Purification of the NaI(Tl) crystal for dark matter search project PICOLON

Y. Kanemitsu, D. Chernyak, H. Ejiri, K. Fushimi, K. Hata, R. Hazama, H. Ikeda, K. Imagawa, K. Inoue, A. Kozlov, R. Orito, T. Shima, Y. Takemoto, S. Umehara, K. Yasuda, S. Yoshida

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


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.

Original languageEnglish
Article number012054
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2020 Mar 20
Event16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019 - Toyama, Japan
Duration: 2019 Sept 92019 Sept 13


Dive into the research topics of 'Purification of the NaI(Tl) crystal for dark matter search project PICOLON'. Together they form a unique fingerprint.

Cite this