Beam Test for an 1:1 Module of Time of Flight Counter of BESⅢ

SUN Zhi-Jia; HENG Yue-Kun; ZHAO Xiao-Jian; WU Jin-Jie; SHI Feng; WU Chong; XUE Sheng-Tian; ZHAO Yu-Da; ZHAO Li; JIANG Lin-Li; WANG Feng-Mei; ZHENG Zhi-Peng

Chinese Physics C> 2005, Vol. 29> Issue(10) : 933-936

Beam Test for an 1:1 Module of Time of Flight Counter of BESⅢ

Institue of High Energy Physics,The Chinese Academy of Sciences,Beijing 100049,China2 Nanjing University,Nanjing 210039,China3 University of Science and Technology of China,Hefei 230036,China4 Zhengzhou University,Zhengzhou 450052,China

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Abstract：
A 1:1 module of time of flight counter of BESⅢ is measured with the test beam of BEPC. Using 800MeV/c electron beam, the time resolution and attenuation length of light transition in plastic scintillators, BC408 and EJ200 packed with Al foil and Tyvek paper,are measured respectively. The optimum choice is EJ200 packed with Al foil. The measured time resolution of less than 90ps may satisfy the BESⅢ design requirement.

References

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SUN Zhi-Jia, HENG Yue-Kun, ZHAO Xiao-Jian, WU Jin-Jie, SHI Feng, WU Chong, XUE Sheng-Tian, ZHAO Yu-Da, ZHAO Li, JIANG Lin-Li, WANG Feng-Mei and ZHENG Zhi-Peng. Beam Test for an 1:1 Module of Time of Flight Counter of BESⅢ[J]. Chinese Physics C, 2005, 29(10): 933-936.

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Received: 2005-03-14
Revised: 1900-01-01

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Beam Test for an 1:1 Module of Time of Flight Counter of BESⅢ

Corresponding author: SUN Zhi-Jia,

Institue of High Energy Physics,The Chinese Academy of Sciences,Beijing 100049,China2 Nanjing University,Nanjing 210039,China3 University of Science and Technology of China,Hefei 230036,China4 Zhengzhou University,Zhengzhou 450052,China

Received Date: 2005-03-14
Accepted Date: 1900-01-01
Available Online: 2005-10-05

Abstract: A 1:1 module of time of flight counter of BESⅢ is measured with the test beam of BEPC. Using 800MeV/c electron beam, the time resolution and attenuation length of light transition in plastic scintillators, BC408 and EJ200 packed with Al foil and Tyvek paper,are measured respectively. The optimum choice is EJ200 packed with Al foil. The measured time resolution of less than 90ps may satisfy the BESⅢ design requirement.