| Project Area | Extreme quantum world opened up by atoms -towards establishing comprehensive picture of the universe based on particle physics- |
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| Project/Area Number |
21104004
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
ASAHI Koichiro 東京工業大学, 理工学研究科, 教授 (80114354)
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| Co-Investigator(Kenkyū-buntansha) |
UENO Hideki 独立行政法人理化学研究所, 仁科加速器研究センター, 主任研究員 (50281118)
MATSUO Yukari 法政大学, 理工学部, 教授 (50231593)
FUKUYAMA Takeshi 大阪大学, 核物理研究センター, 協同研究員 (40167622)
YOSHIMI Akihiro 岡山大学, 極限量子研究コア, 准教授 (40333314)
FURUKAWA Takeshi 首都大学東京, 大学院理工学研究科, 助教 (30435680)
UCHIDA Makoto 東京工業大学, 大学院理工学研究科, 助教 (90397042)
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| Co-Investigator(Renkei-kenkyūsha) |
YABUSAKI Tsutomu (60026127)
SAKEMI Yasuhiro 東北大学, サイクロトロン・ラジオアイソトープセンター, 教授 (90251602)
YOSHIMI Akihiro 岡山大学, 極限量子研究コア, 准教授 (40333314)
FURUKAWA Takeshi 首都大学東京, 大学院理工学研究科, 助教 (30435680)
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| Project Period (FY) |
2009-07-23 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥173,420,000 (Direct Cost: ¥133,400,000、Indirect Cost: ¥40,020,000)
Fiscal Year 2013: ¥24,050,000 (Direct Cost: ¥18,500,000、Indirect Cost: ¥5,550,000)
Fiscal Year 2012: ¥36,270,000 (Direct Cost: ¥27,900,000、Indirect Cost: ¥8,370,000)
Fiscal Year 2011: ¥40,300,000 (Direct Cost: ¥31,000,000、Indirect Cost: ¥9,300,000)
Fiscal Year 2010: ¥40,300,000 (Direct Cost: ¥31,000,000、Indirect Cost: ¥9,300,000)
Fiscal Year 2009: ¥32,500,000 (Direct Cost: ¥25,000,000、Indirect Cost: ¥7,500,000)
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| Keywords | 素粒子実験 / 原子核実験 / 原子EDM / シッフモーメント / CP対称性 / 原子核構造 / EDM / CP非保存 / Schiffモーメント / 反磁性原子 / スピンメーザー / 実験核物理 / 精密周波数計測 / 電気双極子能率 / CPの破れ / 核スピン偏極 / スピン歳差 / 光ポンピング / フィードバック制御 |
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| Research Abstract |
The present study aims at a high-precision search for the electric dipole moment (EDM) of 129Xe atom which, if finite, would provide a clear evidence for the presence of new physics beyond the standard model of elementary particles. To this end, an active feedback nuclear spin maser, of which the present research group had contrived an idea and made a proof-of-principle experiment, was brought into operation for the precession frequency determination. Developments were done on the field current stabilization, magnetic shielding and environmental field compensation, and as a result the frequency precision of 7.9 nHz was achieved which would correspond to a factor of 5 improvement in the EDM sensitivity. In addition, a co-magnetometer taking advantage of simultaneous masing of 3He spins was successfully incorporated to the 129Xe maser system. By uniting all these achievements together, the basis for the 129Xe EDM search experiment will soon be established.
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