Study of the beam loading effect in the CSNS/RCS

YUAN Yao-Shuo; LI Kai-Wei; WANG Na; Yoshiro Irie; WANG Sheng

doi:10.1088/1674-1137/39/4/047003

Chinese Physics C> 2015, Vol. 39> Issue(4) : 047003 DOI: 10.1088/1674-1137/39/4/047003

Study of the beam loading effect in the CSNS/RCS

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Abstract：
The China Spallation Neutron Source/Rapid Cycling Synchrotron (CSNS/RCS) accelerates a high-intensity proton beam from 80 MeV to 1.6 GeV. Since the beam current and beam power is high, the beam loading is a severe problem for the stability of the circulating beam in the RCS. To study the beam loading effect in the CSNS/RCS theoretically, the RLC circuit model of the rf cavity, the method of Fast Fourier Transform and the method of Laplace transform have been employed to obtain the impedance of the rf system, the beam spectrum and the beam-induced voltage, respectively. Based on these physical models, the beam dynamics equations have been revised and a beam loading model has been constructed in the simulation code ORIENT. By using the code, the beam loading effect on the rf system of the CSNS/RCS has been investigated. Some simulation results have been obtained and conclusions have been drawn.

References

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YUAN Yao-Shuo, LI Kai-Wei, WANG Na, Yoshiro Irie and WANG Sheng. Study of the beam loading effect in the CSNS/RCS[J]. Chinese Physics C, 2015, 39(4): 047003. doi: 10.1088/1674-1137/39/4/047003

YUAN Yao-Shuo, LI Kai-Wei, WANG Na, Yoshiro Irie and WANG Sheng. Study of the beam loading effect in the CSNS/RCS[J]. Chinese Physics C, 2015, 39(4): 047003. doi: 10.1088/1674-1137/39/4/047003 shu

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Received: 2014-06-30
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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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 beam loading effect in the CSNS/RCS

Corresponding author: WANG Sheng,

Received Date: 2014-06-30

Accepted Date: 1900-01-01

Available Online: 2015-04-05

Abstract: The China Spallation Neutron Source/Rapid Cycling Synchrotron (CSNS/RCS) accelerates a high-intensity proton beam from 80 MeV to 1.6 GeV. Since the beam current and beam power is high, the beam loading is a severe problem for the stability of the circulating beam in the RCS. To study the beam loading effect in the CSNS/RCS theoretically, the RLC circuit model of the rf cavity, the method of Fast Fourier Transform and the method of Laplace transform have been employed to obtain the impedance of the rf system, the beam spectrum and the beam-induced voltage, respectively. Based on these physical models, the beam dynamics equations have been revised and a beam loading model has been constructed in the simulation code ORIENT. By using the code, the beam loading effect on the rf system of the CSNS/RCS has been investigated. Some simulation results have been obtained and conclusions have been drawn.

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Study of the beam loading effect in the CSNS/RCS

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