Stop band characteristics of a TESLA cavity coaxial-type HOM coupler

中国物理C, 2009, 33(5): 401-405.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.Institute of Heavy Ion Physics, Peking University, Beijing 100871,China

2.Institute of Heavy Ion Physics, Peking University, Beijing 100871,China

3.Institute of Heavy Ion Physics, Peking University, Beijing 100871,China

4.KEK:High Energy Accelerator Research Organization, 1-10ho, Tsukuba, Ibaraki 305-0801, Japan

5.KEK:High Energy Accelerator Research Organization, 1-10ho, Tsukuba, Ibaraki 305-0801, Japan

6.Institute of Heavy Ion Physics, Peking University, Beijing 100871,China

基金项目: 国家自然科学基金(10276001)

Stop band characteristics of a TESLA cavity coaxial-type HOM coupler

WANG Er-Dong ^1, , WANG Fang ^2, , ZHANG Bao-Cheng ^3, , S.Noguchi ^4, , K.Watanabe ^5, , ZHAO Kui ^6,

1.Institute of Heavy Ion Physics, Peking University, Beijing 100871,China

2.Institute of Heavy Ion Physics, Peking University, Beijing 100871,China

3.Institute of Heavy Ion Physics, Peking University, Beijing 100871,China

4.KEK:High Energy Accelerator Research Organization, 1-10ho, Tsukuba, Ibaraki 305-0801, Japan

5.KEK:High Energy Accelerator Research Organization, 1-10ho, Tsukuba, Ibaraki 305-0801, Japan

6.Institute of Heavy Ion Physics, Peking University, Beijing 100871,China

Keywords： HOM coupler

A TTF-type coaxial higher order modes (HOM) coupler has been used in a TESLA 9 cell cavity. It is impossible to measure the stop band characteristics of the HOM coupler with the cavity. A measurement device for the coaxial transmission line type for the HOM coupler has been designed at Peking University. Experimentally it was shown that the average voltage standing wave ratio of the coaxial transmission line is smaller than 1.08. The experimental results of the stop band characteristics of the TTF-type HOM coupler have been fitted for the simulation. This paper describes the design of the measurement device and discusses the experimental and simulation results of stop band characteristics of the HOM coupler.

参考文献

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[6]	WANG Gui-MEi;WU Wen-Zhong;LU Xiang-Yang et al.[J].HEP & NP,2006,30(03):242-245.

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Stop band characteristics of a TESLA cavity coaxial-type HOM coupler

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