FEL2026 - 42nd International Free Electron Laser Conference

Session

Electron Diagnostics, Timing, Synchronization, and Controls (Contributed)

THB

27 Aug 2026, 11:30

89. Evaluation of the synchronized operation between the infrared free-electron laser and fiber-laser by measuring the balanced cross-correlation via sum-frequency generation (THB01)

Keigo Kawase (National Institutes for Quantum Science and Technology)

27/08/2026, 11:30

Session 10: Electron Diagnostics, Timing, Synchronization, and Controls

Contributed Oral Presentation

To demonstrate the stabilization of the carrier-to-envelope phase (CEP) of the free-electron laser oscillator via injection seeding, we are developing a fiber-laser-based, passively CEP-stabilized difference-frequency-generation mid-infrared source. The external injection seeding into the FEL requires a synchronized laser pulse with the electron bunch driving the FEL. Thus, we introduce a...

109. Design of a Compact Photoconductive Antenna for Direct Femtosecond-Micron Measurement of 3D Space-Charge Fields (THB02)

Sean OTool (Stanford University)

27/08/2026, 11:50

Session 10: Electron Diagnostics, Timing, Synchronization, and Controls

Contributed Oral Presentation

Accurate characterization of 3D space-charge fields in ultrashort electron beams is crucial for next-generation accelerators. The complex, transient 3D space-charge and CSR fields that ultimately shape and limit high-brightness beams have yet to be directly measured, leaving critical dynamics unobserved. A compact diagnostic for the direct measurement of the field itself thus remains a key...