TY - JOUR
T1 - PICOLON dark matter search ∼ Development of highly redio-pure NaI(Tl) scintilltor
AU - Fushimi, Ken Ichi
AU - Chernyak, Dmitry
AU - Ejiri, Hiroyasu
AU - Hata, Kazumi
AU - Hazama, Ryuta
AU - Hirata, Shoko
AU - Iida, Takashi
AU - Ikeda, Haruo
AU - Inoue, Kunio
AU - Imagawa, Kyoshiro
AU - Kanemitsu, Yuta
AU - Kozlov, Alexandle
AU - Orito, Reiko
AU - Shima, Tatsushi
AU - Takemoto, Yasuhiro
AU - Umehara, Saori
AU - Yoshida, Sei
N1 - Funding Information:
We acknowledge the support of the Kamioka Mining and Smelting Company. This work was supported by JSPS KAKENHI Grant No. 26104008, 19H00688, and Tokushima University.
Publisher Copyright:
© 2020 Published under licence by IOP Publishing Ltd.
PY - 2020/3/20
Y1 - 2020/3/20
N2 - The PICOLON project is developing a high purity NaI(Tl) crystal by optimizing the purification methods. The reduction method for 40K was established and we got sufficiently pure NaI(Tl) crystal for 40K. On the other hand, the concentration of 210Pb is still higher than our goal. The investigation is now in progress to fix the origin of the contamination. The construction of the second phase detector system of PICOLON detector will be started in 2020 spring. The total mass of the second phase is about 54 kg. The background level by the test measurement using a single module is reported.
AB - The PICOLON project is developing a high purity NaI(Tl) crystal by optimizing the purification methods. The reduction method for 40K was established and we got sufficiently pure NaI(Tl) crystal for 40K. On the other hand, the concentration of 210Pb is still higher than our goal. The investigation is now in progress to fix the origin of the contamination. The construction of the second phase detector system of PICOLON detector will be started in 2020 spring. The total mass of the second phase is about 54 kg. The background level by the test measurement using a single module is reported.
UR - http://www.scopus.com/inward/record.url?scp=85083113719&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85083113719&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1468/1/012057
DO - 10.1088/1742-6596/1468/1/012057
M3 - Conference article
AN - SCOPUS:85083113719
SN - 1742-6588
VL - 1468
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012057
T2 - 16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019
Y2 - 9 September 2019 through 13 September 2019
ER -