Calculating RF Parameters of Individual Cell by Electronic Field Distribution of a Coupled Cavity Chain

SHI Jia-Ru; ZHENG Shu-Xin; CHEN Huai-Bi; TANG Chuan-Xiang

Chinese Physics C> 2005, Vol. 29> Issue(8) : 818-823

Calculating RF Parameters of Individual Cell by Electronic Field Distribution of a Coupled Cavity Chain

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

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Abstract：
Electric field distribution of a coupled cavity chain is used to calculate RF Parameters of individual cell in the chain. When the characteristic frequencies of a coupled cavity chain and the electric field distribution of each mode are known, by equivalent circuit model, one can solve the RF parameters of each individual cell and the coupling factors between them. This method is useful in designing and tuning a cavity chain of a linear accelerator, especially a non-periodic long structure. A description of the mathematical model and calculating experience are presented.

References

[1]

. Haebel E, Tuckmantel J. Tuning of a Superconduct ing Accelerating Cavity Under Operating Condit ions: CERN/ EF/ RF81-5. 19812. Sekutowicz J, CHEN Ying-Hua, WEI Yi-Xiang. A Different Tuning Method for Accelerating Cavities. In: Proceedings of the Fourth Work-shop on RF Superconductivity KEK. Japan, 1989. 8493. Sekutowicz J . Frequency Dependent Capacitive-Inductive Model for Axially Coupled π/ 2 St anding Wave Biperiodic Structure. IEEE Transactions on Nuclear Science, 1985, NS32: 28544. Nagel D E, Knapp E A, Knapp B C. Coupled Resonant Model for Standing Wave Accelerator Tanks. Review of Scientific Instruments,1967., 38( 11) : 1583

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SHI Jia-Ru, ZHENG Shu-Xin, CHEN Huai-Bi and TANG Chuan-Xiang. Calculating RF Parameters of Individual Cell by Electronic Field Distribution of a Coupled Cavity Chain[J]. Chinese Physics C, 2005, 29(8): 818-823.

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Received: 2004-10-29
Revised: 1900-01-01

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