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Persistent URL http://purl.org/net/epubs/work/49506
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Record Id 49506
Title The E166 experiment: Development of an undulator-based polarized positron source for the international linear collider
Abstract A longitudinal polarized positron beam is foreseen for the international linear collider (ILC). A proof-of-principle experiment has been performed in the final focus test beam at SLAC to demonstrate the production of polarized positrons for implementation at the ILC. The E166 experiment uses a 1 m long helical undulator in a 46.6 GeV electron beam to produce a few MeV photons with a high degree of circular polarization. These photons are then converted in a thin target to generate longitudinally polarized e + and e −. The positron polarization is measured using a Compton transmission polarimeter. The data analysis has shown asymmetries in the expected vicinity of 3.4% and ∼1% for photons and positrons respectively and the expected positron longitudinal polarization is covering a range from 50% to 90%.
Organisation ASTeC , ASTeC-MaRS , CI , STFC
Keywords Physics
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Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article Pramana 69, no. 6 (2008): 1165-1169. doi:10.1007/s12043-007-0248-5 2008