Author: Chou, M.C.
Paper Title Page
THPRO048 Emittance and Bunch Length Measurement of the Electron Beams from the NSRRC Photocathode Gun 2974
 
  • A.P. Lee, M.C. Chou, N.Y. Huang, J.-Y. Hwang, W.K. Lau, C.C. Liang
    NSRRC, Hsinchu, Taiwan
  • P. Chiu, P. Wang
    NTHU, Hsinchu, Taiwan
  • Y. Hao
    BNL, Upton, Long Island, New York, USA
 
  A high brightness photo-injector is under development for single pass FEL research at NSRRC. The gun test facility (GTF) equipped with a photocathode rf gun a compensation solenoid, a S-band high power pulse klystron as well as a UV driver laser has been constructed for testing the photocathode rf gun. The gun is fabricated in house and being tested at the GTF. Since the transverse emittance is a key property of the electron beam from the rf gun, multi-slit method is used to characterize the transverse emittance of the electron beam. Another key property of the electron beam is bunch length. An S-band three-cell deflecting cavity is designed to measure the bunch length. The setup and results of emittance measurement as well as the structure design of the deflecting cavity is reported in this contribution.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO048  
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THPRO050 Study of a THz/VUV Free Electron Laser Facility in Taiwan 2980
 
  • N.Y. Huang, M.C. Chou, C.-S. Hwang, W.K. Lau, A.P. Lee
    NSRRC, Hsinchu, Taiwan
  • A. Chao, J. Wu
    SLAC, Menlo Park, California, USA
  • C.H. Chen, Y.-C. Huang
    NTHU, Hsinchu, Taiwan
  • X.M. Yang
    DICP, Dalian, People's Republic of China
 
  A free electron laser (FEL) facility aimed for VUV and THz radiation is being studied at National Synchrotron Radiation Research Center (NSRRC) in Taiwan. Strong consideration has been given to minimize the cost by making maximum use of existing hardware at NSRRC. One unique consideration is to use an existing undulator for the dual functions of the THz radiator and the modulator of a HGHG section. Design emphasizes versatility of operation and beam quality control and compensation of nonlinearities, with a vision that it will allow as much as possible future upgrades as well as later R&D of FEL physics. The polarization control of the THz radiation provides novel application for the users. The facility is to be housed in the existing 38-m by 5-m tunnel of the TPS Linac Test Laboratory.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO050  
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