IPAC'25 - the 16th International Particle Accelerator Conferece

Longitudinal phase space measurement using a corrugated structure at the PAL-XFEL

THPS101

5 Jun 2025, 15:30

2h

Exhibiton Hall A _Salmon (TWTC)

Poster Presentation MC6.T03 Beam Diagnostics and Instrumentation Thursday Poster Session

Speaker

MyungHoon Cho (Pohang Accelerator Laboratory)

Description

We present the experimental results of the longitudinal phase space (LPS) measurement using a corrugated structure at Pohang Accelerator Laboratory X-ray Free-Electron Laser (PAL-XFEL). The electron beam, passing the corrugated structure, generates the wakefield, which streaks the beam horizontally. The dipole magnet following the corrugated structure disperses the streaked beam vertically. By analyzing the transverse distribution observed at the screen monitor after those components, the electron beam LPS can be characterized. The LPS after the FEL process can also provide the FEL temporal profile, which is the valuable information for the accelerator optimization as well as the user experiments. In this paper, we present the preliminary experimental results for the characterization of the electron beam LPS and FEL profile.