Design and test of frequency tuner for a CAEP high power THz free-electron laserSupported by the 500 MHz superconducting cavity electromechanical tuning system (Y190KFEOHD), NSAF (11176003) and National Major Scientific Instrument and Equipment Development projects(2011YQ130018)

• Published in: Chinese physics C Vol. 39; no. 2
• Main Authors: 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
• Format: Journal Article
• Language: English
• Published: Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing 01.02.2015
• Subjects: 1.3 GHz cavity tuner; frequency tuner; THz-FEL
• ISSN: 1674-1137
• DOI: 10.1088/1674-1137/39/2/028102

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.