Design and performances of electromagnetic particle detector for LHAASO-KM2A
Design and performances of electromagnetic particle detector for LHAASO-KM2A
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DOI：
10.1088/1674-1137/38/3/036002
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发表时间：
2014-03
影响因子：
3.6
通讯作者：
Zhao Jing;L. Jia;Sheng Xiang-dong;He Hui-hai;Guo Yi-qing;Hou Chao;Lü Hong-Kui
中科院分区：
文献类型：
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作者：
Zhao Jing;L. Jia;Sheng Xiang-dong;He Hui-hai;Guo Yi-qing;Hou Chao;Lü Hong-Kui
在大型高空空气簇射天文台（LHAASO）项目中，1平方公里的广泛空气簇射阵列（KM 2A）是有效面积最大的探测器阵列。它由5635个电磁粒子探测器（ED）和1221个μ子探测器（MD）组成。每个艾德由16个闪烁体片组成，这些闪烁体片通过波长偏移光纤读出，这些波长偏移光纤通过25 mm PMT捆绑和连接。详细讨论了该装置的设计及其光电子产额、时间分辨率和均匀性等性能。建立了整个艾德的装配方案，以保证单个艾德中所有16个瓦片的一致性以及批量生产中所有ED的一致性。
In the Large High Altitude Air Shower Observatory (LHAASO) project, the one kilometer square extensive air shower array (KM2A) is the the largest detector array in terms of effective area. It consists of 5635 electromagnetic particle detectors (EDs) and 1221 muon detectors (MDs). Each ED is composed of 16 scintillator tiles readout by wavelength-shifting fibers that are bundled and attached by a 25 mm PMT. The design of the unit and its performances, such as photoelectron yield, time resolution and uniformity, are discussed in detail. An assembling scheme for the whole ED is established to guarantee the uniformity throughout all 16 tiles in a single ED and all EDs in mass production.