Demonstration of hadronic cosmic-ray rejection power by a water Cherenkov underground muon detector with the Tibet air shower array

M. Amenomori,X. J. Bi,D. Chen,S. W. Cui, Danzengluobu,L. K. Ding,X. H. Ding, C. Fan,C. F. Feng,Zhaoyang Feng,Z. Y. Feng,X. Y. Gao,Q. X. Geng,Q. B. Gou,H. W. Guo,H. H. He, M. He,K. Hibino,N. Hotta,Haibing Hu,H. B. Hu,J. Huang,Q. Huang,H. Y. Jia,L. Jiang,F. Kajino, Xi,K. Kasahara,Y. Katayose, C. Kato, K. Kawata,Labaciren, G. M. Le, A. F. Li, H. C. Li,J. Y. Li, C. Liu,Y.-Q. Lou, H. Lu,X. R. Meng, K. Mizutani, J. Mu, K. Munakata,A. Nagai,H. Nanjo, M. Nishizawa,M. Ohnishi,I. Ohta,T. Saito,T. Y. Saito,T. K. Sako, M. Shibata,A. Shiomi,T. Shirai,H. Sugimoto,M. Takita,Y. H. Tan,N. Tateyama,S. Torii,H. Tsuchiya,S. Udo,B. Wang,H. Wang, Y. Wang,Y. G. Wang, H. R. Wu, L. Xue, C. T. Yan,X. C. Yang,S. Yasue,Z. H. Ye,G. C. Yu,A. F. Yuan,T. Yuda, H. M. Zhang,J. L. Zhang,N. J. Zhang,X. Y. Zhang,Y. Zhang,Yi Zhang,Ying Zhang

semanticscholar（2009）

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摘要

We demonstrate excellent hadronic cosmic-ray rejection power by a 100 m water Cherenkov underground muon detector constructed in late fall of 2007, under the Tibet air shower array located at 4300 m above sea level, in Tibet, China. Our Monte Carlo simulation reproduces cosmic-ray data quite well. The water Cherenkov technique together with the Tibet air shower array will provide us with a very low-background and low-cost cosmic gamma-ray observation above 10 TeV, assuming a 2 M.AMENOMORI et al. DEMONSTRATION OF HADRONIC COSMIC-RAY REJECTION reasonable muon detector area.

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