Abstract
Dark matter search project KamLAND-PICO is proposed. The first phase of the project aims to verifying the annual modulation signal which has been reported by DAMA/LIBRA. The last phase of the project aims to determining the type of interaction between WIMPs and nucleus. The thin and wide area NaI(Tl) detector PICO-LON has been developed to determine the type of WIMPs interaction. The good performance of PICO-LON detector was obtained. The energy threshold was as low as 2 keVee and the the energy resolution was as small as 25% at 60 keVee. The highly pure NaI(Tl) crystal has been developed in collaboration with the Japanese developer. The purity of U and Th chain contaminants have been reduced to the order of a few tens of ppt. It should be remarked that the concentration of 210Pb was reduced to about 60 μBq/kg. The sensitivity to spin-independent WIMPs are discussed by applying 170 modules of NaI(Tl) with the dimension of 5 inch ρ× 5 inch.
Original language | English |
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Pages (from-to) | 67-73 |
Number of pages | 7 |
Journal | Physics Procedia |
Volume | 61 |
DOIs | |
Publication status | Published - 2015 |
Event | 13th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2013 - , United States Duration: 2013 Sep 8 → 2013 Sep 13 |
Keywords
- NaI(Tl)
- WIMPs search
ASJC Scopus subject areas
- Physics and Astronomy(all)