Measurement of radon concentrations at Super-Kamiokande

Y. Takeuchi, K. Okumura, T. Kajita, S. Tasaka, M. Nemoto, Y. Fukuda, H. Okazawa, T. Hayakawa, K. Ishihara, H. Ishino, Y. Itow, J. Kameda, S. Kasuga, K. Kobayashi, Y. Kobayashi, Y. Koshio, M. Miura, M. Nakahata, S. Nakayama, Y. ObayashiA. Okada, N. Sakurai, M. Shiozawa, Y. Suzuki, H. Takeuchi, Y. Totsuka, S. Yamada, M. Earl, A. Habig, E. Kearns, M. D. Messier, K. Scholberg, J. L. Stone, L. R. Sulak, C. W. Walter, M. Goldhaber, T. Barszczak, D. Casper, W. Gajewski, W. R. Kropp, S. Mine, L. R. Price, M. Smy, H. W. Sobel, M. R. Vagins, K. S. Ganezer, W. E. Keig, R. W. Ellsworth, A. Kibayashi, J. G. Learned, S. Matsuno, V. J. Stenger, D. Takemori, T. Ishii, J. Kanzaki, T. Kobayashi, K. Nakamura, K. Nishikawa, Y. Oyama, A. Sakai, M. Sakuda, C. Sasaki, S. Echigo, M. Kohama, A. T. Suzuki, T. J. Haines, E. Blaufuss, B. K. Kim, R. Sanford, R. Svoboda, M. L. Chen, J. A. Goodman, G. W. Sullivan, J. Hill, C. K. Jung, K. Martens, C. Mauger, C. McGrew, E. Sharkey, B. Viren, C. Yanagisawa, W. Doki, M. Kirisawa, S. Inaba, K. Miyano, C. Saji, M. Takahashi, M. Takahata, K. Higuchi, Y. Nagashima, M. Takita, T. Yamaguchi, M. Yoshida, S. B. Kim, M. Etoh, A. Hasegawa, T. Hasegawa, S. Hatakeyama, K. Inoue

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Abstract

Radioactivity from radon is a major background for observing solar neutrinos at Super-Kamiokande. In this paper, we describe the measurement of radon concentrations at Super-Kamiokande, the method of radon reduction, and the radon monitoring system. The measurement shows that the current low-energy event rate between 5.0 MeV and 6.5 MeV implies a radon concentration in the Super-Kamiokande water of less than 1.4 mBq/m3.

Original languageEnglish
Pages (from-to)418-424
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume452
Issue number3-4
DOIs
Publication statusPublished - 1999

Keywords

  • Neutrino
  • Radon
  • Rn
  • Super-Kamiokande

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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  • Cite this

    Takeuchi, Y., Okumura, K., Kajita, T., Tasaka, S., Nemoto, M., Fukuda, Y., Okazawa, H., Hayakawa, T., Ishihara, K., Ishino, H., Itow, Y., Kameda, J., Kasuga, S., Kobayashi, K., Kobayashi, Y., Koshio, Y., Miura, M., Nakahata, M., Nakayama, S., ... Inoue, K. (1999). Measurement of radon concentrations at Super-Kamiokande. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 452(3-4), 418-424. https://doi.org/10.1016/S0370-2693(99)00311-1