【摘要】 本文报导L3强子量能器第一个模块60个正比室的研制和性能测试.在充以Ar（80%）+CO₂（20%）混合气条件下,室计数率坪长125V,坪坡度3.4%/100V.输出脉冲具有良好的均匀性.长时间的高压“锻炼”能使暗电流减小.由正比室装配成的强子量能器模块,在CERN SPS试验束上进行了性能测试,取得了满意的结果.更多还原

【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%/100 V 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.更多还原