Side-effects of the space charge field introduced by a hollow electron beam in the electron cooler of CSRm

TANG Mei-Tang; YANG Xiao-Dong; MAO Li-Jun; LI Jie; MA Xiao-Ming; YAN Tai-Lai; ZHENG Wen-Heng; ZHAO He; WU Bo; WANG Geng; RUAN Shuang; SHA Xiao-Ping

doi:10.1088/1674-1137/39/12/127003

Chinese Physics C> 2015, Vol. 39> Issue(12) : 127003 DOI: 10.1088/1674-1137/39/12/127003

Side-effects of the space charge field introduced by a hollow electron beam in the electron cooler of CSRm

TANG Mei-Tang ^1,2 ,
YANG Xiao-Dong ^1,, ,
MAO Li-Jun ¹ ,
LI Jie ¹ ,
MA Xiao-Ming ¹ ,
YAN Tai-Lai ¹ ,
ZHENG Wen-Heng ^1,2 ,
ZHAO He ^1,2 ,
WU Bo ^1,2 ,
WANG Geng ^1,2 ,
RUAN Shuang ^1,2 ,
SHA Xiao-Ping ¹

Abstract
HTML
Reference
Related

PDF

Abstract：
An electron cooler is used to improve the quality of the ion beam in a synchrotron; however it also introduces a nonlinear electromagnetic field to the accelerator, which causes tune shift, tune spread and may drive resonances leading to ion beam loss. In this paper the tune shift and the tune spread caused by the nonlinear electromagnetic field of a hollow electron beam is investigated, and the resonance driving terms of the nonlinear electromagnetic field are analysed. The differences are presented compared with a solid electron beam. Calculations are performed for m ²³⁸U³²⁺ ions of energy 1.272 MeV stored in the main Cooler Storage Ring (CSRm) at the Institute of Modern Physics, Lanzhou. It is found that in this situation the nonlinear field caused by the hollow electron beam does not lead to serious resonances.
- electron cooler ,
- tune shift ,
- tune spread ,
- resonance

References

[1]	Ziemann V. Resonances Driven by the Electric Field of the Electron Cooler. TSL Note 98-43
[2]	Keil E. Beam-Beam Dynamics, in CERN 95-06, 539
[3]	Sorge S, Boine-Frankenheim O, Franchetti G. Analysis of Resonances Induced by the sis-18 Electron Cooler. Proceedings of COOL 2007, Bad Kreuznach, Germany. 121-124
[4]	MAO L J. The Simulation and Test of Electron Cooling in HIRFL-CSRm. PHD 2009. Institution of Modern Physic, Chinese Academy of Science, 2009

[1]	Nadir Khan , Zhong-Kui Huang , Wei-Qiang Wen , Sultan Mahmood , Li-Jun Dou , Shu-Xing Wang , Xin Xu , Han-Bing Wang , Chong-Yang Chen , Xiao-Ya Chuai , Xiao-Long Zhu , Dong-Mei Zhao , Li-Jun Mao , Jie Li , Da-Yu Yin , Jian-Cheng Yang , You-Jin Yuan , Lin-Fan Zhu , Xin-Wen Ma . Low energy range dielectronic recombination of Fluorine-like Fe¹⁷⁺ at the CSRm. Chinese Physics C, 2018, 42(6): 064001. doi: 10.1088/1674-1137/42/6/064001
[2]	Si-Jie Dai , Fu-Rong Xu , Jian-Guo Li , Bai-Shan Hu , Zhong-Hao Sun . Continuum effect in resonance spectra of neutron-rich oxygen isotopes. Chinese Physics C, 2018, 42(11): 114106. doi: 10.1088/1674-1137/42/11/114106
[3]	Wei Sun , Andrei Alexandru , Ying Chen , Terrence Draper , Zhaofeng Liu , Yi-Bo Yang . Anatomy of the ρ resonance from lattice QCD at the physical poin. Chinese Physics C, 2018, 42(6): 063102. doi: 10.1088/1674-1137/42/6/063102
[4]	Wei Li , Hao Hao , Stepan F. Mikhailov , Wei Xu , Jing-Yi Li , Wei-Min Li , Ying. K. Wu . Study of magnetic hysteresis effects in a storage ring using precision tune measurement. Chinese Physics C, 2016, 40(12): 127002. doi: 10.1088/1674-1137/40/12/127002
[5]	HUANG Jiang , XIONG Yong-Qian , CHEN De-Zhi , LIU Kai-Feng , YANG Jun , LI Dong , YU Tiao-Qin , FAN Ming-Wu , YANG Bo . A permanent magnet electron beam spread system used fora low energy electron irradiation accelerator. Chinese Physics C, 2014, 38(10): 107008. doi: 10.1088/1674-1137/38/10/107008
[6]	Saroj Jena , S. Yadav , R. K. Agrawal , A. D. Ghodke , Pravin Fatnani , T. A. Puntambekar . Stabilization of betatron tune in Indus-2 storage ring. Chinese Physics C, 2014, 38(6): 067002. doi: 10.1088/1674-1137/38/6/067002
[7]	XU Wei , LI Jing-Yi , HE Duo-Hui . A betatron tune measurement system based on bunch-by-bunch transverse feedback at the Duke storage ring. Chinese Physics C, 2013, 37(7): 077006. doi: 10.1088/1674-1137/37/7/077006
[8]	YANG Xiao-Yu , XU Tao-Guang , FU Shi-Nian , ZENG Lei , BIAN Xiao-Juan . Classical and modern power spectrum estimation for tune measurement in CSNS RCS. Chinese Physics C, 2013, 37(11): 117003. doi: 10.1088/1674-1137/37/11/117003
[9]	YANG Xiao-Yu , XU Tao-Guang , FU Shi-Nian , LIU Yu-Dong , LI Yong , ZHAO Ya-Liang . Design of a stripline kicker for tune measurementin CSNS RCS. Chinese Physics C, 2012, 36(7): 666-669. doi: 10.1088/1674-1137/36/7/017
[10]	D. Drechsel , S.S. Kamalov , M. Vanderhaeghen . Baryon resonance analysis from MAID. Chinese Physics C, 2009, 33(12): 1069-1076. doi: 10.1088/1674-1137/33/12/005
[11]	HUANG Fei . Strategies for baryon resonance analysis. Chinese Physics C, 2009, 33(12): 1127-1131. doi: 10.1088/1674-1137/33/12/013
[12]	R. A. Arndt , W. J. Briscoe , M. W. Paris , I. I. Strakovsky , R. L. Workman . Baryon resonance analysis from SAID. Chinese Physics C, 2009, 33(12): 1063-1068. doi: 10.1088/1674-1137/33/12/004
[13]	Daisuke Jido , Yoshiko Kanada-En'yo . A new N^* resonance as a hadronic molecular state. Chinese Physics C, 2009, 33(12): 1312-1317. doi: 10.1088/1674-1137/33/12/044
[14]	TIAN Shun-Qiang , LIU Gui-Min , LI Hao-Hu , HOU Jie , ZHANG Wen-Zhi . Tune optimization of the third generation light source storage ring based onFrequency Map Analysis. Chinese Physics C, 2009, 33(3): 224-231. doi: 10.1088/1674-1137/33/3/012
[15]	YANG Jian-Cheng , XIA Jia-Wen , WU Jun-Xia , XIA Guo-Xing , LIU Wei , YIN Xue-Jun , LIU Yong , ZHOU Xue-Mei , MAO Li-Jun . Effect of Tune Modulation on the Transverse Stability of Storage Ring. Chinese Physics C, 2004, 28(11): 1203-1208.
[16]	Zhang Lin , Yu Hong , Shen Qixing . Angular Distribution of the Process e⁺e^-→J/ψ→γ+X(J^Pc),X→BB,and the Spin-Parity Analysis of the Resonance X. Chinese Physics C, 1996, 20(S2): 135-140.
[17]	Rao Yinong , Xia Jiawen , Yuan Youjin , Wei Baowen . Electron Beam Transverse Temperature in HIRFL-CSR Electron Cooler. Chinese Physics C, 1996, 20(S2): 205-212.
[18]	Yu Hong , Shen Qixing . A Possible New Resonance State: Spin-parity Analysis of the X Resonance in J/ψ→X+f₀(975) Process. Chinese Physics C, 1995, 19(S1): 27-30.
[19]	ZHANG Chuang , CHEN Si-Yu . A GENERAL FORMULA OF TUNE SPREAD CAUSED BY MIDDLE PLANE ASYMMETRICAL MAGNETIC FIELD ERRORS. Chinese Physics C, 1988, 12(5): 652-657.
[20]	Zhang Chuang , Chen Siyu . A General Formula of Tune Spread Caused by the Middle-Plane-Asymmetrical Magnetic Field Errors. Chinese Physics C, 1988, 12(S2): 181-188.

Access

Get Citation

TANG Mei-Tang, YANG Xiao-Dong, MAO Li-Jun, LI Jie, MA Xiao-Ming, YAN Tai-Lai, ZHENG Wen-Heng, ZHAO He, WU Bo, WANG Geng, RUAN Shuang and SHA Xiao-Ping. Side-effects of the space charge field introduced by a hollow electron beam in the electron cooler of CSRm[J]. Chinese Physics C, 2015, 39(12): 127003. doi: 10.1088/1674-1137/39/12/127003

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2015-04-24

Fund

Supported by National Natural Science Foundation of China (11375245)

Article Metric

Article Views(1538)
PDF Downloads(26)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, [email protected]

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Side-effects of the space charge field introduced by a hollow electron beam in the electron cooler of CSRm

Corresponding author: YANG Xiao-Dong,

Received Date: 2015-04-24

Available Online: 2015-12-20

Fund Project: Supported by National Natural Science Foundation of China (11375245)

Abstract: An electron cooler is used to improve the quality of the ion beam in a synchrotron; however it also introduces a nonlinear electromagnetic field to the accelerator, which causes tune shift, tune spread and may drive resonances leading to ion beam loss. In this paper the tune shift and the tune spread caused by the nonlinear electromagnetic field of a hollow electron beam is investigated, and the resonance driving terms of the nonlinear electromagnetic field are analysed. The differences are presented compared with a solid electron beam. Calculations are performed for m ²³⁸U³²⁺ ions of energy 1.272 MeV stored in the main Cooler Storage Ring (CSRm) at the Institute of Modern Physics, Lanzhou. It is found that in this situation the nonlinear field caused by the hollow electron beam does not lead to serious resonances.

HTML

Reference (4)

Side-effects of the space charge field introduced by a hollow electron beam in the electron cooler of CSRm

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, [email protected]

Email This Article