50 mJ / pulse, waist = 10 m, 178.5MHz laser beam e- beam 0.11 mJ / pulse, waist = 30 m, 357MHz…

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IWLC20103 Alternative solution Compton polarised positron source for the ILC Araki et al. arXiv:physics/ E  Compton (GeV) S  Compton I. Applications/Source e + Experimental proof at ATF Omori et al. PRL 96(2006) The e+ are longitudinally polarised Omori-san’s picture