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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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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[1]

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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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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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.