Design and Fabrication of the Magnets for BEPCⅡ Project

SHI Cai-Tu; NI Gan-Lin; SUN Xian-Jing; CAO Zan; YIN Zhao-Sheng; PANG Jia-Biao; CHEN Wan; LI Li; CHEN Fu-San; PENG Quan-Ling; YIN Bao-Gui; ZHANG Zhuo; SUN Yao-Lin; WANG Jian-Li; ZHANG Jia-Fei

Chinese Physics C> 2008, Vol. 32> Issue(S1) : 7-10

Design and Fabrication of the Magnets for BEPCⅡ Project

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The BEPCⅡ is the upgrade project of the Beijing Electron Positron Collider (BEPC). According to the BEPCⅡ double ring design scheme, a new ring will be added in the existing BEPC tunnel. The machine will provide electron and positron beams with an energy range from 1.0GeV to 2.1GeV for high energy physics research, and an electron beam of 2.5GeV, 250mA for synchrotron radiation. So actually there are three storage rings for the BEPCⅡ machine. Due to the limited space of the existing BEPC tunnel and the requirement of high luminosity, the antechamber type vacuum chamber is used, that makes the BEPCⅡ magnets' design and fabrication very difficult. In the paper the general features of the design and fabrication of several kinds of main magnets for the BEPCⅡ storage ring and its interaction region are introduced. And the magnetic field measurement results are presented.

References

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The Primary Design of the Upgrade Project for BeijingElectron Position Collider BEPC/, 2003 (in Chinese)北京正负电子对撞机重大改造工程BEPCⅡ初步设计, 2003)2 Jack Tanabe. Iron Dominated Electromagnets Design, Fab-rication, Assembly and Measurement, January 20053 YIN Z S et al. NIM in Physics Research A, 2007, 573:323-328

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[2]	SUI Yan-Feng , WANG Lin , ZHAO Ying , YUE Jun-Hui , LI Xiao-Ping , CAO Jian-She , MA Li . BEPCⅡ wire scanner system. Chinese Physics C, 2010, 34(10): 1661-1664. doi: 10.1088/1674-1137/34/10/021
[3]	ZHANG Chuang . BEPCⅡ: construction and commissioning. Chinese Physics C, 2009, 33(S2): 60-64. doi: 10.1088/1674-1137/33/S2/016
[4]	WANG Guang-Wei , SHA Peng , PAN Wei-Min , SUN Yi , LI Zhong-Quan , LIU Rong , HUANG Tong-Ming , ZENG Ri-Hua , ZHAO Guang-Yuan , HUANG Hong , XU Yu-Fen , MA Qiang , LIN Hai-Ying , XU Bo , WANG Qun-Yao . Construction of the BEPCⅡ RF System. Chinese Physics C, 2008, 32(S1): 169-171.
[5]	CHI Yun-Long , WANG Wei . Design of Pulse Power Supply for CSNS Extraction Kicker Magnet. Chinese Physics C, 2008, 32(S1): 25-27.
[6]	CHEN Jin-Hui . Time Drift Stabilizer Unit in BEPCⅡ Injection Kicker System. Chinese Physics C, 2008, 32(S1): 4-6.
[7]	A.Hobl , B.Fischer , C.Radermacher , D.Krischel , M.Jordan , M.M.Reumers . Superconducting Magnets for ECRIS - Design Aspects and Industrial Production. Chinese Physics C, 2007, 31(S1): 27-30.
[8]	WANG Chun-Hong , WANG Xiao-Li , LIU Jia , SHI Hao-Li , GAN Quan , LIU Shu , ZHAO Ji-Jiu . BEPCⅡ Magnet Power Supply Control System. Chinese Physics C, 2007, 31(1): 91-95.
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[10]	PEI Guo-Xi , SUN Yao-Lin , LIU Jin-Tong , CHI Yun-Long , LIU Yu-Cheng , LIU Nian-Zong . BEPCⅡ Positron Source. Chinese Physics C, 2006, 30(1): 66-70.
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[13]	PAN Wei-Min , ZHAO Guang-Yuan , WANG Hao , WANG Guang-Wei . Technical requirements and design of BEPCⅡ RF power source. Chinese Physics C, 2006, 30(3): 246-250.
[14]	YU Cheng-Hui , WU Ying-Zhi , XU Gang . Coupling Compensation Scheme in BEPCⅡ. Chinese Physics C, 2005, 29(4): 418-423.
[15]	LI Jia-Cai , ZHANG Liang-Sheng , HU Chun-Liang , WU Yuan-Ming , CUI Xiang-Zong , LIU Zheng-Quan , ZHANG Shao-Ping , ZHOU Bao-Qing , ZHENG Lin-Sheng . Design and Performance Measurement of the 1GeV/c Multiparticle Magnetic Spectrometer in the BEPC-LINAC Test Beam. Chinese Physics C, 2005, 29(1): 55-61.
[16]	KANG Wen , HAO Yao-Dou , HANG Qian , CHEN Jin-Hui . Design and Construction of a New Type Kicker Magnet for Injection of BEPCⅡ Storage Ring. Chinese Physics C, 2005, 29(6): 611-614.
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[20]	HUANG Yong-Zhang , TENG Ke-Jian , XIE Jia-Lin . Design and Fabrication of Alpha Magnet for an Microwave Electron Gun. Chinese Physics C, 1993, 17(9): 790-795.

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SHI Cai-Tu, NI Gan-Lin, SUN Xian-Jing, CAO Zan, YIN Zhao-Sheng, PANG Jia-Biao, CHEN Wan, LI Li, CHEN Fu-San, PENG Quan-Ling, YIN Bao-Gui, ZHANG Zhuo, SUN Yao-Lin, WANG Jian-Li and ZHANG Jia-Fei. Design and Fabrication of the Magnets for BEPCⅡ Project[J]. Chinese Physics C, 2008, 32(S1): 7-10.

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Received: 2008-01-09
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Design and Fabrication of the Magnets for BEPCⅡ Project

Corresponding author: SHI Cai-Tu,

Received Date: 2008-01-09

Accepted Date: 1900-01-01

Available Online: 2008-01-04

Abstract: The BEPCⅡ is the upgrade project of the Beijing Electron Positron Collider (BEPC). According to the BEPCⅡ double ring design scheme, a new ring will be added in the existing BEPC tunnel. The machine will provide electron and positron beams with an energy range from 1.0GeV to 2.1GeV for high energy physics research, and an electron beam of 2.5GeV, 250mA for synchrotron radiation. So actually there are three storage rings for the BEPCⅡ machine. Due to the limited space of the existing BEPC tunnel and the requirement of high luminosity, the antechamber type vacuum chamber is used, that makes the BEPCⅡ magnets' design and fabrication very difficult. In the paper the general features of the design and fabrication of several kinds of main magnets for the BEPCⅡ storage ring and its interaction region are introduced. And the magnetic field measurement results are presented.

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Design and Fabrication of the Magnets for BEPCⅡ Project

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通讯作者: 陈斌, bchen63@163.com

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