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Energy resolution in ionization chamber filled with liquefied rare gases at an elevated temperature.

Research Project

Project/Area Number 06640536
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 物理学一般
Research InstitutionSaitama College of Health

Principal Investigator

SHIBAMURA Eido  Saitama College of Health, general education, associate professor, 一般教養, 助教授 (30100605)

Co-Investigator(Kenkyū-buntansha) MASUDA Kimiaki  Saitama College of Health, general education, associate professor, 一般教養, 助教授 (40173744)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsEnergy Resolution / Ionization / liquid Argon / Liquid Xenon / Euergy Resolution / Liquid Argon / Liquid Xeuon / ionization chawber / ionization
Research Abstract

Ionization chambers filled with liquefied rare gases exhibit good energy resolution and good linearity of output signals to the deposited energy. For example, liquid argon calorimeters have been used in high physics experiments. Theoretically, however, far better energy resolution is expected than those experimentally obtained. The purpose of the present work is to obtain the excellent energy resolution as expected by the theory, or to investigate the disagreement of the theory and the experiment on the energy resolution.
We investigated the energy resolution in ionization chambers filled with liquefied rare gases doped with photo-ionizing molecules. We found that the energy resolution is improved by doping liquid rare gases with photo-ionizing molecules only at relatively low electric fields and that the improvement is little at high fields, in contrast to the estimation based on the 'Recombination model' proposed by Thomas et al. We concluded that the 'Recombination model' is not the case [1]. Investigating the ionization yield and scintillation yield in liquefied rare gases, we made a comment [2] on a paper by Seguinot et al. As a typical case of high ionization density, we studied the ionization yield and the energy resolution for relativestic heavy ions in liquid argon calorimeter doped with photo-ionizing molecules [3].
The excellent energy resolution as expected by the theoretical estimation is not obtained so far. We, however, have improved the experimental apparatus such as purifier of rare gases. We would like to make more experiments by using improved electronics system.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] E. SHIBAMURA, K. MASUDA et. al.: "Test of the Recombination Model for Energy Resolution in an Ionization Chamber filled with Liquid Argon or Xenon" Japanese Journal of Applied Physics. 34. 1897-1900 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M. Miyajima, S. Sasaki and E. Shibamura: "Comments on “liquid xenon ionization and scintillation studies for a totally active-vector electromagnetic calorimeter"" Nuclear Instruments and Methods Section A. 352. 548-551 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M. Ichige, K. Masuda, E. Shibamura et al.: "Analysis of data obtained with Au ions of 700MeV/n energy in an allene doped liquid Ar homogeneous calorimeter" Nudear Instruments and Methods Section A. 362. 506-516 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] E.Shibamura, K.Masuda et al.: "Test of the Recombination Model for the Energy Resolution in an Ionization Chamber Filled with Liquid Argon or Xenon" Japanese Journal of Applied Physics. Vol.34. 1897-1900 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Miyajma, S.Sasaki and E.Shibamura: "Comments on "liquid xenon ionization and scintillation studies for a totally active-vector electromagnetic calorimeter"" Nuclear Instruments and Methods Section A. Vol.352. 548-551 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.Ichige, K.Masuda, E.Shibamura et al.: "Analysis of data obtained with Au ions of 700 MeV/n energy in an allene-doped liquid Ar homogeneous calorimeter" Nuclear Instruments and Methods Section A. Vol.362. 506-516 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Eido SHIBAMURA et al.: "Test of the Recombination Model for the Energy Resolution in an Ionization Chamber filled with Liquid Argon and Xenon" Jpn. J. Appl. Phys.34. 1897-1900 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Mitsuhiro MIYAJIMA et al.: "Camments on “liquid xencn ionization and sciuti llation studies for a totally active-vector electromagnetic calorimeter"" Nucl. Instr. and Meth.A. 352. 548-551 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.ICHIGE et al.: "Analysis of date obtained with ions of 700 MeV/n energy in an allene-doped liquid Ar homogeneous calorimeter" Nucl. Instr. and Meth. A. 362. 506-516 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] E.Shibamura、K.Masuda et al.: "Test of the Recombination wodel for the Ehergy Resolution in Ionization Chamber Filled with Liquid Argon or Xeuon" Japanese Jourual of Applied Physics. 34(未定). (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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