THE STUDY AND PRODUCTION OF PWC'S FOR THE FIRST MODULE OF L3 HADRON CALORIMETER

CHEN Chang; CHEN He-Sheng; LI Huan-Tie; LI Xiao-Guang; LV Yu-Sheng; MAO Yu-Fang; TANG Xiao-Wei; TONG Guo-Liang; WANG Meng-Qi; XU Hong-Zhang; YANG Chang-Gen; YANG Kang-Shu; YANG Qing-Yun; ZHANG Shou-Yu; ZHU Yong-Sheng; ZHUANG Hong-Lin

Chinese Physics C> 1988, Vol. 12> Issue(5) : 587-592

THE STUDY AND PRODUCTION OF PWC'S FOR THE FIRST MODULE OF L3 HADRON CALORIMETER

Institute of High Energy Physics,Academia Sinica,Beijing

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Abstract：
This paper reports the study and production and the performance of 60 PWC's which were the first module of L3 hadron calorimeter.125 Volts plateau and 3.4%/100V plateau slope were obtained with the gas mixture of Ar:CO₂=80:20.We also checked the dark current of some chambers and found that the dark current could be reduced by "cooking".The chambers worked well when they were assembled in a calorimeter module and tested by the beam of SPS at CERN.

References

[1]	L3-Collaboration, The Construction of L3 (April, 1985).[2] W. Boehlen et al., EIR/ETH Internal Report (Zurich, Switzerland, 1985).[3] A. Arefiev et al., Nucl. Inttr. Mcthod. A245(1986), 71[4] H. C. Group, L3 Collaboration, Nucl. Instr, Method. (to be published).

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CHEN Chang, CHEN He-Sheng, LI Huan-Tie, LI Xiao-Guang, LV Yu-Sheng, MAO Yu-Fang, TANG Xiao-Wei, TONG Guo-Liang, WANG Meng-Qi, XU Hong-Zhang, YANG Chang-Gen, YANG Kang-Shu, YANG Qing-Yun, ZHANG Shou-Yu, ZHU Yong-Sheng and ZHUANG Hong-Lin. THE STUDY AND PRODUCTION OF PWC'S FOR THE FIRST MODULE OF L3 HADRON CALORIMETER[J]. Chinese Physics C, 1988, 12(5): 587-592.

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Received: 1900-01-01
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

THE STUDY AND PRODUCTION OF PWC'S FOR THE FIRST MODULE OF L3 HADRON CALORIMETER

Corresponding author: CHEN Chang,

Institute of High Energy Physics,Academia Sinica,Beijing

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1988-10-05

Abstract: This paper reports the study and production and the performance of 60 PWC's which were the first module of L3 hadron calorimeter.125 Volts plateau and 3.4%/100V plateau slope were obtained with the gas mixture of Ar:CO₂=80:20.We also checked the dark current of some chambers and found that the dark current could be reduced by "cooking".The chambers worked well when they were assembled in a calorimeter module and tested by the beam of SPS at CERN.