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2001 Fiscal Year Final Research Report Summary

Realization of polarized positron micro-beam for investigation of spin structure of material

Research Project

Project/Area Number 10354004
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 素粒子・核・宇宙線
Research InstitutionTokyo Metropolitan University (TMU)

Principal Investigator

HIROSE Tachishige  TMU, Graduate school of science, Professor, 理学研究科, 教授 (70087162)

Co-Investigator(Kenkyū-buntansha) KUMITA Tetsuro  TMU, Graduate school of science, Research associate, 理学研究科, 教授 (30271159)
CHIBA Masami  TMU, Graduate school of science, Research associate, 理学研究科, 助手 (60128577)
HAMATSU Ryosuke  TMU, Graduate school of science, Associate professor, 理学研究科, 助教授 (20087092)
WASHIO Masakazu  Advanced Research Inst. for Sci. & Engineering, Waseda Uni., Professor, 理工学総合センター, 教授 (70158608)
IRAKO Mitsuhiro  TMU, Graduate school of science, Research associate, 理学研究科, 助手 (60087004)
Project Period (FY) 1998 – 2000
KeywordsPolarized positronium / Bunching / Time-of-flight method / Thermal positronium / Multi gamma-rays
Research Abstract

We have sepetated the study in two steps, namely fundamental development of each technical items and practical usage of these items to achieve the goal of the project. Since various technical matters are related with generation of polarized slow positron-beams, we consider that the best way to complete the micra-beams of the polarized positrons is to make first precise studies of each component of the positron generation system :
1) Understanding of spin motion in electric and magnetic fields.
2) Generation of high intensity polaraized positron beams.
3) Completion of beam vunching system.
4) Development of the Wien filter.
5) Establishment of the mesuring method for the positron polarization.
6) Establishment of the mesuring method for p6sitron beam profile.
7) Construction of multi-gamma-ray spectrometer.
8) Study of production mechanisms of positorons.
If these items are well understood, we will be able to construct the micra-beams of the polarized positrons without difficulties. It may be concluded that we have attained good results for all these matters. In particular, we achieved fur better results than initially expected.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] T.Hirose 他8名: "Laser cooling system of ortho-positronium"Nucl.Inst.A Mets.. 455. 104-108 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Hirose 他8名: "Time bunching of slow positrons"Nucl.Inst.A Meth. (印刷中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Hirose 他6名: "Monte Carlo study of ortho-positronium"Jour.of Phys.Soci.of Jap. (印刷中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Hirose: "Polarized positron source for JLC"Nucl.Inst.A Mesh. 455. 15-24 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Iijima, T. Hirose et al.: "Laser cooling system of ortho-positronium"Nucl. Inst. & Meth. Phys. Res. A. 455. 104-108 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Iijima, T. Hirose et al.: "Time bunching of slow positrons"Nucl. Inst. & Meth. Phys. Res.. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Iijima, T. Hirose et al.: "Monte Carlo study of ortho-positronium laser cooling system"Jour. Pnys. Soc. Jap.. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Hirose: "Polanzed positron source for JLC"Nucl. Inst. & Meth. Phys. Res. A. 455. 15-24 (2000)

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

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Published: 2003-09-17  

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