Study on the effects of chromaticity and magnetic field tracking errors at CSNS/RCS

XU Shou-Yan; WANG Sheng; AN Yu-Wen; LI Zhi-Ping

doi:10.1088/1674-1137/38/11/117003

Chinese Physics C> 2014, Vol. 38> Issue(11) : 117003 DOI: 10.1088/1674-1137/38/11/117003

Study on the effects of chromaticity and magnetic field tracking errors at CSNS/RCS

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Abstract：
The Rapid Cycling Synchrotron (RCS) is a key component of the China Spallation Neutron Source (CSNS). For this type of high intensity proton synchrotron, the chromaticity, space charge effects, and magnetic field tracking errors between the quadrupoles and the dipoles can induce beta function distortion and tune shift, and induce resonances. In this paper, the combined effects of chromaticity, magnetic field tracking errors and space charge on beam dynamics at CSNS/RCS are studied systemically. 3-D simulations with different magnetic field tracking errors are performed by using the code ORBIT, and the simulation results are compared with the case without tracking errors.

References

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WANG S et al. Chinese Physics C (HEP NP), 2009, 33(S2): 1-3[2] WEI J et al. Chinese Physics C (HEP NP), 2009, 33(11): 1033-1042[3] XU S Y et al. High Power Laser and Particle Beams, 2013, 25(3): 746-750 (in Chinese)[4] XU S Y et al. Chinese Physics C (HEP NP), 2011, 35(12): 1152-1158[5] CSNS Feasibility Study Report, June. 2009, IHEP[6] QI X. Private Communications[7] XU S Y et al. Proceedings of the HB2010. Morschach, Switzerland[8] Galambos J D et al. ORBIT Use's Manual V.1.0, July 1999

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XU Shou-Yan, WANG Sheng, AN Yu-Wen and LI Zhi-Ping. Study on the effects of chromaticity and magnetic field tracking errors at CSNS/RCS[J]. Chinese Physics C, 2014, 38(11): 117003. doi: 10.1088/1674-1137/38/11/117003

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Received: 2013-12-06
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on the effects of chromaticity and magnetic field tracking errors at CSNS/RCS

Corresponding author: XU Shou-Yan,

Received Date: 2013-12-06
Accepted Date: 1900-01-01
Available Online: 2014-11-05

Abstract: The Rapid Cycling Synchrotron (RCS) is a key component of the China Spallation Neutron Source (CSNS). For this type of high intensity proton synchrotron, the chromaticity, space charge effects, and magnetic field tracking errors between the quadrupoles and the dipoles can induce beta function distortion and tune shift, and induce resonances. In this paper, the combined effects of chromaticity, magnetic field tracking errors and space charge on beam dynamics at CSNS/RCS are studied systemically. 3-D simulations with different magnetic field tracking errors are performed by using the code ORBIT, and the simulation results are compared with the case without tracking errors.