Calculating of Coupling Factor for the Heterogeneous Part of Accelerating Structure

BIAN Xiao-Hao; CHEN Huai-Bi; ZHENG Shu-Xin

Chinese Physics C> 2006, Vol. 30> Issue(1) : 62-65

Calculating of Coupling Factor for the Heterogeneous Part of Accelerating Structure

Department of Engineering Physics,Tsinghua University,Beijing 100084,China

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Abstract：
The converging part of electron accelerator is designed to converge the phase of injecting electrons, improving the beam quality of the accelerator. It is very crucial to calculate the coupling factor between cavities and to design the geometry structure of the coupling irises. By the E module of code MAFIA, we calculate the frequency of every single resonant cavity and the two eigenfrequencies of two-cavitiy line. Then we get the coupling factor between the two cavities.This method can be used to design the geometry structure of the coupling irises between every two cavities. Compared to experiment, the results of the method is very accurate.

References

[1]

. LIN Yu-Zheng. Theory of Low Energy Linear Electron Ac-celerators. Beijing: Engineering Physics of Tsinghua Uni-versity, 1999(in Chinese)(林郁正.低能电子直线加速器原理.北京:清华大学上程物理系,1999)2. BIAN Xiao-Hao et al. HEP NP, 2005, 29: 90(in Chinese)(边晓浩等.高能物理与核物理,2005, 29: 900)3. SHI Jia-Ru et al. HEP NP, 2005, 29: 818(in Chinese)(施嘉儒等.高能物理与核物理,2005, 29: 818)4. LIU An-Dong. Master Thesis, Engineering Physics of Ts-inghua University, 1980(in Chinese)(刘安东.硕士毕业论文,清华大学上程物理系,1980)

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BIAN Xiao-Hao, CHEN Huai-Bi and ZHENG Shu-Xin. Calculating of Coupling Factor for the Heterogeneous Part of Accelerating Structure[J]. Chinese Physics C, 2006, 30(1): 62-65.

BIAN Xiao-Hao, CHEN Huai-Bi and ZHENG Shu-Xin. Calculating of Coupling Factor for the Heterogeneous Part of Accelerating Structure[J]. Chinese Physics C, 2006, 30(1): 62-65. shu

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Received: 2005-04-14
Revised: 2005-06-07

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