Production of a short-bunch polarized positron beam and design of a positron polarimeter

M. Fukuda, A. Ohashi, T. Hirose, Masakazu Washio, I. Yamazaki, Y. Kurihara, M. Nomura, T. Okugi, T. Omori, J. Urakawa

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We have been pursuing a basic study of a polarized positron source for a next generation linear collider, JLC based on two fundamental processes, i.e. inverse Compton scattering of circularly polarized laser-photons and pair-creation of a polarized y-ray. Polarized y-rays were produced at collisions of circularly polarized laser-beams with a wave length of 532nm provided from a Nd: YAG with counterpropagating electron beams of 1.28 GeV. Since a time-duration of produced γ -rays is extremely short, i.e. 30 ps, we have developed a transmission method in which a total flux of γ-rays passing through magnetized iron is measured resulting in asymmetry determination. We will report technical details of a positron polarimetry, which will be soon employed to substantiate our proposed view concerning a JLC polarized positron source.

    Original languageEnglish
    Title of host publicationJoint 28th ICFA Advanced Beam Dynamics and Advanced and Novel Accelerators Workshop on Quantum Aspects of Beam Physics
    PublisherWorld Scientific Publishing Co. Pte Ltd
    Pages95-102
    Number of pages8
    ISBN (Electronic)9812560696, 9789812560698
    DOIs
    Publication statusPublished - 2004 Jan 1
    EventJoint 28th International Committee for Future Accelerators Advanced Beam Dynamics and Advanced and Novel Accelerators Workshop on Quantum Aspects of Beam Physics - Hiroshima, Japan
    Duration: 2003 Jan 72003 Jan 11

    Other

    OtherJoint 28th International Committee for Future Accelerators Advanced Beam Dynamics and Advanced and Novel Accelerators Workshop on Quantum Aspects of Beam Physics
    CountryJapan
    CityHiroshima
    Period03/1/703/1/11

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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