CAJ | 학술논문

羊八井ARGO实验正处于探测器安装及试运行阶段,整个阵列由1848个工作于流光模式的单层RPC探测器构成.依靠RPC读出条的数字读出只能测量小簇射事例的次级粒子数目,为了实现逐事例区分"膝区"原初宇宙线的成分及其能谱研究,对探测器增加了模拟读出,以实现对EAS芯区高达104/m2的次级粒子数密度的精确测量.本文对RPC探测器性能及大动态范围模拟读出板的信号和性能做了初步的分析和研究.
양팔정ARGO실험정처우탐측기안장급시운행계단,정개진렬유1848개공작우류광모식적단층RPC탐측기구성.의고RPC독출조적수자독출지능측량소족사사례적차급입자수목,위료실현축사례구분"슬구"원초우주선적성분급기능보연구,대탐측기증가료모의독출,이실현대EAS심구고체104/m2적차급입자수밀도적정학측량.본문대RPC탐측기성능급대동태범위모의독출판적신호화성능주료초보적분석화연구.
The YBJ-ARGO experiment is presently in the mounting and debugging phase at the Yangbajing High Altitude Cosmic Ray Laboratory,Tibet,China.The YBJ-ARGO EAS array is composed of bakelite RPCs which operate in the streamer mode.The digital read-out,performed by means of read-out strips,allows measuring the secondary particle number of small size air showers.To extend the dynamic range of the secondary particle number density up to 104/m2,thus to measure the component and spectrum of primary cosmic rays at the knee region,it is necessary to implement the analog read-out of the RPC,which is achieved by encapsulating each RPC with two Big PADs.This paper reports on the primary analysis of the analog read-out signal of the Big PAD under different gas mixtures,including the amplitude distribution and ratio of the single streamer signal.