中国物理B ›› 2018, Vol. 27 ›› Issue (11): 118402-118402.doi: 10.1088/1674-1056/27/11/118402
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
Design and development of radio frequency output window for circular electron-positron collider klystron
Zhijun Lu(陆志军), Shigeki Fukuda, Zusheng Zhou(周祖圣), Shilun Pei(裴士伦), Shengchang Wang(王盛昌), Ouzheng Xiao(肖欧正), UnNisa Zaib, Bowen Bai(白博文), Guoxi Pei(裴国玺), Dong Dong(董东), Ningchuang Zhou(周宁闯), Shaozhe Wang(王少哲), Yunlong Chi(池云龙)
- 1 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
4 High Energy Accelerator Research Organization, KEK, Oho, Ibaraki 305-0801, Japan;
5 GLVAC Industrial Technology Research Institute of High Power Devices, Kunshan 215300, China
Design and development of radio frequency output window for circular electron-positron collider klystron
Zhijun Lu(陆志军)1,2,3, Shigeki Fukuda1,4, Zusheng Zhou(周祖圣)1,3, Shilun Pei(裴士伦)1,3, Shengchang Wang(王盛昌)1,3, Ouzheng Xiao(肖欧正)1,3, UnNisa Zaib1,3, Bowen Bai(白博文)1,2,3, Guoxi Pei(裴国玺)1,3, Dong Dong(董东)1,3, Ningchuang Zhou(周宁闯)1,3, Shaozhe Wang(王少哲)5, Yunlong Chi(池云龙)1,3
- 1 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 Key Laboratory of Particle Acceleration Physics and Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
4 High Energy Accelerator Research Organization, KEK, Oho, Ibaraki 305-0801, Japan;
5 GLVAC Industrial Technology Research Institute of High Power Devices, Kunshan 215300, China
摘要：
This paper presents the first phase of design, analysis, and simulation for the klystron coaxial radio frequency (RF) output window. This study is motivated by 800 kW continuous wave (CW), 650 MHz klystrons for the future plan of circular electron-positron collider (CEPC) project. The RF window which is used in the klystron output section has a function to separate the klystron from the inner vacuum side to the outside, and high RF power propagates through the window with small power dissipation. Therefore, the window is a key component for the high power klystron. However, it is vulnerable to the high thermal stress and multipacting, so this paper presents the window design and analysis for these problems. The microwave design has been performed by using the computer simulation technology (CST) microwave studio and the return loss of the window has been established to be less than-90 dB. The multipacting simulation of the window has been carried out using MultiPac and CST particles studio. Through the multipacting analysis, it is shown that with thin coating of TiN, the multipacting effect has been suppressed effectively on the ceramic surface. The thermal analysis is carried out using ANSYS code and the temperature of alumina ceramic is lower than 310 K with water cooling. The design result successfully meets the requirement of the CEPC 650 MHz klystron. The manufacturing and high power test plan are also described in this paper.
中图分类号: (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))
- 84.40.Fe