Name: Workshop on Longitudinal Electron beam Dynamics for coherent light Sources 2026 (LEDS 2026)
Start: 2026-04-14T12:00:00+02:00
End: 2026-04-16T23:30:00+02:00
Location: Helmholtz-Zentrum Berlin für Materialien und Energie GmbH/ BESSY II

Workshop on Longitudinal Electron beam Dynamics for coherent light Sources 2026 (LEDS 2026)

from Tuesday, 14 April 2026 (12:00) to Thursday, 16 April 2026 (23:30)

Monday, 13 April 2026
Tuesday, 14 April 2026

12:15 Arrival: Registration
Registration
12:15 - 13:55
Room: Lecture Hall
13:55 Session 1: Advancements in RF photo-injectors and optimization strategies
Advancements in RF photo-injectors and optimization strategies
13:55 - 16:10
Room: Lecture Hall
Contributions

14:00 Collective and surface charge effects in high-brightness electron bunch production for FCC-ee injector - Anahita Omoumi (CERN)

14:25 Longitudinal emittance improvement by shortening injector laser pulse duration - Roberta Provvedi (PSI)

14:50 Beam dynamics optimization for a higher-brightness photo injector with various photocathode laser pulse shape - Sumaira Zeeshan (DESY-PITZ)

15:15 Balance of bunch compression and emittance preservation for high-brightness X-ray FEL injectors - Can Davut (TENMAK)

15:40 Round Table - Atoosa Meseck (HZB / JGU)
16:10 Coffee Break
Coffee Break
16:10 - 16:35
Room: Lecture Hall
16:35 Session 2: Intrabeam Scattering and Energy Spread in linac-FELs
Intrabeam Scattering and Energy Spread in linac-FELs
16:35 - 18:25
Room: Lecture Hall
Contributions

16:40 Intrabeam Scattering Modelling and Benchmarking - Paula Desiré Valdor (CERN)

17:05 Accurate modelling of intrabeam scattering and its impact on photoinjectors for FELs - Thomas Geoffrey Lucas (PSI)

17:30 Longitudinal phase Space tomography at PITZ - Chris Richard (DESY-PITZ)

17:55 Round Table - Erion Gjonaj (TEMF-TUDa)
Wednesday, 15 April 2026
08:25 Session 3: Compression Schemes
Compression Schemes
08:25 - 10:05
Room: Lecture Hall
Contributions

08:30 Collective effects and beam instabilities at the EuXFEL - Igor Zagorodnov (DESY)

08:55 Comparison of compression schemes in Soft (SXFEL) and Hard (UK-XFEL) X-ray FELs - Adam Dixon (MAX IV)

09:20 Microbunching instability studies at FERMI in the presence of two-stage compression - Giovanni Campri (Elettra)

09:45 Round Table - Peter Williams (STFC)
10:05 Coffee Break
Coffee Break
10:05 - 10:30
Room: Lecture Hall
10:30 Session 4: High energy beam transport
High energy beam transport
10:30 - 12:15
Room: Lecture Hall
Contributions

10:35 Design and optimisation of the UK-XFEL spreader lattice and bunch distribution scheme - Andrew Potter (DLS)

11:00 Microbunching reduction in the spreader switchyard lines of FERMI - Simone Spampinati (Elettra)

11:25 Passive streaker and longitudinal phase-space studies at the EuXFEL - Sergey Tomin (EU-XFEL)

11:50 Round Table - Sara Thorin (MAX IV)
12:15 Lunch
Lunch
12:15 - 13:55
Room: Lecture Hall
13:55 Session 5: fs and sub-fs FEL pulses
fs and sub-fs FEL pulses
13:55 - 16:10
Room: Lecture Hall
Contributions

14:00 Recent results from laser-based bunch shaping at FLASH - Philipp Amstutz (DESY)

14:25 Experimental generation of petawatt peak power electron beams via laser heater shaping at FACET-II - Claudio Emma (SLAC)

14:50 Coherent sub-femtosecond x-ray FEL pulses with low-charge electron beams - Eduard Prat (PSI)

15:15 Attosecond pulse generation and relevant electron beam dynamics at the EuXFEL - Svitozar Serkez (EU-XFEL)

15:40 Round Table - Philippe Piot (ANL)
16:10 Coffee Break
Coffee Break
16:10 - 16:35
Room: Lecture Hall
16:35 Session 6: Advanced electron beam manipulation
Advanced electron beam manipulation
16:35 - 18:25
Room: Lecture Hall
Contributions

16:40 Understanding energy spread evolution through modeling of collective beam dynamics - Giovanni Perosa (EU-XFEL)

17:05 Update on active energy compression of a laser-plasma electron beam - Paul Winkler (DESY)

17:30 SwissFEL’s Planar Dielectric Wakefield Structures for Energy Manipulation - Evan Ericson (EPFL / PSI)

17:55 Round Table - Paolo Craievich (PSI)
19:15 Dinner
Dinner
19:15 - 22:00
Room: Lecture Hall
Thursday, 16 April 2026
08:25 Session 8: Preserving coherence in Storage Ring Light Sources
Preserving coherence in Storage Ring Light Sources
08:25 - 10:05
Room: Lecture Hall
Contributions

08:30 Intrabeam scattering in Simulation and Experiment - William Bergan (BNL)

08:55 Coherent emission from microbunched beams at the Metrology Light Source - Arnold Kruschinski (HZB)

09:20 Preservation of transverse coherence with "crab cavities" in Elettra 2.0 - Simone Di Mitri (Elettra)

09:45 Round Table - Carsten Mai (HZB)
10:05 Coffee Break
Coffee Break
10:05 - 10:35
Room: Lecture Hall
10:35 Round Table: Longitudinal manipulation in Storage Ring Light Sources
Longitudinal manipulation in Storage Ring Light Sources
10:35 - 12:15
Room: Lecture Hall
Contributions

10:35 Semi-analytical code for Transient Beam Loading effects in harmonic RF systems and their mitigation - Ignasi Bellafont (ALBA)

11:00 Experience with normal conducting harmonic cavities at BESSY II - Aleksandr Matveenko (HZB)

11:25 Double- and Triple-RF systems for MAX4U and Commissioning of a 500 MHz Cavity for Bunch Lengthening using Two Higher RF Harmonics - Murilo Barbosa Alves (MAX IV)

11:50 Round Table - Pol Solans (ALBA)
12:15 Lunch
Lunch
12:15 - 14:00
Room: Lecture Hall

14:00 Visit to the MLS: Visit to the MLS
Visit to the MLS
14:00 - 17:00
Room: Lecture Hall

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