Digital self-excited vertical test system of superconducting cavity

Yang Jisen; Pan Weimin; Wang Honglei; Liu Jiaji; Wang Muyuan; Zhou Quan; He Feisi; Sha Peng; Lin Haiying; Wang Qunyao; Wang Guangwei; Mi Zhenghui

doi:10.11884/HPLPB202032.190320

Volume 32 Issue 4

Mar. 2020

Turn off MathJax

Article Contents

Article Navigation > High Power Laser and Particle Beams > 2020 > 32(4): 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. doi: 10.11884/HPLPB202032.190320

Citation:

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. doi: 10.11884/HPLPB202032.190320

Citation:

PDF( 1017 KB)

Digital self-excited vertical test system of superconducting cavity

doi: 10.11884/HPLPB202032.190320

Yang Jisen^{1, 2, 3, 4
,},
Pan Weimin^{1, 2, 3, 4},
Wang Honglei^{1, 2, 3, 4},
Liu Jiaji^{1, 2, 3},
Wang Muyuan^{1, 3, 4},
Zhou Quan^{1, 2, 3, 4},
He Feisi^{1, 3, 4},
Sha Peng^{1, 3, 4},
Lin Haiying^{1, 3, 4},
Wang Qunyao^{1, 3, 4},
Wang Guangwei^{1, 3, 4},
Mi Zhenghui^{1, 3, 4
,
,}

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Key Laboratory of Particle Acceleration Physics and Technology, Chinese Academy of Sciences, Beijing 100049, China
4.
Center for Superconducting RF and Cryogenics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2019-08-28
Rev Recd Date: 2019-12-12
Publish Date: 2020-03-06

Abstract

Abstract

Vertical test is an important method for characterizing the performance of superconducting cavities. We designed an superconducting cavity vertical test system based on digital self-excited algorithm and the technology of low-level radio frequency, which could improve the vertical test efficiency of superconducting cavities. The RF front-end and clock distribution system of the vertical test system adopts the second up-and-down conversion scheme. To some extent, the working frequency of the digital self-excited loop of the vertical test system can be set flexibly, and the working bandwidth of the test system is increased. The test results of the pass-band frequency of the 1.3 GHz 9-cell superconducting cavity show that the vertical test system has strong frequency resolution (＜800 kHz) to ensure the smooth progress of the multi-cell superconducting cavity pass-band test.
- superconducting cavity,
- vertical test,
- digital self-excited loop,
- second up-and-down frequency conversion,
- digital low level radio frequency

FullText(HTML)

References(12)

References

[1]	Powers T. Theory and practice of cavity RF test system[C]//Proceedings of the 12^th International Workshop on RF Superconductivity. 2005: 40-70.
[2]	Delayen J R. Phase and amplitude stabilization of superconducting resonators[D]. California: California Institute of Technology, 1978: 1-16.
[3]	Allison T, Delayen J R, Hovater C, et al. A digital self excited loop for accelerating cavity field control[C]//Proceedings of PAC07. 2007: 2481-2483.
[4]	Goryashko V A, Bhattacharyya A K, Li Han, et al. A method for high-precision characterization of the Q-slope of superconducting RF cavities[J]. IEEE Transactions on Microwave Theory and Techniques, 2016, 64(11): 3764-3771. doi: 10.1109/TMTT.2016.2605671
[5]	Nicander H. Electro-acoustic stability of a superconducting spoke cavity[D]. Sweden: Uppsala University, 2015: 31-37.
[6]	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
[7]	常玮. 低beta超导腔体的测试研究[D]. 兰州: 中国科学院近代物理研究所, 2014: 62-68. Chang Wei. Research on low beta superconducting cavity testing[D]. Lanzhou: Institute of Modern Physics, Chinese Academy of Sciences, 2014: 62-68
[8]	邱丰. 1.3 GHz 9-cell腔数字化低电平系统的研究[D]. 北京: 中国科学院高能物理研究所, 2012: 76-77. Qiu Feng. Study on the digital low level RF control system of 1.3 GHz nine-cell cavity[D]. Beijing: Institute of High Energy Physics, Chinese Academy of Sciences, 2012: 76-77
[9]	张志刚. 同步辐射光源增强其高频数字化低电平系统研制[D]. 上海: 中国科学院上海应用物理研究所, 2015: 68-72. Zhang Zhigang. Development of digital low level RF system for booster at Synchrotron Radiation Light Source[D]. Shanghai: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 2015: 68-72
[10]	Holzbauer J P, Pischalnikov Y, Sergatskov D A, et al. Systematic uncertainties in RF-based measurement of superconducting cavity quality factors[J]. Nuclear Instruments and Methods in Physics Research A, 2016, 830: 22-29. doi: 10.1016/j.nima.2016.05.025
[11]	Holzbauer J P, Contreras C, Pischalnikov Y, et al. Improved RF measurements of SRF cavity quality factors[J]. Nuclear Instruments and Methods in Physics Research A, 2019, 913: 7-14. doi: 10.1016/j.nima.2018.09.155
[12]	刘亚萍. BEPCII 500 MHz 铌腔的研制[D]. 北京: 中国科学院高能物理研究所, 2011: 94-95. Liu Yaping. Study of BEPCII 500 MHz niobium cavity[D]. Beijing: Institute of High Energy Physics, Chinese Academy of Sciences, 2011: 94-95