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THE BEIJING ELECTRON-POSITRON COLLIDER AND ITS SECOND PHASE CONSTRUCTION |
ZHANG Chuang |
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China |
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Abstract: The Beijing Electron-Positron Collider (BEPC) has been well operated for 15 years with many exciting high energy physics and synchrotron radiation research results since it was put into operation in 1989. Aiming at t and Charm physics, the BEPC has become a leading machine in the world in its energy region. In order to keep China’s leading position in the t and Charm physics, Chinese scientists proposed the BEPCII project as the second phase construction of the BEPC. The project was approved by Chinese government at the end of 2003. Like the BEPC, the BEPCII will serve two purposes, i.e. high energy physics and synchrotron radiation. The luminosity of the BEPCII will be two orders of magnitude higher than the present BEPC and its performance of synchrotron radiation operation will also be significantly improved. The performance of the BEPC and progress of the BEPCII as well as their prospect are reported in this paper.
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Received: 10 October 2004
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