Workshop on Frontiers in Ultrafast Scattering of Electrons

Session

Supporting Technologies & Diagnostics

2C

Aug 28, 2025, 2:30 PM

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

Conveners

Supporting Technologies & Diagnostics

• Cameron Duncan (SLAC)

23. Towards programmable XFELs: linking adaptable photoinjector laser shaping to tailored X-ray production

Sergio Carbajo (UCLA)

8/28/25, 2:30 PM

LCLS-II is advancing attosecond X-ray science by optimizing electron beam generation at the photoinjector through tailored UV laser pulses. We introduce a novel method combining IR spectral shaping and dispersion-controlled nonlinear upconversion to produce customizable UV profiles (e.g., flattop, multi-spike). Preliminary LCLS-II experiments confirm these modulations effectively perturb...

24. Direct electron detectors for robust structural characterization with four-dimensional STEM

Steven Zeltmann (Cornell)

8/28/25, 3:00 PM

Four-dimensional scanning transmission electron microscopy, where the full forward scattering distribution of the electron beam is recorded by a 2D pixelated detector at each position in a scan, provides a wealth (a deluge?) of information about the sample. Detectors with high dynamic range enable quantitative analysis of the diffraction data, and their high speed (10-100k fps) allows us to...

25. Advanced THz structures for accelerator timing diagnostics

Mohamed Othman (SLAC)

8/28/25, 3:30 PM

Recent advances in THz acceleration have shown promise for manipulation of mega-electron volt scale electron bunches with high efficiency and small footprint. Over the years we have established various new techniques for THz-driven pulse compression and timing diagnostics utilizing single and dual-fed THz compressor structures to enable much shorter electron pulses and simultaneously improve...

26. Versatile Photoelectron Sources for Ultra-low Intrinsic Emittance Electron Beams

Michael Kaemingk (Los Alamos National Laboratory)

8/28/25, 4:00 PM

Laser technologies for generating sub-picosecond pulses at different wavelengths have propelled photocathodes to the forefront of electron sources. By leveraging nanofabrication techniques, photocathode research now promises to deliver sources for beams with sub-micron transverse dimensions and sub-nanometer emittances. The techniques for fabricating these sources are versatile, allowing them...