Calibration of the Yangbajing air-shower core detector
Calibration of the Yangbajing air-shower core detector
复制标题
羊八井风淋芯探测器的标定
DOI：
10.1088/1748-0221/15/07/p07014
复制
发表时间：
2020
影响因子：
1.3
通讯作者：
Fang J. H.
中科院分区：
文献类型：
--
作者：
Zhang Y.;Huang J.;Chen D.;Zhai L. M.;Chen X.;Lin Y. H.;Fang J. H.
为了观测“膝”能区宇宙线的化学成分，研制了一种新型的空气簇射芯探测器（YAC，羊八井空气簇射芯阵列），该探测器由3.5cm厚的铅板和0.5m2面积的闪烁计数器组成，安装在海拔4300 m的羊八井。中国西藏自2014年以来YAC探测器的主要目的是通过探测次级粒子穿过铅板后在空气簇射（AS）核产生的高能电磁粒子来分离初级宇宙线质量。为了精确测量簇射粒子数，本文描述了YAC探测器的定标过程。结果表明，YAC闪烁探测器的输出与入射粒子数在5×106 MIPs以下具有良好的线性关系，非线性小于3%。这样宽的动态范围表明，YAC实验有可能获得覆盖和高于“膝”能区的初级质量组成和能谱。
Aiming at the observation of cosmic-ray chemical composition at the `knee' energy region, a new type air-shower core detector (YAC, Yangbajing Air shower Core array) consisting of a lead plate of 3.5 cm thick and a scintillation counter with an area of 0.5 m2 has been developed and set up at Yangbajing, 4300 m a.s.l. in Tibet, China since 2014. The main purpose of YAC detector is to separate primary cosmic-ray mass by detecting high energy electromagnetic particles at the air-shower (AS) core generated by the secondary particles after passing through the lead plate. In order to precisely measure the number of shower particles, the calibration procedure of the YAC detector is described in this paper. We found that the linear relationship between YAC scintillation detector output and incident particles is good below 5×106 MIPs while the non-linearity is less than 3%. Such a wide dynamic range shows that YAC experiment may make it possible to obtain the primary mass composition and energy spectrum covering and above the `knee' energy region.