Development of Yangbajing air shower core detector for a new EAS hybrid experiment
Development of Yangbajing air shower core detector for a new EAS hybrid experiment
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DOI：
10.1088/1674-1137/39/8/086004
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发表时间：
2015-01
影响因子：
3.6
通讯作者：
Jinsheng Liu;Jing Huang;Din Chen;Ying Zhang;L. Zhai;Xu Chen;Xiao-Bin Hu;Yuhui Lin;Xue-Yao Zhang;C. Feng;H. Jia;Xunxiu Zhou;Danzengluobu;Tian-lu Chen;Haijin Li;Maoyuan Liu;A. Yuan
中科院分区：
文献类型：
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作者：
Jinsheng Liu;Jing Huang;Din Chen;Ying Zhang;L. Zhai;Xu Chen;Xiao-Bin Hu;Yuhui Lin;Xue-Yao Zhang;C. Feng;H. Jia;Xunxiu Zhou;Danzengluobu;Tian-lu Chen;Haijin Li;Maoyuan Liu;A. Yuan
针对“膝”能区宇宙线化学成分的观测，我们正在研制新型空气簇射核心探测器（YAC，羊八井空气簇射核心探测器阵列），架设在中国西藏羊八井（东经90.522°，北纬30.102°，海拔4300米，大气深度：606 g/m2）。 YAC与西藏空气簇射阵列（Tibet-III）和地下水切伦科夫介子探测器阵列（MD）一起进行混合实验。每个 YAC 探测器单元由 3.5 厘米厚的铅板和一个闪烁计数器组成，闪烁计数器用于检测空气喷淋核心中高能粒子引起的爆发大小。脉冲串大小的测量范围为 1 MIP（最小电离粒子）至 106 MIP。该实验第一阶段名为“YAC-I”，由16个尺寸为40 cm×50 cm的YAC探测器组成，分布在有效面积为10 m2的网格中。 YAC-I 用于检查强子相互作用模型。实验的第二阶段称为“YAC-II”，由124个YAC探测器组成，覆盖范围约为500平方米。内部100个80 cm×50 cm探测器以10×10矩阵部署，间距1.9 m；外围24个100 cm×50 cm的探测器分布在这些探测器周围，以拒绝簇射核心远离YAC-II阵列的非核心事件。 YAC-II用于研究初级宇宙线成分，特别是获得5×1013 eV至1016 eV之间的质子、氦和铁原子核的能谱，覆盖“膝盖”，并与100 TeV左右能量的直接观测相关。我们在本文中介绍了 YAC-II 的设计和性能。
Aiming at the observation of cosmic-ray chemical composition in the "knee" energy region, we have been developing a new type of air-shower core detector (YAC, Yangbajing Air shower Core detector array) to be set up at Yangbajing (90.522° E, 30.102° N, 4300 m above sea level, atmospheric depth: 606 g/m2) in Tibet, China. YAC works together with the Tibet air-shower array (Tibet-III) and an underground water Cherenkov muon detector array (MD) as a hybrid experiment. Each YAC detector unit consists of lead plates of 3.5 cm thickness and a scintillation counter which detects the burst size induced by high energy particles in the air-shower cores. The burst size can be measured from 1 MIP (Minimum Ionization Particle) to 106 MIPs. The first phase of this experiment, named "YAC- I", consists of 16 YAC detectors each with a size of 40 cm×50 cm and distributed in a grid with an effective area of 10 m2. YAC- I is used to check hadronic interaction models. The second phase of the experiment, called "YAC- II", consists of 124 YAC detectors with coverage of about 500 m2. The inner 100 detectors of 80 cm×50 cm each are deployed in a 10×10 matrix with a 1.9 m separation; the outer 24 detectors of 100 cm×50 cm each are distributed around these to reject non-core events whose shower cores are far from the YAC- II array. YAC- II is used to study the primary cosmic-ray composition, in particular, to obtain the energy spectra of protons, helium and iron nuclei between 5×1013 eV and 1016 eV, covering the "knee" and also connected with direct observations at energies around 100 TeV. We present the design and performance of YAC- II in this paper.