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1 引言在LEP3实验中,倾斜式多丝正比室PIC(proportional inclined chamber)是用来监测束流亮度和双光子物理事例测量的。该室可以确定粒子位置,与BGO量能器配合,测量巴巴散射事例和双光子事例。实验上要求PIC室能在尽可能大的小角度范围内测量出射粒子
1 Introduction In LEP3 experiments, a proportional inclined chamber (PIC) was used to monitor beam brightness and two-photon physics. The chamber can determine the particle location, cooperate with the BGO energy gauge, measure the case of barba scattering and two-photon cases. Experiments require that the PIC chamber be able to measure exiting particles in as small a range of angles as possible