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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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
Issue number3-4
Publication statusPublished - 2007 Feb 10


  • Laser compton scattering
  • Polarized positron
  • Pulsed positron beam

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics


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