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29 March 2024
 
  » arxiv » hep-ex/0508026

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Efficient propagation of the polarization from laser photons to positrons through Compton scattering and electron-positron pair creation
T. Omori ; M. Fukuda ; T. Hirose ; Y. Kurihara ; R. Kuroda ; M. Nomura ; A. Ohashi ; T. Okugi ; K. Sakaue ; T. Saito ; J. Urakawa ; M. Washio ; I. Yamazaki ;
Date 11 Aug 2005
Subject hep-ex
AbstractWe demonstrated for the first time the production of highly polarized short-pulse positrons with a finite energy spread in accordance with a new scheme that consists of two-quantum processes, such as inverse Compton scatterings and 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 obtained polarized positrons with an intensity of 10^4 e+/bunch. Magnitude of positron polarizations was determined as 72+-21% by means of a newly designed positron polarimeter.
Source arXiv, hep-ex/0508026
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