Effects of injection beam parameters and foil scattering for CSNS/RCS

The China Spallation Neutron Source （CSNS） uses H- stripping and phase space painting metnocl co fill a large ring acceptance with a small emittance linac beam. The dependence of the painting beam on the injection beam parameters was studied for the Rapid Cycling Synchrotron （RCS）. The simulation st...

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Bibliographic Details
Published inChinese physics C Vol. 37; no. 6; pp. 77 - 82
Main Author 黄明阳 王生 邱静 王娜 许守彦
Format Journal Article
LanguageEnglish
Published 01.06.2013
Subjects
Beams (radiation)
Emittance
Foils
Linear accelerators
RCS
Scattering
Simulation
Spreads
Stripping
匹配条件
同步加速器
散射
散裂中子源
汽提效率
直线加速器
相互作用
Online AccessGet full text
ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/37/6/067001

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Summary:The China Spallation Neutron Source （CSNS） uses H- stripping and phase space painting metnocl co fill a large ring acceptance with a small emittance linac beam. The dependence of the painting beam on the injection beam parameters was studied for the Rapid Cycling Synchrotron （RCS）. The simulation study was done for injection with different momentum spreads, different rms emittances of the injection beam, and different matching conditions. Then, the beam loss, 99% and rms emittances were obtained, and the optimized injection beam parameters were given. The interaction between H- beam and stripping foil was studied, and the effect of foil scattering was simulated. The stripping efficiency was calculated and the suitable thickness of stripping foil was obtained. In addition, the energy deposition on the foil and the beam loss due to the foil scattering were also studied.
Bibliography:HUANG Ming-Yang WANG Sheng QIU Jing WANG Na XU Shou-Yan（ Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China）
11-5641/O4
CSNS, RCS, injection parameter, foil scattering
The China Spallation Neutron Source （CSNS） uses H- stripping and phase space painting metnocl co fill a large ring acceptance with a small emittance linac beam. The dependence of the painting beam on the injection beam parameters was studied for the Rapid Cycling Synchrotron （RCS）. The simulation study was done for injection with different momentum spreads, different rms emittances of the injection beam, and different matching conditions. Then, the beam loss, 99% and rms emittances were obtained, and the optimized injection beam parameters were given. The interaction between H- beam and stripping foil was studied, and the effect of foil scattering was simulated. The stripping efficiency was calculated and the suitable thickness of stripping foil was obtained. In addition, the energy deposition on the foil and the beam loss due to the foil scattering were also studied.
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ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/37/6/067001