Simulation of transverse field sweeping system for a MW-class gyrotron with single-stage depressed collector
Received:January 22, 2019  Revised:May 27, 2019  download
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Author NameAffiliationE-mail
WANG Kai Key Laboratory of High Power Microwave sources and Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100049, China 
wangkai164@mails.ucas.ac.cn 
XUE Qian-Zhong Key Laboratory of High Power Microwave sources and Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100049, China 
qianzhong_xue@mail.ie.ac.cn 
ZHANG Shan Key Laboratory of High Power Microwave sources and Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100049, China 
 
ZHAO Ding Key Laboratory of High Power Microwave sources and Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China  
ZHANG Lian-Zheng Key Laboratory of High Power Microwave sources and Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China  
Abstract:The simulation of transverse field sweeping system (TFSS) for a 170 GHz, MW-class gyrotron with single-stage depressed collector (SDC) is presented in this paper. The adoption of SDC aims to recover part residual kinetic energy of spent electrons as well as to improve total efficiency exceeding 55%. Transverse field sweeping system is coming into use to expand the spent electron trajectory length to 1100 mm to keep the specific heat dissipation on the collector surface within technically acceptable limits. Furthermore the modulation depth of sweeping signal and the number of transverse coils are simulated to get an optimal result 38.9% and 6 leading to an acceptable peak averaged power density . In order to ensure the safety and feasibility in actual situation, the cooling system with axial groves for collector is also designed and the thermal and fluid analysis are carried out by commercial available software ANSYS. The maximum temperature of inner and outer collector surface are and respectively. The range of water temperature at the inlet and outlet are and respectively.
keywords:gyrotron  single-stage depressed collector  transverse field sweeping system  thermal and fluid analysis
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Copyright:《Journal of Infrared And Millimeter Waves》