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The vacuum system of the BEPCII storage ring
Dong HY(董海义); Song H(宋洪); Li Q(李琦); Zhou LJ(周利娟); Yang Q(杨奇); Wang YT(王雅婷); Xiao Q(肖琼); Dong, HY; Song, H; Li, Q; Zhou, LJ; Yang, Q; Wang, YT; Xiao, QO
2010
发表期刊NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
卷号620期号:2-3页码:#REF!
通讯作者Dong, HY (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型Review
摘要The design, fabrication and performance of a vacuum system for the BEPCII storage ring are described in this paper. The arc beam pipes and their antechambers are made by machining upper and lower chamber halves, then welding them at the periphery to form a complete chamber. The photon absorbers and the pumping stations are located in the antechambers. The special vacuum components, such as photon absorbers, RF shielding bellows, and the in-vacuum wiggler, have been manufactured according to the characteristics of the BEPCII storage ring and shown to perform well. The vacuum systems of the BEPCII storage ring have been assembled and run over a two years period, and they had accumulated 1000 A h of beam dose in the colliding mode as of the end of July 2009. On average, the dynamic pressure rise of the BEPCII storage ring is less than 3 x 10(-7) Pa/A. The effect of a cloud of photoelectrons around the positron beam was not found in the high beam current, because the beam pipe with an antechamber in the positron ring was coated by a TiN layer of about 100 nm in thickness. Ion currents of a few specially positioned ion pumps were slight high in the high beam current, which can be explained as an effect of electron multiplying. (C) 2010 Elsevier B.V. All rights reserved.
关键词Storage ring Vacuum chamber Photon absorber Beam dose
学科领域Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
DOI10.1016/j.nima.2010.03.133
收录类别SCI
WOS类目Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
WOS记录号WOS:000280601700011
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226627
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GB/T 7714
Dong HY,Song H,Li Q,et al. The vacuum system of the BEPCII storage ring[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2010,620(2-3):#REF!.
APA 董海义.,宋洪.,李琦.,周利娟.,杨奇.,...&Xiao, QO.(2010).The vacuum system of the BEPCII storage ring.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,620(2-3),#REF!.
MLA 董海义,et al."The vacuum system of the BEPCII storage ring".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 620.2-3(2010):#REF!.
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