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Search for high energy cosmic neutrinos by the Ice Cube Neutrino Observatory

Research Project

Project/Area Number 15403004
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionChiba University

Principal Investigator

KAWAI Hideyuki  Chiba University, Department of Physics, Assoc. Prof., 理学部, 助教授 (60214590)

Co-Investigator(Kenkyū-buntansha) YOSHIDA Shigeru  Chiba University, Department of Physics, Assoc. Prof., 理学部, 助教授 (00272518)
MASE Keiichi  Chiba University, Department of Physics, Assist. Prof., 理学部, 助手 (80400810)
Project Period (FY) 2003 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 2006: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2005: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2004: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2003: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywordsneutrinos / cosmic rays / astrophysics / south pole / elementary particle / 物理学
Research Abstract

We have made significant commitments on construction of the IceCube neutrino observatory at the South pole station. We built calibration apparatus to measure the uniformity, the charge response and the absolute quantum efficiencies of the optical sensors in the laboratory. Approximately an order of 1000 photomultipliers to detection Cherenkov light in a deep-ice has been calibrated and characterized. All the calibration results including the parameter values to characterize their signal response has been available via website and available to the simulation process. The relevant detector simulation has also been developed and now in use for the data analysis.
In order to reduce the systematic uncertainties in determination of particle energy, we built absolutely calibrated standard reference detectors being fully characterized in the laboratory. During 2005-2006 seasons, 16 of such reference detectors were assembled by the financial support of the grant. A have of them was deployed in the polar summer of 2006, a rest of them will be in deployment next year. The data from these detectors provides important tools to understand the energy scale of the detected events.
We have fully investigated propagation of the extremely- high energy neutrinos and the secondary particles in the earth so that the expected intensity and the energy distribution of the leptons at the depth of the IceCube deep-ice array can be accurately calculated. The Mote Carlo simulation was carried out to predict the event rate for the various models of cosmic neutrinos.
In summary we are now fully prepared to analyze the up-coming data from the IceCube neutrino observatory. All the R&D's concerning the detectors and the softwares have been completed with the support of the grant. The first physics analysis is scheduled to be published during year of 2007.

Report

(5 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (14 results)

All 2006 2005 2004 Other

All Journal Article (13 results) Publications (1 results)

  • [Journal Article] First year performance of the IceCube neutrino telescope,Astroparticle Physics2006

    • Author(s)
      A.Achterberg et al.
    • Journal Title

      Astroparticle Physics 26

      Pages: 155-173

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Limits on the muon flux from neutralino annihilations at the center of the Earth with AMANDA2006

    • Author(s)
      A.Achterberg et al.
    • Journal Title

      Astroparticle Physics 26

      Pages: 282-300

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] First year performance of the IceCube neutrino telescope2006

    • Author(s)
      A.Achterberg et al.
    • Journal Title

      Astroparticle Physics 26

      Pages: 155-173

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Limits on the muon flux from neutralino annihilations at the center of the Earth with AMANDA2006

    • Author(s)
      A.Achterberg et al.
    • Journal Title

      Astroparticle Physics(A.Achterberg et al.) 26

      Pages: 129-139

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] First year performance of the IceCube neutrino telescope2006

    • Author(s)
      IceCube collaboration
    • Journal Title

      Astroparticle Physics 26

      Pages: 155-173

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Neutrino Astronomy and Cosmic Rays at the South Pole2005

    • Author(s)
      IceCube collaboration
    • Journal Title

      Int.J.Mod.Phys. A20

      Pages: 6919-6923

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The IceCube Neutrino Telescope2005

    • Author(s)
      Yoshida
    • Journal Title

      Nucl.Phys.Proc.Suppl. 138

      Pages: 179-182

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Sensitivity of the IceCube detector to astrophysical sources of high energy muon neutrinos2004

    • Author(s)
      J Ahrens et al.
    • Journal Title

      Astroparticle Physics 20

      Pages: 507-532

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Propagation of extremely high energy leptons in Earth : Implications for their detection by the IceCube neutrino telescope2004

    • Author(s)
      S.Yohsida et al.
    • Journal Title

      Physical Review D 69

      Pages: 103004-103004

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Sensitivity of the IceCube detector to astrophysical sources of high energy muon neutrinos2004

    • Author(s)
      J.Ahrens et al.
    • Journal Title

      Astroparticle Physics(IceCube collaboration) 20

      Pages: 507-532

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Propagation of extremely high energy leptons in Earth : Implications for their detection by the IceCube neutrino telescope2004

    • Author(s)
      S.Yoshida, R.Ishibashi, H.Miyamoto
    • Journal Title

      Phys.Rev.D 69

      Pages: 103004-103004

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Propagation of Extremely High Energy Leptons in Earth2004

    • Author(s)
      Yoshida, Ishibashi, Miyamoto
    • Journal Title

      Physical Review D 69

      Pages: 103004-103004

    • Related Report
      2004 Annual Research Report
  • [Journal Article] The IceCube Neutrino Telescope2004

    • Author(s)
      Yoshida
    • Journal Title

      Mod.Lett.Phys. A19

      Pages: 1099-1106

    • Related Report
      2004 Annual Research Report
  • [Publications] Yoshida, Ishibashi, Miyamoto: "Propagation of Extremely High Energy Leptons in Earth"Physical Review D. 69(未定). (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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