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中物院太赫兹自由电子激光装置现状及升级计划

周奎 李鹏 周征 肖德鑫 王建新 王汉斌 罗星 单李军 沈旭明 和天慧 劳成龙 闫陇刚 徐勇 张鹏 陈立均 王伟俊 刘宇 刘婕 杨兴繁 吴岱 黎明

周奎, 李鹏, 周征, 等. 中物院太赫兹自由电子激光装置现状及升级计划[J]. 强激光与粒子束. doi: 10.11884/HPLPB202234.220091
引用本文: 周奎, 李鹏, 周征, 等. 中物院太赫兹自由电子激光装置现状及升级计划[J]. 强激光与粒子束. doi: 10.11884/HPLPB202234.220091
Zhou Kui, Li Peng, Zhou Zheng, et al. Status and upgrade plan of CAEP THz-FEL facility[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202234.220091
Citation: Zhou Kui, Li Peng, Zhou Zheng, et al. Status and upgrade plan of CAEP THz-FEL facility[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202234.220091

中物院太赫兹自由电子激光装置现状及升级计划

doi: 10.11884/HPLPB202234.220091
基金项目: 国家重大科学仪器设备开发专项(2011YQ130018);国家自然科学基金项目(12005211,11905210,11975218);中物院创新发展基金创新项目(CX20210046)
详细信息
    作者简介:

    周奎:周 奎,zhoudakui@163.com

    通讯作者:

    吴 岱,wudai04@163.com

    黎 明,liming@caep.cn

  • 中图分类号: TN248.6

Status and upgrade plan of CAEP THz-FEL facility

  • 摘要: 中国工程物理研究院太赫兹自由电子激光装置(CAEP THz FEL, CTFEL)是国内唯一运行的基于超导加速器的高平均功率自由电子激光太赫兹源,具有频率连续在线可调(0.1~4.2 THz)、高峰值功率(>0.5 MW)、高平均功率(>10 W)、高重频(54.17 MHz)、短脉冲(~ps)、窄线宽(~2%)、全相干和线性偏振等特点。自2017年出光以来,已稳定运行了四年多,并开展了诸多应用实验研究。为进一步满足用户需求,CTFEL计划升级为一台红外太赫兹自由电子激光装置,电子束能量提升至最大50 MeV,频谱范围拓展至0.1~125 THz,同时,建设材料光谱和生物医学两个实验站。
  • 图  1  CTFEL装置束线布局图

    Figure  1.  Beam line layout diagram of CTFEL facility

    图  2  CTFEL装置示意图

    Figure  2.  Schematic diagram of CTFEL facility

    图  3  直流高压电子枪结构示意图

    Figure  3.  Schematic diagram of the structure of the HV-DC electron gun

    图  4  太赫兹极化度与太赫兹束斑尺寸测量结果

    Figure  4.  Measurement results of THz polarization and beam size

    图  5  太赫兹频谱与太赫兹输出功率测量结果

    Figure  5.  Measurement results of THz polarization and beam size

    图  6  红外太赫兹自由电子激光装置束线布局图

    Figure  6.  Beam line layout diagram of the IR-THz FEL facility

    图  7  红外太赫兹自由电子激光装置用户实验站布局示意图

    Figure  7.  Layout of the user stations of the IR-THz FEL facility

    表  1  CTFEL装置系统参数

    Table  1.   System parameters of CTFEL facility

    injector parametervalueSRF accelerator parametervalueundulator parametervalue
    laser wavelength/nm 532 working frequency/GHz 1.3 number of periods 42
    repetition rate/MHz 54.167 working temperature/K 2 period length/mm 38
    gun voltage/kV 320 effective field gradient/(MV/m) 10 gap range/mm 18~32
    bunch length/ps ~12 amplitude stability 0.03% optical cavity length/mm 2769
    beam current/mA 1~5 phase stability/(°) 0.06 curvature radius/mm 2218
    下载: 导出CSV

    表  2  CTFEL装置太赫兹参数

    Table  2.   THzparameters 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
    下载: 导出CSV

    表  3  红外太赫兹自由电子激光装置设计参数

    Table  3.   Design parameters of the IR-THz FEL facility

    electron beamsIR-THz FEL
    maximum energy/MeV 50 frequency range/THz 0.1~125
    energy spread/% <0.3 (FWHM) wavelength range/µm 2.4~3000
    normalized emittance @100 pC/µm <15 pulse length/ps 0.5~20
    bunch charge/pC 50~100 maximum macro-pulse power/W >100
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-03-29
  • 修回日期:  2022-06-27
  • 网络出版日期:  2022-07-09

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