| Project/Area Number |
20340054
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Japan Atomic Energy Agency (2010)
Kyoto University (2008-2009) |
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Principal Investigator |
IMAI Kenichi 独立行政法人日本原子力研究開発機構, 先端基礎研究センター, 研究員 (70025493)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUBARA Akira 京都大学, 低温科学研究センター, 准教授 (00229519)
|
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| Co-Investigator(Renkei-kenkyūsha) |
MATSUKI Seisi 立命館大学, 総合理工学研究機構, 研究員 (50037941)
SAWADA Anju 京都大学, 低温科学研究センター, 教授 (90115577)
FUNAHASHI Haruhiko 京都大学, 人間環境学研究科, 教授 (00283581)
YAMAMOTO Katsuji 京都大学, 工学研究科, 教授 (90191395)
|
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2010: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2009: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2008: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
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| Keywords | ダークマター / アクシオン / リュードベリ原子 / マイクロ波 / Rydberg原子 / 極低温 / 素粒子 |
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| Research Abstract |
Axion is an unkown particle and a candidate of the dark matter in the universe. We have constructed a high sensitivity micro-wave detector with use of Rydberg atoms for the detection of a dark matter axion. It consists of a superconducting magnet, a dilution refrigerator and high-precision laser system to detect a micro-wave photon converted from an axion. We have measured energy levels of Rydberg states for K atoms, and made the whole detector system ready for the search of dark matter axion. We have also found a new method to greatly improve S/N of axion search which utilize a cooled and bunched beam of Rydberg atoms.
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