Polarized positron generation based on laser compton scheme and its polarization measurements

Kazuyuki Sakaue, Taku Saito, Issei Yamazaki, Ryunosuke Kuroda, Masakazu Washio, Tachishige Hirose, Tsunehiko Omori, Toshiyuki Okugi, Yoshimasa Kurihara, Junji Urakawa, Masafumi Fukuda, Masahiro Nomura, Ayumu Ohashi

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1 Citation (Scopus)

Abstract

We have proposed a new scheme for polarized positron production, consisting of two quantum processes i.e. inverse Compton scatterings of circularly polarized laser light on high-quality electron beams and successive electron-positron pair creations. Using a circularly polarized laser beam of 532 nm scattered off a high-quality electron beam with the energy of 1.28 GeV, we have demonstrated for the first time productions of highly polarized positrons positrons with an intensity of 2 × 104 e+/bunch and an average energy of 36 MeV. Hence an average polarization of positrons was determined as 73±15(stat)±19(syst)% by means of a newly designed positron polarimeter.

Original languageEnglish
Pages (from-to)519-526
Number of pages8
JournalInternational Journal of Modern Physics B
Volume21
Issue number3-4
Publication statusPublished - 2007 Feb 10

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Keywords

  • Laser compton scattering
  • Polarized positron
  • Pulsed positron beam

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

Cite this

Sakaue, K., Saito, T., Yamazaki, I., Kuroda, R., Washio, M., Hirose, T., Omori, T., Okugi, T., Kurihara, Y., Urakawa, J., Fukuda, M., Nomura, M., & Ohashi, A. (2007). Polarized positron generation based on laser compton scheme and its polarization measurements. International Journal of Modern Physics B, 21(3-4), 519-526.