Workshop on Frontiers in Ultrafast Scattering of Electrons

Session

Electron Sources & Beam Optics

2B

28 Aug 2025, 11:00

48/1-112A/B/C/D - Redwood Rooms (SLAC)

Conveners

Electron Sources & Beam Optics

• Fuhao Ji (SLAC)

16. Pushing the limits of Ultrafast Electron Diffraction and Imaging at Tsinghua University

Renkai Li (Tsinghua University)

28/08/2025, 11:00

17. Novel Cathodes for Dark Current Mitigation in LCLS-II Injector Gun

Tianhuan Luo (Lawrence Berkeley National Laboratory)

28/08/2025, 11:30

High rep-rate SRF-Linac based XFEL like LCLS-II has a stringent requirement on the limit of the dark current from the injector RF gun. In this talk, we will present our recent work on mitigating the LCLS-II gun dark current by re-designing the photo cathode.  New cathode plugs with ~1mm insertion have been designed, manufactured and commissioned at LCLS-II. They successfully reduce the gun...

18. C-band high-gradient photoinjector R&D at LANL CARIE facility

Haoran Xu (Los Alamos National Laboratory)

28/08/2025, 12:00

Two high-gradient 1.6-cell normal-conducting RF photoinjectors at C-band were designed for operation at the Cathodes And Radiofrequency Interaction in Extremes (CARIE) facility at Los Alamos National Laboratory (LANL). The first photoinjector cavity uses a planar copper cathode and has been fabricated and tuned at low power. The second photoinjector cavity was designed for using INFN-style...

19. Design of the RUEDI ultrafast electron diffraction beamline at Daresbury Laboratory

Ben Hounsell (STFC UKRI)

28/08/2025, 12:30

RUEDI (Relativistic Ultrafast Diffraction and Imaging) is a planned UK national user facility. It has a diffraction beamline optimised for temporal resolution. This beamline uses an S-band normal conducting RF gun followed by a triple bend achromat magnetic compressor which simultaneously compresses the bunch and suppresses the time of arrival jitter to the 10 fs scale. The compressor has...