Design and test of frequency tuner for a CAEP high power THz free-electron laser

MI Zheng-Hui; ZHAO Dan-Yang; SUN Yi; PAN Wei-Min; LIN Hai-Ying; LU Xiang-Yang; QUAN Sheng-Wen; LUO Xing; LI Ming; YANG Xing-Fan; WANG Guang-Wei; DAI Jian-Ping; LI Zhong-Quan; MA Qiang; SHA Peng

doi:10.1088/1674-1137/39/2/028102

Chinese Physics C> 2015, Vol. 39> Issue(2) : 028102 DOI: 10.1088/1674-1137/39/2/028102

Design and test of frequency tuner for a CAEP high power THz free-electron laser

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Abstract：
Peking University is developing a 1.3 GHz superconducting accelerating section highpower THz free-electron laser for the China Academy of Engineering Physics (CAEP). A compact fast/slow tuner has been developed by the Institute of High Energy Physics (IHEP) for the accelerating section to control Lorentz detuning, compensate for beam loading effect, microphonics and liquid helium pressure fluctuations. The tuner design, warm test and cold test of the first prototype are presented, which has a guiding significance for the manufacture of the formal tuner and cryomodule assembly.

References

[1]

XU Zhou, YANG Xing-Fan, LI Ming et al. Journal of Terahertz Science and Electronic Information Technology, 2013, 11(1): 1-6[2] Pischalnikov Y et al. A Tuner For A 325 MHz SRF Spoke Cavity. Proc. SRF, 2009. 675-678[3] MI Zheng-Hui et al. Chin. Phys. C, 2013, 37(8): 087003[4] Padamsee H et al. RF Superconductivity for Accelerator. 2nd edn, 2007. 425-458[5] Yamamoto Y et al. Observation and Numerical Calculation of Lorentz Detuning for The Cryomodule Test of STF Baseline Cavities at KEK-STF. Proc. PAC09. 999-1001[6] MI Zheng-Hui et al. Chin. Phys. C, 2012, 36(10): 996-999

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MI Zheng-Hui, ZHAO Dan-Yang, SUN Yi, PAN Wei-Min, LIN Hai-Ying, LU Xiang-Yang, QUAN Sheng-Wen, LUO Xing, LI Ming, YANG Xing-Fan, WANG Guang-Wei, DAI Jian-Ping, LI Zhong-Quan, MA Qiang and SHA Peng. Design and test of frequency tuner for a CAEP high power THz free-electron laser[J]. Chinese Physics C, 2015, 39(2): 028102. doi: 10.1088/1674-1137/39/2/028102

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Received: 2014-04-16
Revised: 2014-07-14

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沈阳化工大学材料科学与工程学院沈阳 110142

Design and test of frequency tuner for a CAEP high power THz free-electron laser

Corresponding author: MI Zheng-Hui,

Received Date: 2014-04-16
Accepted Date: 2014-07-14
Available Online: 2015-02-05

Abstract: Peking University is developing a 1.3 GHz superconducting accelerating section highpower THz free-electron laser for the China Academy of Engineering Physics (CAEP). A compact fast/slow tuner has been developed by the Institute of High Energy Physics (IHEP) for the accelerating section to control Lorentz detuning, compensate for beam loading effect, microphonics and liquid helium pressure fluctuations. The tuner design, warm test and cold test of the first prototype are presented, which has a guiding significance for the manufacture of the formal tuner and cryomodule assembly.