{"paper":{"title":"Development of a low-alpha-emitting {\\mu}-PIC for NEWAGE direction-sensitive dark-matter search","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"Atsuhiko Ochi, Hirohisa Ishiura, Kentaro Miuchi, Kiseki Nakamura, Miki Nakazawa, Ryosuke Taishaku, Ryota Yakabe, Takashi Hashimoto, Tomonori Ikeda, Yasuo Takeuchi","submitted_at":"2017-07-31T07:45:45Z","abstract_excerpt":"NEWAGE is a direction-sensitive dark-matter-search experiment that uses a micro-patterned gaseous detector, or {\\mu}-PIC, as the readout. The main background sources are {\\alpha}-rays from radioactive contaminants in the {\\mu}-PIC. We have therefore developed a low-alpha-emitting {\\mu}-PICs and measured its performances. We measured the surface {\\alpha}-ray emission rate of the {\\mu}-PIC in the Kamioka mine using a surface {\\alpha}-ray counter based on a micro TPC."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.09744","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}