【摘要】 本文报告了利用自猝灭流光信号进行电荷分配法定位的实验结果。实验显示,信号即使经过60米长电缆的传输进入ADC,对2.5米长的计数管来说,在中心处的位置分辨率仍可达3.3mm,比利用正比信号得的结果要好得多,同时,定位的线性好于2.5米全长的0.14％。文中同时还讨论了ADC门宽以及高压隔直流电容C的选择等问题,为设计北京正负电子对撞机谱仪中簇射取样计数器的取样保持电路提供了对某些参量的实际要求。更多还原

【Abstract】 The experimental results of charge division method with the self-quenching streamer pulses are reported. It is shown that the position resolution at the middle point of 2.5 m long tube can reach 3.3 mm even the signals are sent to ADC module by 60 m long cable. It is much better than using the proportional pulses, and the non-linearity is less than 0.14% of 2.5 m full scale. Some other aspects, such as ADC gate width and selecting of the decoupling capacitor etc. are also discussed, they would provide some practical basis for the design of the sample and hold system in the gas sampling shower counter of the Beijing e~+e~- collider spectrometer.更多还原