Performance test of the electromagnetic particle detectors for the LHAASO experiment

Performance test of the electromagnetic particle detectors for the LHAASO experiment

The Large High Altitude Air Shower Observatory (LHAASO) is a new generation hybrid cosmic ray observatory which is expected to reveal the mystery of the origin of cosmic rays. The one square kilometer array (KM2A) consisting of 5195 Electromagnetic particle Detectors (ED) and 1188 Muon Detectors (MD...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2021-06, Vol.1001, p.165193, Article 165193
Hauptverfasser: An, Q., Bai, Y.X., Bastieri, D., Bi, X.J., Bi, Y.J., Cai, H., Cai, J.T., Chen, T.L., Chen, X.L., Cui, X.H., Cui, Y.D., Dai, B.Z., Danzengluobu, della Volpe, D., Fan, J.H., Fan, Y.Z., Fang, J., Fang, K., Feng, C.F., Feng, S.H., Feng, Y.L., Gao, B., Gao, C.D., Geng, L.S., Gong, G.H., Guo, J.G., Guo, Y.Y., He, J.C., Heller, M., Hor, Y.K., Hou, C., Hu, H.B., Hu, S., Hu, S.C., Hu, X.J., Huang, X.T., Ji, F., Jia, H.Y., Li, B., Li, C., Li, F., Li, H., Li, H.C., Li, J., Li, W.L., Li, Y., Liu, H.D., Liu, J.L., Liu, R.Y., Long, W.J., Lu, R., Lv, H.K., Ma, X.H., Mao, J.R., Mitthumsiri, W., Montaruli, T., Pei, Z.Y., Qi, M.Y., Song, H.C., Sun, Q.N., Sun, X.N., Tian, W.W., Wang, B.D., Wang, W., Wang, X.G., Wang, X.J., Wang, X.Y., Wang, Y.D., Wei, J.J., Wen, T., Wu, C.Y., Xia, J., Xiao, H.B., Xin, G.G., Xing, Y., Xu, D.L., Xu, R.X., Xue, L., Yang, J.Y., Yang, R.Z., Yang, S.B., Yao, Z.G., Ye, Y.M., Yin, L.Q., You, X.H., Yu, Y.H., Yuan, Q., Zeng, H.D., Zhang, L.X., Zhang, P.P., Zhang, S.R., Zhang, X., Zhao, J., Zhao, X., Zhou, B., Zhou, H., Zhou, R., Zhou, X.X., Zhu, H.
Format: Artikel
Sprache:eng
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Cosmic ray
Electromagnetic particle detectors
KM2A
LHAASO
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Beschreibung
Zusammenfassung:The Large High Altitude Air Shower Observatory (LHAASO) is a new generation hybrid cosmic ray observatory which is expected to reveal the mystery of the origin of cosmic rays. The one square kilometer array (KM2A) consisting of 5195 Electromagnetic particle Detectors (ED) and 1188 Muon Detectors (MD) is a sub-array of LHAASO. The EDs are designed to measure the density and arriving time of the secondary particles of extensive air showers. The performance of the EDs is tested for the quality control after construction in the laboratory at sea level. In this paper, the performance of more than four thousands EDs is summarized. The performance of all tested EDs meets the design requirements with the time resolution of 1.6 ns, the detection efficiency of 97.8%, charge resolution for single particle of 18.5% and count rate around 480 Hz. Furthermore, one ED is singled out for monitoring of the long-term stability over a period of nearly two years from December 2018 to November 2020.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2021.165193