Updated on 2021/03/26

写真a

 
NAKAMURA, Mituhiro
 
Organization
Institute of Materials and Systems for Sustainability Advanced Measurement Technology Center Elementary Particle Measurements Section Professor
Title
Professor

Degree 1

  1. Doctor of Science ( 1989.3   Nagoya University ) 

Research Interests 5

  1. μ粒子

  2. 宇宙線

  3. ダークマター

  4. 原子核乾板

  5. ニュートリノ

Research Areas 1

  1. Others / Others  / Elementary Particle/Atomic Nucleus/Cosmic Ray/Space Physics

Current Research Project and SDGs 4

  1. 宇宙線を用いた大型構造物の内部構造透視

  2. Study of Neutrino Oscillations

  3. Study of Neutrinos

  4. R&D of Darkmatter Telescope

Education 3

  1. Nagoya University   Graduate School, Division of Natural Science

    1982.4 - 1985.3

      More details

    Country: Japan

  2. Nagoya University   Graduate School, Division of Natural Science

    1980.4 - 1982.3

      More details

    Country: Japan

  3. Shinshu University   Faculty of Science   Physics

    1976.4 - 1980.3

      More details

    Country: Japan

Professional Memberships 2

  1. 日本写真学会

  2. 日本物理学会

Awards 3

  1. 日本写真学会 学術賞

    2005.5  

     More details

    Country:Japan

  2. 日本物理学会 論文賞

    2002.3  

     More details

    Country:Japan

  3. IEEE Nuclear Science Symposium and Medical Imaging Conference Superior Oral Presentation Award

    1991.11  

 

Papers 3

  1. Nuclear emulsion with excellent long-term stability developed for cosmic -ray imaging

    Nishio Akira, Morishima Kunihiro, Kuwabara Ken-ichi, Yoshida Tetsuo, Funakubo Takeshi, Kitagawa Nobuko, Kuno Mitsuaki, Manabe Yuta, Nakamura Mitsuhiro

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT   Vol. 966   2020.6

     More details

  2. Development of Collimated Fast Neutron Detection without Physical Collimator

    Tomita Hideki, Watanabe Kanji, Kanamori Kotaro, Yoshimoto Masahiro, Komatani Ryosuke, Morishima Kunihiro, Naka Tatsuhiro, Nakano Toshiyuki, Nakamura Mitsuhiro, Iguchi Tetsuo

    2018 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE PROCEEDINGS (NSS/MIC)     2018

     More details

  3. Development of nuclear emulsion for muography

    Morishima Kunihiro, Nishio Akira, Moto Masaki, Nakano Toshiyuki, Nakamura Mitsuhiro

    ANNALS OF GEOPHYSICS   Vol. 60 ( 1 )   2017

     More details

KAKENHI (Grants-in-Aid for Scientific Research) 11

  1. Nuclear Emulsion - New deployments for fundamental and interdisciplinary researches in the 21st century-

    Grant number:18H05210  2018.04 - 2023.03

      More details

    Authorship:Principal investigator 

    Grant amount:\592020000 ( Direct Cost: \455400000 、 Indirect Cost:\136620000 )

  2. Unification and Development of the Neutrino Science Frontier

    Grant number:18H05193  2018.04 - 2019.03

    Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

      More details

    Authorship:Coinvestigator(s) 

  3. 原子核乾板による暗黒物質の検出 -グランサッソー地下における本格展開-

    Grant number:17H01661  2017.04 - 2020.03

    中村 光廣

      More details

    Authorship:Principal investigator 

    Grant amount:\36140000 ( Direct Cost: \27800000 、 Indirect Cost:\8340000 )

    超高解像度の原子核乾板により、宇宙の暗黒物質の衝突によって生じる~100nm長の反跳原子飛跡をとらえ、反跳方向の偏りを検出する事により、暗黒物質の直接検出を行う実験を推進している。
    本研究では、原子核乳剤製造装置を、LNGS地下に設置し、乳剤の製造・塗布・照射・現像を地下で一貫して行う体制を構築、低BGで背景事象の理解を進める。また並行して解析システム系の実装・運用を行い100 g級実験を遂行、世界初となる方向感度を持った探索による暗黒物質への制限を与えると共に、DAMA実験が信号を捕らえたとクレームしている領域をカバーする本格物理実験への課題を洗い出す。
    今年度は、LNGS地下で建設中のNEWSdm実験地下ファシリティの整備、低BG環境の構築を継続しておこなった。またグランサッソー地下へ持ち込む乳剤製造装置の制作・組み立てを名古屋でおこなった。
    中性子BGの計測関連では、HTS搭載による反跳飛跡検出アルゴリズムの高速化を図った。暗黒物質プロトタイプ実験に関しては、グランサッソー地下で10g規模の照射を行い現状のバックグラウンドレベルを測定した。また並行して信号/バックグラウンド選別に関して、過度の定着により、信号の飛跡は消滅するが、バックグラウンドは消えないことを確認し、この特徴を用いて逆に信号/バックグラウンドを選別するという手法を新たに発明し、方向性探索において世界最高感度を達成できる見込を得て、現在その評価を行っているところである。
    翌年度、交付申請を辞退するため、記入しない。
    翌年度、交付申請を辞退するため、記入しない。

  4. Digital Archives for Nuclear Emulsion Data - Archives of past experiments in Cosmic-ray and Accelerator physics -

    Grant number:16K05378  2016.04 - 2020.03

    Kodama Koichi

      More details

    Authorship:Coinvestigator(s) 

    Digital archives for nuclear emulsion data of past experiments, such as in cosmic-ray and accelerator physics, had been studied. Nuclear emulsion is a tracking device with excellent spatial resolution of sub-micron accuracy and have been playing an important role in physics. We are succeeding to develop fast read-out systems for tracks in emulsion and our latest system (HTS) is achieving a speed of 2000m2/year. It is almost equivalent to those of emulsion plates used in the past experiments, in those emulsion plates, analyzed fraction of surface was quite limited, probably less than 1%, due to lack of analysis power and the rest was left un-analyzed. HTS could provide us enough read-out power to analyze all tracks recorded in them. As a first trial, we chose RUNJOB ( RUssia Nippon JOint Balloon program ) experiment. All emulsion plates of 1997 flight had been read-out and minimum bias analysis was tried. Those archived data was also used for educational purposes for students.

  5. Prompt gamma-ray imaging with a nuclear emulsion for in vivo dose verification in proton therapy

    Grant number:16K15349  2016.04 - 2018.03

    TOSHITO Toshiyuki

      More details

    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    A first prototype emulsion gamma camera was tested at Nagoya Proton Therapy Center (NPTC) in Japan. The gamma camera which measures 62.5 × 50 × 3.2 mm3 was put on the sidewall of a water phantom. The camera was assembled by stacking 10 emulsion films. The phantom was irradiated with 200 MeV protons using a spot scanning nozzle at NPTC. After development of emulsion films, films were scanned by using a high-speed emulsion read-out system at Nagoya University. After a pilot analysis to localize gamma-ray events which have e+/e- pair topology in the emulsion films, a candidate event of a several-MeV gamma-ray which converts to e+/e- pair was detected.
    We examined a first prototype nuclear emulsion gamma-ray camera system for proof-of-principle. The detector system operated within expectations. Our developed emulsion gamma camera confirmed its potential as a detector for emulsion SPECT system for in vivo dose verification in proton beam radiotherapy.

  6. Development of Neutrino Sceinence Frontier based on the International Neutreino Research Network

    Grant number:15K21734  2015.11 - 2018.03

    Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    NAKAYA Tsuyoshi

      More details

    Authorship:Coinvestigator(s) 

    We develop Neutrino Science Frontier by unifying Japanese neutrino research projects. Japanese neutrino research is well advanced in the world in the scale of elementary particle to cosmology. Three generation paradigm of neutrino oscillations is established, and explore the possibility to measure the symmetry between a particle and the anti-particle in neutrinos (CP symmetry). The T2K experiment reports a hint of large CP violation. The IceCube experiment establishes the observation technology of cosmic neutrinos, and discovers the high energy cosmic neutrinos beyond TeV energy. In the international framework, we establish the International Neutreino Research Network to advance neutrino science.

  7. Study of Neutrino by OPERA experiment -Summary and study on cosmic-ray event-

    Grant number:15H02085  2015.04 - 2018.03

    NAKAMURA Mitsuhiro

      More details

    Authorship:Principal investigator 

    Grant amount:\31720000 ( Direct Cost: \24400000 、 Indirect Cost:\7320000 )

    OPERA is an experiment to confirm the existence of neutrino oscillation, i.e. existence of neutrino mass, by detecting tau neutrino appearance. From 2000, we started the detector and beam line construction, did beam exposure from 2006 to 2012, have been performing event analysis until today. In 2015, we detected the fifth event and reached to the statistical significance of 5.1σlevel meaning the discovery level. From 2016, by applying looser cut and including the boarder events, the signal number reaches to 10 events with the expected background of 2.0±0.4. The reached significance level is 6.1σ. OPERA has finished the main analysis by this paper although continuing technological R&D using real events for electron neutrino detection and so on for future neutrino experiments.

  8. Unification and Development of the Neutrino Science Frontier

    Grant number:25105001  2013.06 - 2018.03

    Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Nakaya Tsuyoshi

      More details

    Authorship:Coinvestigator(s) 

    We develop Neutrino Science Frontier by unifying Japanese neutrino research projects. Japanese neutrino research is well advanced in the world in the scale of elementary particle to cosmology. Three generation paradigm of neutrino oscillations is established, and explore the possibility to measure the symmetry between a particle and the anti-particle in neutrinos (CP symmetry). The T2K experiment reports a hint of large CP violation. The IceCube experiment establishes the observation technology of cosmic neutrinos, and discovers the high energy cosmic neutrinos beyond TeV energy. The leading group efficiently makes the plan and strategy under the good management, and supports the activity of each research group toward the discovery and the achievement.

  9. R&D of super high resolution neutrino detector

    Grant number:25105006  2013.06 - 2018.03

    Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    NAKAMURA Mitsuhiro

      More details

    Authorship:Principal investigator 

    Grant amount:\76440000 ( Direct Cost: \58800000 、 Indirect Cost:\17640000 )

    In this research, we increased the nuclear emulsion gel production capability up to 700kg/year and the emulsion film production capability up to 300m2/year. Using this capability, we supplied nuclear emulsion films to the following projects and accelerated each projects and fields, 1) NINJA experiment at JPARC for the study of low energy neutrino interactions, 2) GRAINE project for the balloon borne large aperture and high precision gamma-ray telescope, 3) Cosmic-ray muon radiography to investigate the inner structure of large scale subjects like Pyramids. In parallel, we realized the extension of the crystal size selection from 20nm to 1.2 microns. By this extension, we can select the crystal size suited to the purpose. Using super fine crystal gel of 10 nano-meter size, we developed the experiment for dark matter directional detection, heavy ion experiments and high precision neutron detection.

  10. タウニュートリノの直接検出によるニュートリノフレーバーの研究

    2006

    科学研究費補助金 

      More details

    Authorship:Principal investigator 

  11. 超高感度原子核乾板乳剤の開発

    2001 - 2003

    科学研究費補助金 

      More details

    Authorship:Principal investigator 

▼display all

 

Teaching Experience (On-campus) 1

  1. Fundamentals of Physics II

    2011

 

Social Contribution 2

  1. 放送大学 面接授業

    Lecturer

    放送大学  面接授業 実験で学ぶ物理学  2015.11 - Now

     More details

    Audience: College students

    Type:Other

  2. 先進科学塾@名大

    2013.4 - Now

     More details

    実験を主体としてサイエンスを学ぶ実験科学講座:先進科学塾@名大の事務局をしています。http://asw.flab.phys.nagoya-u.ac.jp/