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Chinese Physics C> 2006, Vol. 30> Issue(10) : 1036-1040 

Design and Construction of the Plugged-in 22Na Based Slow Positron Beam Facility

  •  Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, CAS, Beijing 100049, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

  • The Beijing intense slow positron beam facility has restricted running time of the BEPC-LINAC designed for BES and BSRF operation, We have therefore designed and constructed the plugged-in 22Na based slow positron beam section in the Beijing intense slow positron beam line with which we can supply continuous slow positron beam for debugging of newly-built positron annihilation measurement systems and saving running time of the Beijing intense slow positron beam. The plugged-in 22Na based slow positron beam section includes positron source(22Na), positron moderator, E×B slow positron energy filter, multilevel electrostatic acceleration tube, radioprotection, magnetic transport system and vacuum system, etc. The new slow positron beam line will be running on April, 2006.
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    [1] . YU Run-Sheng, WANG Bao-Yi, MA Chuang-Xin et al.HEP NP, 2001, 25(Supp.): 135(in Chinese)(于润升, 王宝义, 马创新等. 高能物理与核物理, 2001; 25(增刊): 1352. CAO Xing-Zhong, WANG Bao-Yi, WEI Long et al. Nu-clear Techniques, 2004, 27: 435(in Chinese)(曹兴忠, 王宝义, 魏龙等. 核技术, 2004. 27: 435)3. CAO Xing-Zhong, WANG Bao-Yi, YU Run-Sheng et al.HEP NP, 2004, 28: 560-565(in Chinese)(曹兴忠, 王宝义, 于润升等. 高能物理与核物理, 2004; 28:560-565)4. WANG Bao-Yi, CAO Xing-Zhong, WEI Long et al. Mate-rials Science Forum, 2004, 445-446: 5135. MA Yan-Yun, PEI Shi-Lun, CAO Xing-Zhong et al. HEP NP, 2006, 30: 166-170(in Chinese)(马雁云, 裴士伦, 曹兴忠等. 高能物理与核物理, 2006, 30: 166-170)6. WANG Hua-Jun. Journal of Sichuan Institute of Light In-dustry and Chemical Technology, 1999, 12(4): 23-25(in Chinese)(王华军. 四川轻化工学院学报, 1999, 12(4): 23-25)7. ZHANG Zhi-Ming, WANG Bao-Yi, MA Chuang-Xin etal. Nuclear Electronics Detection Technology, 2004, 24:490-491(in Chinese)(章志明, 王宝义, 马创新等. 核电子学与核探测技术, 2004. 24: 490-491)8. HE Chun-Qing, Eisaku Hamada. Nuclear Instruments andMethods in Physics Research, 2003, B211: 571-5769. YU Run-Sheng, WEI Long, WANG Bao-Yi et al. Nucl. In-strum. Methods, 2001, A419: 457/1-210. YU Run-Sheng. Construction of Slow Positron Beam Linesand Investigation of the Relative Techniques. Ph. D Dis-sertation of CAS. Beijing: Institue of High Energy Physics,2001. 29-39(in Chinese)(于润升. 慢正电子束流装置的研制及相关技术研究. 中国科学院博士论文, 北京: 中国科学院告能物理研究所, 2001. 29-39)11. Hutchins S M, Goleman P G et al. J. Phys. E: Sci. Instrum.,1986, 19: 282-28312. DU Bing-Chu, WANG Jian-Ru. Electro-optics. Beijing: Tsinghua University Press, 2002. 280-281(in Chinese)(杜秉初, 汪键如. 电子光学. 北京:清华大学出版社, 2002. 280-281)

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WANG Ping, CAO Xing-Zhong, MA Yan-Yun, QIN Xiu-Bo, WANG Bao-Yi, MA Chuang-Xin and WEI Long. Design and Construction of the Plugged-in 22Na Based Slow Positron Beam Facility[J]. Chinese Physics C, 2006, 30(10): 1036-1040.
WANG Ping, CAO Xing-Zhong, MA Yan-Yun, QIN Xiu-Bo, WANG Bao-Yi, MA Chuang-Xin and WEI Long. Design and Construction of the Plugged-in 22Na Based Slow Positron Beam Facility[J]. Chinese Physics C, 2006, 30(10): 1036-1040. shu
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Received: 2006-01-24
Revised: 2006-03-07
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Design and Construction of the Plugged-in 22Na Based Slow Positron Beam Facility

    Corresponding author: WANG Ping,
  • Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, CAS, Beijing 100049, China2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received Date: 2006-01-24
  • Accepted Date: 2006-03-07
  • Available Online: 2006-10-05

Abstract: The Beijing intense slow positron beam facility has restricted running time of the BEPC-LINAC designed for BES and BSRF operation, We have therefore designed and constructed the plugged-in 22Na based slow positron beam section in the Beijing intense slow positron beam line with which we can supply continuous slow positron beam for debugging of newly-built positron annihilation measurement systems and saving running time of the Beijing intense slow positron beam. The plugged-in 22Na based slow positron beam section includes positron source(22Na), positron moderator, E×B slow positron energy filter, multilevel electrostatic acceleration tube, radioprotection, magnetic transport system and vacuum system, etc. The new slow positron beam line will be running on April, 2006.

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