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1991 Fiscal Year Final Research Report Summary

Development of a crystal installing SQUID's for the detection of charged particles

Research Project

Project/Area Number 02804011
Research Category

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

Allocation TypeSingle-year Grants
Research Field 核・宇宙線・素粒子
Research InstitutionOsaka University

Principal Investigator

FUJITA Yoshitaka  Osaka University, College of General Education Research Associate, 教養部・物理教室, 助手 (60093457)

Co-Investigator(Kenkyū-buntansha) SASAKI Shosuke  Osaka University, College of General Education Lecturer, 教養部・物理教室, 講師 (60029717)
TAKAHASHI Noriaki  Osaka University, College of General Education Professor, 教養部・物理教室, 教授 (10028152)
SHIMODA Tadashi  Osaka University, College of General Education Associate Professor, 教養部・物理教室, 助教授 (70135656)
MIYATAKE Hiroari  Osaka University, College of General Education Research Associate, 教養部・物理教室, 助手 (50190799)
NISHIJIMA Shigehiro  Osaka University, Institute for Industrial Science Research Associate, 産業科学研究所, 助手 (00156069)
Project Period (FY) 1990 – 1991
Keywordscryostat / SQUID / Detection of a Charged Particle Without Touching
Research Abstract

A weak magnetic field follows a moving charged particle and the strength of the field increases with the velocity of the particle. Accoridng to our calculation using the theory of special relativity, it is predicted that the strength of the magnetic field induced by a charged prticle moving with a relativistic speed have an order of magnitude detectable by a SQUID. This fact opens a possibility of detecting a charged particle without directly "touching". As a first step we develop a crystal for the installation of the SQUID which should be operated at the helium temperature. The crystal is characterized with a hole through which charged particles can come and go.
Thinking of the future development, we decided to use FRP material instead of metal such as stainless steel. The type of the FRP was examined in order to survive the low temperature and to achieve good magnetic character. For the liquid and the vacuum seal, a screw system has been tested and developed, which makes the assembling and the deassembling easy. In a preliminary test we succeeded in sealing the liquid nitrogen and also the liquid helium. The prototype crystal could keep the liquid nitrogen for a while, but it was not possible to reach the stage of keeping the liquid helium. The cause of the leakage was detected and we hope we can keep them after the improvement progressing now.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] Y.Fujita et al.: "Planned Time-of-Flight Mass Measurements for Exotic Nuclei Using the ESR at GSI" Proc.Int.Symp.on "Structure and Reactions of Unstable Nuclei",Niigata,Japan,June 17-19(1991)World Scientific Publishing. (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J.Trotscher,Y.Fujita et al.: "Isochronous,Multi-turn Mass Measurement of Exotic Nuclei Using the ESR" Proc.Second Int.Conf.on Radioactive Nuclear Beams,Louvain-la-Neuve,Belgium,August 19-21(1991),IOP Publishing. 401-406 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Ohtani,S.Nishijima,T.Okada et al.: "Consideration of Thermal Insulating Support System" Adv.Cryog.Eng.38. (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Ueno,S.Nishijima,T.Okada et al.: ""Glass-Film-Glass"Hybrid Organic Composites for Forced Flow Fusion Magent" Adv.Cryog.Eng.38. (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y. Fujita et al.: "Planned Time-of-Flight Mass Measurements for Exotic Nuclei Using the ESR at GSI" Proc. Int. Symp. on "Structure and Reactions of Unstable Nuclei". 1991 World Scientific Publishing. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J. Trotscher, Y. Fujita et al.: "Isochronous, Multi-turn Mass Measurement of Exotic Nuclei Using the ESR" Proc. Second Int. Conf. on Radioactive Nuclear Beams, Louvain-la-Neuve, Belgium. 1991 IOP Publishing. 401-406 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Ohtani, S. Nishijima, T. Okada et al.: "Consideration of Thermal Insulating Support System" Adv. Cryog. Eng.38. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Ueno, S. Nishijima, T. Okada et al.: ""Glass-Film-Glass" Hybrid Organic Composites for Forced Flow Fusion Magnet" Adv. Cryog. Eng.38. (1992)

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

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Published: 1993-03-16  

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