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2000 Fiscal Year Final Research Report Summary

Accelerator and nuclear physics with colliders of electron-cooled GeV nuclei and electrons

Research Project

Project/Area Number 11691127
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section海外学術
Research Field 素粒子・核・宇宙線
Research InstitutionOsaka University

Principal Investigator

HATANAKA Kichiji  Osaka University, RCNP Professor, 核物理研究センター, 教授 (50144530)

Co-Investigator(Kenkyū-buntansha) WAKASA Tomotsugu  Osaka University, Associates, 核物理研究センター, 助手 (10311771)
SAITO Takane  Osaka University, Associates, 核物理研究センター, 助教授 (60028222)
SATO Kenji  Osaka University, Assistant Prof., 核物理研究センター, 教授 (60013421)
NORO Tetsuo  Kyushu University, Department of physics professor, 理学研究科, 教授 (30164750)
NINOMIYA Shiro  Osaka University, Associates, 核物理研究センター, 助手 (80304062)
Project Period (FY) 1999 – 2000
KeywordsCollider / High luminosity / Electron cooling / QCD / Medium effects / Eddy current
Research Abstract

Physics at energies covered by colliders of electron-cooled GeV nuclei and electrons is very important for studies from non-perturbed to perturbed QCD(Quantum ChromoDynamics). In this research project, we investigated followings.
1.From the experimental point of view, luminosities should be as large as 10^<33>cm^<-2>s^<-1>. In order to realize this luminosity, it was found that the electron cooling of ions at the maximum energy is inevitable.
2.A conceptual design of the accelerator lattice was performed based on the ion optical studies. It was found that there are optimum combinations between energies of nuclei and electrons.
3.It was found from our researches at RCNP that the temperature control of cooling water by 0.1°is a key issue to stabilize accelerators.
4.High performance magnets were designed and eddy current effects were investigated from the ion optical point of view.
5.The medium modification of hadron properties in nuclei is one of most important and inter-esting subjects in the nuclear physics, which is predicted by QCD and QHD.We investgated the effect observed by the quasi-free (p, 2p) scattering leading to s_<1/2> states.
6.Collaboration program was started between PNPI(Russia) and RCNP for experimental nu-clear physics researches at GeV energy region.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] K.Hatanaka et al.: "Design study of a 10 GeV electron accumulator ring for the PEARL project at RCNP."Nucl.Phys.. A663&664. 1087-1090 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Noro et al.: "In-medium NN interaction and nucleon and meson masses studied with nucleon knockout reactions."Nucl.Phys.. A663&664. 517-520 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Sato et al.: "Controllable Chaotic Monitor of Third-integer resonant Extraction. with RF Electric Fields."Proc.of EPAC2000. 1555-1557 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Sato et al.: "An Improved Method for the Dipole and Quadrupole Magnet Design."Proc.of EPAC2000. 2119-2121 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Noro.: "Nuclear Medium Effects Studied by Nucleon Quasifree Scattering."Proc.of SPIN2000. (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Ninomiya et al.: "Cyclotron Operation at the Research Center for Nuclear Physics."Proc.of WAO2001.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Hatanaka et al.: "Design study of a 10 GeV electron accumulator ring for the PEARL project at RCNP."Nucl.Phys.. A663&664. 1087-1090 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Noro et al.: "Nuclear Medium Effects Studied by Nucleon Quasifree Scattering."Nucl.Phys.. A663&664. 517-520 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Sato et al.: "Controllable Chaotic Monitor of Third-integer Resonant Extraction with RF Electric Fields."Proc.of EPAC2000. 1555-1557 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Sato et al.: "An Improved Method for the Dipole and Quadrupole Magnet Design."Proc.of EPAC2000. 2119-2121 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Noro.: "In-medium NN interaction and nucleon and meson masses studied with nucleon knockout reactions"Proc.of SPIN2000. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Ninomiya et al.: "Cyclotron Operation at the Research Center for Nuclear Physics."Proc.of WAO2001. (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2002-03-26  

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