaohui Chen (Argonne National Laboratory)
09:30 Electron Sources (Contributed)
09:30 - 10:10
Contributions

09:30 An alternative method to generate CW electron beams for Hard X-ray FEL - Nikhil Bachhawat (Stony Brook University)

09:50 Upstream Photocathode Laser Tailoring for Optimized Longitudinal Phase Space in High-Brightness FELs - HAO ZHANG (University of California, Los Angeles)
10:30 Electron Diagnostics, Timing, Synchronization, and Controls (Invited)
10:30 - 11:30
Contributions

10:30 Transverse Electron Beam Size Diagnostics Based on Synchrotron Radiation - Andrei Trebushinin (European X-Ray Free-Electron Laser)

11:00 Absolute characterization of sub-femtosecond electron bunches in SwissFEL using a Bunch-Compressor-Monitor - Gian Luca Orlandi (Paul Scherrer Institute)
11:30 Electron Diagnostics, Timing, Synchronization, and Controls (Contributed)
11:30 - 12:10
Contributions

11:30 Evaluation of the synchronized operation between the infrared free-electron laser and fiber-laser by measuring the balanced cross-correlation via sum-frequency generation - Keigo Kawase (National Institutes for Quantum Science and Technology)

11:50 Design of a Compact Photoconductive Antenna for Direct Femtosecond-Micron Measurement of 3D Space-Charge Fields - Sean OTool (Stanford University)
Friday, 28 August 2026
08:30 Novel Accelerator and FEL Concepts (Invited)
08:30 - 10:10
Contributions

08:30 Greater than 1000-fold Gain in a Free-Electron Laser Driven by a Laser-Plasma Accelerator with High Reliability - Samuel Barber (Lawrence Berkeley National Laboratory)

08:55 Numerical evaluation of FEL instability in the Plasma Discharge Undulator - Andrea Frazzitta (Paul Scherrer Institute)

09:20 Development and Optimization of LWFA Electron Beams for XUV FEL Generation - YANJUN GU (The University of Osaka)

09:45 Saturated Soft X-ray FEL based on a hollow plasma channel - Fei Li (Institute of High Energy Physics)
10:30 Advanced FEL Modes (Invited)
10:30 - 11:30
Contributions

10:30 Demonstration of Mode-Locked Frequency Comb for an X-Ray Free-Electron Laser - Wenxiang Hu (Paul Scherrer Institute, ETH Zurich)

11:00 Recent progress in attosecond X-ray free-electron lasers: direct observation for hard X-rays, high repetition rates, and spectrotemporal shaping - River Robles (Stanford University)
11:30 Advanced FEL Modes (Contributed)
11:30 - 12:10
Contributions

11:30 Generation and Diagnostics of OAM Beams at the Shanghai Soft X-ray Free-Electron Laser Facility - Yin Kang (Shanghai Advanced Research Institute, Chinese Academy of Sciences)

11:50 Tunable Phase-Locked Hard-X-Ray Pulse Pairs from a Cavity-Based Free-Electron Laser - Jingyi Tang (Stanford University)