Study of the Capacitance Coupling in Accelerators

LI Zhi-Hui

Chinese Physics C> 2006, Vol. 30> Issue(7) : 680-683

Study of the Capacitance Coupling in Accelerators

LI Zhi-Hui ^,

Institute of Modern Physics, CAS, Lanzhou 730000, China

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Abstract：
The relation between the input impedance and the characteristic parameters of a cavity, such as the resonance frequency, shunt impedance and the quality factor, has been obtained based on the equivalent circuit of the cavity and the coupling system. Using the matching condition, the ratio of coupling capacitance to the equivalent capacitance of the cavity can be acquired as a function of the characteristic parameters of the cavity, the value of the coupling capacitance can be obtained with a help of a numerical simulation and the perturbation theory, and then the perfect matching between the cavity and the transmission line can be procured. The application of these results on a model cavity is presented too.

References

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LI Zhi-Hui. Study of the Capacitance Coupling in Accelerators[J]. Chinese Physics C, 2006, 30(7): 680-683.

LI Zhi-Hui. Study of the Capacitance Coupling in Accelerators[J]. Chinese Physics C, 2006, 30(7): 680-683. shu

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Received: 2005-11-01
Revised: 2006-04-04

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of the Capacitance Coupling in Accelerators

LI Zhi-Hui ^,

Corresponding author: LI Zhi-Hui,

Institute of Modern Physics, CAS, Lanzhou 730000, China

Received Date: 2005-11-01
Accepted Date: 2006-04-04
Available Online: 2006-07-05

Abstract: The relation between the input impedance and the characteristic parameters of a cavity, such as the resonance frequency, shunt impedance and the quality factor, has been obtained based on the equivalent circuit of the cavity and the coupling system. Using the matching condition, the ratio of coupling capacitance to the equivalent capacitance of the cavity can be acquired as a function of the characteristic parameters of the cavity, the value of the coupling capacitance can be obtained with a help of a numerical simulation and the perturbation theory, and then the perfect matching between the cavity and the transmission line can be procured. The application of these results on a model cavity is presented too.