Studies on the Beam Orbit and Energy Instabilities at the BEPCⅡ Linac

WANG Shu-Hong; PEI Guo-Xi; LIU Wei-Bin; CHEN Yan-Wei; YE Qiang; GENG Zhe-Qiao

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2007, Vol. 31> Issue(11) : 1067-1070

Studies on the Beam Orbit and Energy Instabilities at the BEPCⅡ Linac

Institute of High Energy Physics, CAS, Beijing 100049, China

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Abstract：
During the commissioning and early operation of the upgraded BEPCⅡ injector linac, some beam instabilities were appeared, and have been studied by both experimental and analytical ways. This paper describes the observed beam orbit instabilities, beam energy jitter, and the beam emittance jitter. The ways to cure these instabilities are also presented.

References

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[3]	YANG Yu-Feng , ZHU Xiong-Wei . Microbunch Instability in Wigglers. Chinese Physics C, 2007, 31(8): 778-782.
[4]	HOU Mi , GENG Zhe-Qiao . Construction of the Phasing System for BEPCⅡ Linac. Chinese Physics C, 2007, 31(4): 391-394.
[5]	PEI Shi-Lun , WANG Shu-Hong . Transient Beam Loading Effects on Standing Wave Cavities in Linear Accelerators. Chinese Physics C, 2006, 30(5): 454-461.
[6]	GEN Zhe-Qiao , HOU Mi , PEI Guo-Xi . PAD Design for the Phasing System of BEPCⅡ Linac. Chinese Physics C, 2006, 30(2): 151-154.
[7]	CHEN Yan-Wei , WANG Shu-Hong , PEI Guo-Xi , LIU Wei-Bin , YE Qiang . Beam Commissioning of BEPCII Injector Linac. Chinese Physics C, 2006, 30(6): 562-565.
[8]	WANG Shu-Hong , PEI Guo-Xi , SUN Yao-Lin , CHI Yun-Long , CHEN Yan-Wei , CAO Jian-She , KONG Xiang-Cheng , ZHAO Feng-Li , HOU Mi , DENG Bing-Lin . BEPCⅡ Linac Upgrade and Beam Commissioning. Chinese Physics C, 2006, 30(S1): 150-152.
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[10]	GUO Zhi-Yuan , LIU Yu-Dong , Qin Qing , WANG Jiu-Qing , XING Jun . The Studies of Electron Cloud Instability in the BEPC. Chinese Physics C, 2006, 30(S1): 102-104.
[11]	LI Jia-Cai¹ , WU Yuan-Ming¹ , CUI Xiang-Zong¹ , ZHANG Liang-Sheng¹ , ZHOU Bao-Qing¹ , LIU Zheng-Quan¹ , ZHANG Shao-Ping¹ , LIU Shi-Xing² , SUN Chang-Chun¹ , SHEN Ji² , YIN Ze-Jie² , ZHANG Yong-Ming<sup , , , , . A Test Beam Upgrade Based on the BEPC-LINAC. Chinese Physics C, 2004, 28(12): 1269-1277.
[12]	LIU Yu-Dong , GUO Zhi-Yuan , QIN Qing , WANG Jiu-Qing . Electron Cloud Instability Simulation Studies for BEPCⅡ. Chinese Physics C, 2004, 28(11): 1222-1226.
[13]	WANG Shun-Jin , GUO Yuan-Jun . Complementary Chaos and Spin Polarization Stability in Cyclotrons Studied from the Nonautonomous SU(2)Dynamical System. Chinese Physics C, 2003, 27(12): 1123-1127.
[14]	LUO Yun , ZHANG Chuang , GUO Zhi-Yuan . Study of Ion Induced Instability in BTCF. Chinese Physics C, 2001, 25(5): 437-442.
[15]	GUO Zhi-Yuan , QIN Qing , ZHANG Chuang , MA Li . Study on Beam Photoelectron Instability in BEPC. Chinese Physics C, 2001, 25(3): 251-257.
[16]	LUO Yun , GUO Zhi-Yuan , ZHANG Chuang . Analysis of an Ion Induced Coupled Bunch Instability in BEPC. Chinese Physics C, 2001, 25(3): 258-263.
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[20]	LUO ZI-HUA , LUO YING-XIONG , WANG LIN-LIN . STUDY OF THE BEAM TRAMSVERSE MOTION IN THE RFQ STRUCTURE. Chinese Physics C, 1982, 6(6): 688-696.

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WANG Shu-Hong, PEI Guo-Xi, LIU Wei-Bin, CHEN Yan-Wei, YE Qiang and GENG Zhe-Qiao. Studies on the Beam Orbit and Energy Instabilities at the BEPCⅡ Linac[J]. Chinese Physics C, 2007, 31(11): 1067-1070.

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Received: 2007-03-13
Revised: 2007-04-02

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Studies on the Beam Orbit and Energy Instabilities at the BEPCⅡ Linac

Corresponding author: WANG Shu-Hong,

Institute of High Energy Physics, CAS, Beijing 100049, China

Received Date: 2007-03-13
Accepted Date: 2007-04-02
Available Online: 2007-11-05

Abstract: During the commissioning and early operation of the upgraded BEPCⅡ injector linac, some beam instabilities were appeared, and have been studied by both experimental and analytical ways. This paper describes the observed beam orbit instabilities, beam energy jitter, and the beam emittance jitter. The ways to cure these instabilities are also presented.