Study on space charge effects of the CSNS/RCS

XU Shou-Yan; WANG Sheng

doi:10.1088/1674-1137/35/12/014

Chinese Physics C> 2011, Vol. 35> Issue(12) : 1152-1158 DOI: 10.1088/1674-1137/35/12/014

Study on space charge effects of the CSNS/RCS

XU Shou-Yan ,
WANG Sheng ^,

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Abstract：
The Rapid Cycling Synchrotron (RCS) is a key component of the China Spallation Neutron Source (CSNS). The space charge effect is one of the most important issues in the CSNS/RCS, which limits the maximum beam intensity, as well as the maximum beam power. Space charge effects are the main source of emittance growth and beam loss in the RCS. Space charge effects have been studied by simulation for the CSNS/RCS. By optimizing the painting orbit, the optimized painting distribution was obtained. The space charge effects during the acceleration are studied and dangerous resonances, which may induce emittance growth and beam loss, are investigated. The results are an important reference for the design and commissioning of the CSNS/RCS.

References

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WANG S et al. Chinese Physics C (HEP NP), 2009, 33(S2): 1-32 WEI J et al. Chinese Physics C (HEP NP), 2009, 33(11): 1033-10423 Machida S. The Simpsons Program User's Reference Manual, July. 19924 Galambos J D et al. ORBIT Use's Manual V.1.0, July. 19995 WANG J B, Fedotov A V, WEI J. Proceedings of the EPAC 2000, Vienna, Austria6 TANG J Y, QIU J, WANG S, WEI J. HEP NP, 2006, 30(12): 1184-1189 (in Chinese)7 QIU J, TANG J Y, WANG S, WEI J. HEP NP, 2007, 31(10): 942-946 (in Chinese)8 Galambos J et al. Proceedings of the PAC'99, New York9 WEI T, WANG S, QIU J, TANG J Y, QIN Q. Chinese Physics C (HEP NP), 2010, 34(2): 218-22310 XU S Y. Ph. D. thesis. Graduate University of Chinese Academy of Sciences. 201111 Fedotov A V, Holmes J, Gluckstern R L. Phys. Rev. ST AB, 2001, 4: 08420212 Hofmann I, Frankenheim O B. Phys. Rev. Lett., 2001, 87: 03480213 Hofmann I. Phys. Rev. E, 1998, 57: 471314 Montague B W. CERN Report, 68-38. 196815 Fedotov A V et al. Proceedings of the PAC'01, Chicago16 Hofmann I, QIANG J, Ryne R D. Phys. Rev. Lett., 2001, 86: 2313

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XU Shou-Yan and WANG Sheng. Study on space charge effects of the CSNS/RCS[J]. Chinese Physics C, 2011, 35(12): 1152-1158. doi: 10.1088/1674-1137/35/12/014

XU Shou-Yan and WANG Sheng. Study on space charge effects of the CSNS/RCS[J]. Chinese Physics C, 2011, 35(12): 1152-1158. doi: 10.1088/1674-1137/35/12/014 shu

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Received: 2011-03-29
Revised: 2011-03-08

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on space charge effects of the CSNS/RCS

XU Shou-Yan
WANG Sheng ^,

Corresponding author: WANG Sheng,

Received Date: 2011-03-29
Accepted Date: 2011-03-08
Available Online: 2011-12-05

Abstract: The Rapid Cycling Synchrotron (RCS) is a key component of the China Spallation Neutron Source (CSNS). The space charge effect is one of the most important issues in the CSNS/RCS, which limits the maximum beam intensity, as well as the maximum beam power. Space charge effects are the main source of emittance growth and beam loss in the RCS. Space charge effects have been studied by simulation for the CSNS/RCS. By optimizing the painting orbit, the optimized painting distribution was obtained. The space charge effects during the acceleration are studied and dangerous resonances, which may induce emittance growth and beam loss, are investigated. The results are an important reference for the design and commissioning of the CSNS/RCS.