• High Power Laser and Particle Beams
  • Vol. 34, Issue 10, 104013 (2022)
Kui Zhou, Peng Li, Zheng Zhou, Dexin Xiao, Jianxin Wang, Hanbin Wang, Xing Luo, Lijun Shan, Xuming Shen, Tianhui He, Chenglong Lao, Longgang Yan, Yong Xu, Peng Zhang, Lijun Chen, Weijun Wang, Yu Liu, Jie Liu, Xingfan Yang, Dai Wu*, and Ming Li*
Author Affiliations
  • Institute of Applied Electronics, CAEP, Mianyang 621900, China
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    DOI: 10.11884/HPLPB202234.220091 Cite this Article
    Kui Zhou, Peng Li, Zheng Zhou, Dexin Xiao, Jianxin Wang, Hanbin Wang, Xing Luo, Lijun Shan, Xuming Shen, Tianhui He, Chenglong Lao, Longgang Yan, Yong Xu, Peng Zhang, Lijun Chen, Weijun Wang, Yu Liu, Jie Liu, Xingfan Yang, Dai Wu, Ming Li. Status and upgrade plan of CAEP THz-FEL facility[J]. High Power Laser and Particle Beams, 2022, 34(10): 104013 Copy Citation Text show less
    Beam line layout diagram of CTFEL facility
    Fig. 1. Beam line layout diagram of CTFEL facility
    Schematic diagram of CTFEL facility
    Fig. 2. Schematic diagram of CTFEL facility
    Schematic diagram of the structure of the HV-DC electron gun
    Fig. 3. Schematic diagram of the structure of the HV-DC electron gun
    Measurement results of THz polarization and beam size
    Fig. 4. Measurement results of THz polarization and beam size
    Measurement results of THz polarization and beam size
    Fig. 5. Measurement results of THz polarization and beam size
    Beam line layout diagram of the IR-THz FEL facility
    Fig. 6. Beam line layout diagram of the IR-THz FEL facility
    Layout of the user stations of the IR-THz FEL facility
    Fig. 7. Layout of the user stations of the IR-THz FEL facility
    injector parametervalueSRF accelerator parametervalueundulator parametervalue
    laser wavelength/nm532working frequency/GHz1.3number of periods42
    repetition rate/MHz54.167working temperature/K2period length/mm38
    gun voltage/kV320effective field gradient/(MV/m)10gap range/mm18~32
    bunch length/ps~12amplitude stability0.03%optical cavity length/mm2769
    beam current/mA1~5phase stability/(°)0.06curvature radius/mm2218
    Table 1. System parameters of CTFEL facility
    parametersvalues
    THz FEL frequency range/THz0.67~4.2
    bandwidth/%~2
    macro-pulse average power/W10~60
    macro-pulse repetition rate/Hz1/5/10/20
    macro-pulse length/ms0.3~8
    micro-pulse length/ps<10
    micro-pulse repetition rate/MHz54.17
    peak power/MW>0.1
    minimum beam size/mm<1
    polarization direction/%>99 (horizontal)
    super-radiation frequency range/THz0.1~0.7
    super-radiation electric field/(MV/cm)~1
    Table 2. THz parameters of CTFEL facility
    electron beamsIR-THz FEL
    maximum energy/MeV50frequency range/THz0.1~125
    energy spread/%<0.3 (FWHM)wavelength range/µm2.4~3000
    normalized emittance @100 pC/µm<15pulse length/ps0.5~20
    bunch charge/pC50~100maximum macro-pulse power/W>100
    Table 3. Design parameters of the IR-THz FEL facility
    Kui Zhou, Peng Li, Zheng Zhou, Dexin Xiao, Jianxin Wang, Hanbin Wang, Xing Luo, Lijun Shan, Xuming Shen, Tianhui He, Chenglong Lao, Longgang Yan, Yong Xu, Peng Zhang, Lijun Chen, Weijun Wang, Yu Liu, Jie Liu, Xingfan Yang, Dai Wu, Ming Li. Status and upgrade plan of CAEP THz-FEL facility[J]. High Power Laser and Particle Beams, 2022, 34(10): 104013
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