[1] Aghababyan A, Altarelli M, Altucci C, et al. XFEL: The European X-ray free-electron laser — technical design report[M]. Germany: DESY XFEL Project Group. 2006.
[2] Galayda J N. LCLS-II: A high power upgrade to the LCLS[C] //Proc of IPAC. 2018: 18-23.
[3] Zhu zhiyuan, Zhao Zhentang, Wang Dong, et al. SCLF: an 8-GeV CW SCRF linac-based X-ray FEL facility in Shanghai[C] //Proc of FEL. 2017: 182-184.
[4] Kostin D, Möller W D, Sekutowicz J, et al. Tesla type 9-cell cavities continuous wave tests[C]//Proc of SRF. 2009: 338-341.
[5] Allison T, Delayen J R, Hovater C, et al. A digital self excited loop for accelerating cavity field control[C]//Proc of PAC. 2007: 2481-2483.
[6] Ben-Zvi I. SRF cavity testing using a FPGA self excited loop[OL]. https://cds.cern.ch/record/2320432.
[7] 侯洪涛. 500 MHz 单cell 超导高频腔测试技术研究[D]. 上海: 中国科学院上海应用物理研究所, 2010: 63-64.

Hou Hongtao. Study on testing of 500 MHz single cell superconducting radio frequency cavities[D]. Shanghai: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 2010: 63-64
[8] Chang Wei, He Yuan, Wen Lianghua, et al. A vertical test system for China-ADS project injector superconducting cavities[J]. Chinese Physics C, 2014, 38: 057001. doi: 10.1088/1674-1137/38/5/057001
[9] 张娟, 戴建枰, 黄泓, 等. 基于Labview 的超导腔测试数据采集系统[J]. 核电子学与探测技术, 2013, 33(9):1098-1103. (Zhang Juan, Dai Jianping, Huang Hong, et al. Data acquisition system of superconducting cavity test based on Labview[J]. Nuclear Electronics & Detection Technology, 2013, 33(9): 1098-1103 doi: 10.3969/j.issn.0258-0934.2013.09.014
[10] 杨际森, 潘卫民, 王洪磊, 等. 超导腔数字自激垂直测试系统[J]. 强激光与粒子束, 2020, 32:045106. (Yang Jisen, Pan Weimin, Wang Honglei, et al. Digital self-excited vertical test system of superconducting cavity[J]. High Power Laser and Particle Beams, 2020, 32: 045106
[11] Liu Rong, Wang Zheng, Pan Weimin, et al. FPGA-based amplitude and phase detection in DLLRF[J]. Chinese Physics C, 2009, 33(7): 594-598. doi: 10.1088/1674-1137/33/7/017