23–28 Aug 2026
America/Los_Angeles timezone

Characterization of Energy and Energy Spread of Electron Beams from the High-Brightness Photoinjector at NSRRC

TUP08
25 Aug 2026, 16:00
2h
Poster Presentation Session 10: Electron Diagnostics, Timing, Synchronization, and Controls Tuesday Poster Session

Speaker

Ming-Chang Chou (National Synchrotron Radiation Research Center)

Description

The energy and energy spread of electron beams from the NSRRC photoinjector were studied for the generation of ultrashort bunches using velocity bunching for a superradiant THz source. A dipole-magnet-based spectrometer was employed to measure the beam energy and relative energy spread from the energy-dispersed beam profile observed on a downstream diagnostic screen. To achieve high energy resolution, a dedicated diagnostic beamline consisting of two quadrupole magnets and one dipole magnet was designed and optimized. Beam dynamics in this section were investigated using the IMPACT simulation code to optimize optics settings and evaluate their impact on the measured energy spread. This report presents experimental results on the characterization of the NSRRC photoinjector energy spread, providing a basis for further injector optimization.

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Author

AN PING LEE (National Synchrotron Radiation Research Center)

Co-authors

Chihkai Liu (National Central University) Hsin-Pai Hsueh (National Synchrotron Radiation Research Center) Ming-Chang Chou (National Synchrotron Radiation Research Center) Shan-You Teng (National Central University) Dr Wei-Yuan Chiang (National Synchrotron Radiation Research Center) YICHIEH CHANG (National Synchrotron Radiation Research Center)

Presentation materials

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