Radon removal from gaseous xenon with activated charcoal

K. Abe, K. Hieda, K. Hiraide, S. Hirano, Y. Kishimoto, K. Kobayashi, Y. Koshio, J. Liu, K. Martens, S. Moriyama, M. Nakahata, H. Nishiie, H. Ogawa, H. Sekiya, A. Shinozaki, Y. Suzuki, O. Takachio, A. Takeda, K. Ueshima, D. UmemotoM. Yamashita, K. Hosokawa, A. Murata, K. Otsuka, Y. Takeuchi, F. Kusaba, D. Motoki*, K. Nishijima, S. Tasaka, K. Fujii, I. Murayama, S. Nakamura, Y. Fukuda, Y. Itow, K. Masuda, Y. Nishitani, H. Takiya, H. Uchida, Y. D. Kim, Y. H. Kim, K. B. Lee, M. K. Lee, J. S. Lee

*この研究の対応する著者

研究成果: Article査読

27 被引用数 (Scopus)

抄録

Many low background experiments using xenon need to remove radioactive radon to improve their sensitivities. However, no method of continually removing radon from xenon has been described in the literature. We studied a method to remove radon from xenon gas through an activated charcoal trap. From our measurements we infer a linear relationship between the mean propagation velocity vRn of radon and vXe of xenon in the trap with vRn/vXe=(0.96±0.10)×10-3 at -85 °C. As the mechanism for radon removal in this charcoal trap is its decay, knowledge of this parameter allows us to design an efficient radon removal system for the XMASS experiment. The verification of this system found that it reduces radon by a factor of 0.07, which is in line with its expected average retention time of 14.8 days for radon.

本文言語English
ページ(範囲)50-57
ページ数8
ジャーナルNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
661
1
DOI
出版ステータスPublished - 2012 1月 1
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 器械工学

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