A new project to search for high energy gamma ray point souces in Tibet

K. Hibino, F. Kajino, M. Nishizawa, M. Ohnishi, To Saito, M. Shima, M. Sakata, Y. Yamamoto, M. Amenomori, H. Nanjo, T. Shirai, N. Tateyama, Shoji Torii, H. Sugimoto, K. Taira, K. Kasahara, T. Yuda, K. Mizutani, N. Hotta, I. OhtaM. Shibata, J. R. Ren, H. Y. Dai, H. H. Kuang, A. X. Huo, S. L. Lu, S. Su, Y. H. Tan, Y. X. Wang, C. R. Wang, M. He, N. J. Chang, P. Y. Cao, J. Y. Li, B. T. Zou, G. Z. Bai, Z. H. Liu, G. J. Li, Q. X. Geng, R. D. He, W. D. Zhou, S. Z. Wang

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Abstract

A new experiment to observe gamma rays around 100 TeV at Yanbajing (4300 m) in Tibet, China is planned by a collaboration between China and Japan. To study the feasibility of this experiment a test array was built at Mt. Norikura in Japan. Preliminary results from a search for gamma rays from Cyg X-3 and Her X-1 observed by this air shower array showed the upper limit fluxes of 5.6 × 10-13cm-2s-1 and 3.0 × 10-13cm-2s-1 with a 95% confidence level above TeV, respectively. At the first step experiment we will set up 65 scintillation counters in Tibet. An angular resolution of the apparatus will be better than 1° at an energy of 100 TeV. The detectors are monitored by a nitrogen laser system automatically which guarantees a long term quality of the data.

Original languageEnglish
Pages (from-to)219-227
Number of pages9
JournalNuclear Physics B (Proceedings Supplements)
Volume10
Issue number2
DOIs
Publication statusPublished - 1989
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Hibino, K., Kajino, F., Nishizawa, M., Ohnishi, M., Saito, T., Shima, M., Sakata, M., Yamamoto, Y., Amenomori, M., Nanjo, H., Shirai, T., Tateyama, N., Torii, S., Sugimoto, H., Taira, K., Kasahara, K., Yuda, T., Mizutani, K., Hotta, N., ... Wang, S. Z. (1989). A new project to search for high energy gamma ray point souces in Tibet. Nuclear Physics B (Proceedings Supplements), 10(2), 219-227. https://doi.org/10.1016/0920-5632(89)90057-1