The Tibet AS+MD Project; status report 2017

Takita, Masato; Amenomori, M.; Bi, X. J.; Chen, D; Chen, W Y; Cui, S. W.; Danzengluobu,; Ding, L. K.; Feng, C. F.; Feng, Zhaoyang; Feng, Z. Y.; Gou, Q. B.; Guo, Y Q; He, H H; He, Z T; Hibino, Kinya; Hotta, N.; Hu, Haibing; Hu, H. B.; Huang, J.; Jia, H. Y.; Jiang, L.; Kajino, F.; Kasahara, Katsuaki; Katayose, Y.; Kato, Chihiro; Kawata, K.; Kozai, M.; Le, G M; Li, A F; Li, H J; Li, W J; Liu, C.; Liu, J S; Liu, M Y; Lu, H; Meng, X. R.; Miyazaki, T.; Mizutani, K.; Munakata, K.; Nakajima, T.; Nakamura, Y.; Nanjo, H.; Nishizawa, M.; Niwa, T.; Ohnishi, Munehiro; Ohta, T.; OZAWA, Shunsuke; Qian, X. L.; Qu, X. B.; Saito, T.; Saito, T. Y.; Sakata, M.; Sako, T. K.; Shao, J.; Shibata, M.; Shiomi, Atsushi; Shirai, T.; Sugimoto, H.; Tan, Y. H.; Tateyama, N.; Torii, S.; Tsuchiya, H.; Udo, Shigeharu; Wang, H.; Wu, H. R.; Xue, L.; Yamamoto, Y.; Yamauchi, K.; Yang, Z.; Yuan, A. F.; Yuda, T.; Zhai, L. M.; Zhang, H. M.; Zhang, J. L.; Zhang, Y.; Zhang, Yi; Zhang, Ying; na, Zhaxisangzhu; Zhou, X. X.; on beahlf of the Tibet ASgamma Collaboration,

doi:10.22323/1.301.0831

Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Gamma-Ray Astronomy. GA-instrumentation

The Tibet AS+MD Project; status report 2017

M. Takita*, M. Amenomori, X.J. Bi, D. Chen, W.Y. Chen, S.W. Cui, Danzengluobu, L.K. Ding, C.F. Feng, Z. Feng, Z.Y. Feng, Q.B. Gou, Y.Q. Guo, H.H. He, Z.T. He, K. Hibino, N. Hotta, H. Hu, H.B. Hu, J. Huang, H.Y. Jia, L. Jiang, F. Kajino, K. Kasahara, Y. Katayose, C. Kato, K. Kawata, M. Kozai, G.M. Le, A.F. Li, H.J. Li, W.J. Li, C. Liu, J.S. Liu, M.Y. Liu, H. Lu, X.R. Meng, T. Miyazaki, K. Mizutani, K. Munakata, T. Nakajima, Y. Nakamura, H. Nanjo, M. Nishizawa, T. Niwa, M. Ohnishi, T. Ohta, S. Ozawa, X.L. Qian, X.B. Qu, T. Saito, T.Y. Saito, M. Sakata, T.K. Sako, J. Shao, M. Shibata, A. Shiomi, T. Shirai, H. Sugimoto, Y.H. Tan, N. Tateyama, S. Torii, H. Tsuchiya, S. Udo, H. Wang, H.R. Wu, L. Xue, Y. Yamamoto, K. Yamauchi, Z. Yang, A.F. Yuan, T. Yuda, L.M. Zhai, H.M. Zhang, J.L. Zhang, Y. Zhang, Y. Zhang, Y. Zhang, Z. Na, X.X. Zhou and on beahlf of the Tibet ASgamma Collaborationet al. (click to show)

*: corresponding author

Full text: pdf

Pre-published on: August 18, 2017

Published on: August 03, 2018

Abstract

We built a large (approximately 4,000 m**2) water　Cherenkov-
type muon detector array under the existing Tibet air shower array at
4,300 m above sea level, to observe 10-1000 TeV gamma rays from
cosmic-ray accelerators in our Galaxy with wide field of view
at very low background level. A gamma-ray induced air shower has
significantly less muons compared with a cosmic-ray induced one.
Therefore, we can effectively discriminate between primary gamma rays
and cosmic-ray background events by means of counting number of
muons in an air shower event by the muon detector array. We make a
status report on the experiment.

DOI: https://doi.org/10.22323/1.301.0831

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