Fundamental research to detect exotic partilces using interferometer

• Project/Area Number: 15K05099
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: University of Toyama (2016-2017); The University of Tokyo (2015)
• Principal Investigator: Yamamoto Kazuhiro 富山大学, 大学院理工学研究部(理学), 准教授 (00401290)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 宇宙線（実験） / 未知素粒子探索 / 低温 / 精密測定 / 干渉計

Outline of Final Research Achievements

Search and discovery of exotic particles, which is predicted but not detected yet so far are significant in particle physics and cosmology.
Main purpose of this study is research and development of key technologies to detect such particles using Michelson interferometer. In previous methods, signal of detector is generated by energy deposition by exotic particles. In this investigation, new method (by momentum deposition) is considered. The sensitivity is 10 times better than those of previous methods.
Research and development of components of detector (assembly of mirror and its suspension, cooling test, estimation of noise and so on) was almost finished. The next step is to assemble Michelson interferometer and test run for observation.

Research Products

• [Journal Article] Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope (2017)
  • Author(s): Yuta Michimura,..., Kazuhiro Yamamoto, Takaaki Yokozawa and Hirotaka Yuzurihara
  • Journal Title: Classical and Quantum Gravity Volume: 34 Pages: 225001-225001
  • Peer Reviewed
• [Presentation] Status of KAGRA cryogenic suspension (2018)
  • Author(s): Kazuhiro Yamamoto
  • Organizer: the New WindowS on the Universe project (NEWS) General Meeting 2018 INFN Pisa, Pisa, Italy, 14 March 2018
  • Int'l Joint Research
• [Presentation] KAGRA 低温系の現状III(KAGRA site での低温鏡懸架系のインストールと冷却) (2018)
  • Author(s): 山元一広、井上優貴、上田綾子、牛場崇文、越智聡郎、木村誠宏、Rahul Kumar、 鈴木敏一、高田卓、田中宏樹、寺嶋眞一、都丸隆行、生井義、萩原綾子、長谷川 邦彦、福永真士、Helios Vocca、宮本昂拓、村上巌、山田智宏、宍戸高治、吉岡 聡也、内山隆、梶田隆章、三代木伸二
  • Organizer: 日本物理学会第73 回大会年次大会、東京理科大学野田キャンパス、2018 年3 月22 日
• [Presentation] Cryogenic development in KAGRA (2017)
  • Author(s): Kazuhiro Yamamoto
  • Organizer: Gravitational Wave Advanced Detector Workshop, Reef view hotel, Hamilton island, Queendland, Australia, 10 May 2017
  • Int'l Joint Research
• [Presentation] Radiation shield vibration measurement at KAGRA site (2017)
  • Author(s): Kazuhiro Yamamoto
  • Organizer: Gravitational Wave Advanced Detector Workshop, Reef view hotel, Hamilton island, Queendland, Australia, 10 May 2017
  • Int'l Joint Research
• [Presentation] ”KAGRA の現状と富山大学” (2017)
  • Author(s): 山元一広
  • Organizer: 第4 回超精密周波数計測とその比較技術による回路技術調査専門委員会、富山大学、 2017 年10 月11 日
• [Presentation] Performance test of KAGRA cryostat at site (2017)
  • Author(s): Kazuhiro Yamamoto
  • Organizer: ELiTES: 5th general meeting
  • Place of Presentation: University of Toyama, Toyama, Japan
  • Int'l Joint Research
• [Presentation] KAGRA 低温系の現状II (2016)
  • Author(s): 山元 一広 et al.
  • Organizer: 日本物理学会2016 年秋季大会
  • Place of Presentation: 宮崎大学（宮崎県宮崎市）
• [Presentation] Overview of the 20K configuration (2016)
  • Author(s): Kazuhiro Yamamoto
  • Organizer: Gravitational Wave Advanced Detector Workshop
  • Place of Presentation: Isola d’Elba, Italy
  • Int'l Joint Research
• [Presentation] Cryogenic Payload Issues (2015)
  • Author(s): Kazuhiro Yamamoto
  • Organizer: ELiTES: 4th general meeting
  • Place of Presentation: Ookayama campus, Tokyo Institute of Technology, Mugero-ku, Tokyo, Japan
  • Year and Date: 2015-12-02
  • Int'l Joint Research
• [Presentation] KAGRA 用低温懸架装置の開発VII (2015)
  • Author(s): 山元一広 et al.,
  • Organizer: 日本物理学会2015 年秋季大会
  • Place of Presentation: 大阪市立大学(大阪府大阪市)
  • Year and Date: 2015-09-27
• [Presentation] Cryogenic interferometer technologies (2015)
  • Author(s): Kazuhiro Yamamoto
  • Organizer: Gravitational Wave Advanced Detector Workshop
  • Place of Presentation: Alyeska Resort, Girdwood, Alaska, U.S.A.
  • Year and Date: 2015-05-19
  • Int'l Joint Research