Highly segmented inorganic crystal has been shown to have good performance for dark matter search. The energy resolution of ultra thin and large area NaI(Tl) scintillator has been developed. The estimated sensitivity for spin-dependent excitation of 127I was discussed. The recent status of low background measurement at Oto Cosmo Observatory is reported
@article{arxiv.0711.3053,
title = {PICO-LON Project for WIMPs search},
author = {Ken-Ichi Fushimi and Kensuke Yasudai and Yuuki Kamedai and Hiroyasu Ejiri and Ryuta Hazama and Kayoko Ichihara and Kyoshiro Imagawa and Hiroshi Ito and Norihiko Koori and Hidehito Nakamura and Shintaro Nakayama and Masaharu Nomachi and Tatsushi Shima and Saori Umehara and Sei Yoshida},
journal= {arXiv preprint arXiv:0711.3053},
year = {2008}
}