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ID 115551
Author
Kanemitsu, Y. Tokushima University
Chernyak, D. The University of South Dakota
Ejiri, Hiroyasu Osaka University
Hata, K. Tokushima University
Hazama, Ryuta Osaka Sangyo University
Ikeda, H. Tohoku University
Imagawa, K. I.S.C. Lab.
Inoue, K. Tohoku University
Kozlov, A. The University of Tokyo
Shima, T. Osaka University
Takemoto, Y. University of Tokyo
Umehara, S. Osaka University
Yasuda, K. I.S.C. Lab.
Yoshida, S. Osaka University
Content Type
Journal Article
Description
Direct search for dark matter is one of the most important problems in astrophysics. Significant signal for dark matter will be a hint to clarify the origin of the universe. Only DAMA/LIBRA experiment with NaI(Tl) detector has ever suggested the presence of dark matter signal. Verifying the DAMA/LIBRA result by a NaI(Tl) detector is urgent and important task. We have tried to purify NaI(Tl) crystal to search for dark matter. In this presentation, the present status of purification will be discussed. The concentration of potassium is successfully reduced to desired sensitivity. The 210Pb, which is difficult to reduce, has been reduced effectively. Present status of low background measurement in Kamioka observatory will be shown.
Journal Title
Journal of Physics: Conference Series
ISSN
17426596
17426588
NCID
AA12839617
Publisher
IOP Publishing
Volume
1468
Start Page
012054
Published Date
2020-03-20
Rights
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence(https://creativecommons.org/licenses/by/3.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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DOI (Published Version)
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language
eng
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departments
Science and Technology