高能物理与核物理
高能物理與覈物理
고능물리여핵물리
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS
2003年
11期
1019-1022
,共4页
阻性板探测器(RPC) 气体比分 探测效率 坪长 暗电流
阻性闆探測器(RPC) 氣體比分 探測效率 坪長 暗電流
조성판탐측기(RPC) 기체비분 탐측효솔 평장 암전류
RPC%gas mixture ratio%plateau length%detection efficiency%dark current
对不同比分气体对RPC性能的影响进行了大量的实验研究. 主要是进行了基于氩、异丁烷和绿色氟利昂F134A(C2H2F4)的实验. 保持氩气的比分为20%,30%,40%,改变异丁烷和F134A的比分进行实验,分别测量了探测效率、单计数率、暗电流、信号幅度和多重计数随高压的变化曲线. 结果发现,减少氩气的比分,增加异丁烷和F134A的比分可以增加RPC的坪长,探测效率也有所提高,在效率坪区的暗电流也有所减小,但工作高压也需要相应地增加.
對不同比分氣體對RPC性能的影響進行瞭大量的實驗研究. 主要是進行瞭基于氬、異丁烷和綠色氟利昂F134A(C2H2F4)的實驗. 保持氬氣的比分為20%,30%,40%,改變異丁烷和F134A的比分進行實驗,分彆測量瞭探測效率、單計數率、暗電流、信號幅度和多重計數隨高壓的變化麯線. 結果髮現,減少氬氣的比分,增加異丁烷和F134A的比分可以增加RPC的坪長,探測效率也有所提高,在效率坪區的暗電流也有所減小,但工作高壓也需要相應地增加.
대불동비분기체대RPC성능적영향진행료대량적실험연구. 주요시진행료기우아、이정완화록색불리앙F134A(C2H2F4)적실험. 보지아기적비분위20%,30%,40%,개변이정완화F134A적비분진행실험,분별측량료탐측효솔、단계수솔、암전류、신호폭도화다중계수수고압적변화곡선. 결과발현,감소아기적비분,증가이정완화F134A적비분가이증가RPC적평장,탐측효솔야유소제고,재효솔평구적암전류야유소감소,단공작고압야수요상응지증가.
Plenty of experimental studies on the effects of performances of RPC operated with different gas mixtures have been carried out. The curves of signal amplitude, multi-counting, efficiency, single counting rate and dark current versus the high voltage were measured using cosmic rays, based on the gas mixtures of Argon, Iso-butane and F134A with different fractions. The measured results show the plateau length could be prolonged, the detection efficiency increased and the dark current decreased in the plateau region of RPC, if the Argon ratio was reduced and the ratios of Iso-butane and F134A increased correspondingly, at the cost of increasing the working high voltage.
