The Slac Polarized Electron Source*
نویسندگان
چکیده
The SLAC polarized electron source employs a photocathode DC high voltage gun with a loadlock and a YAG pumped Ti:sapphire laser system for colliding beam experiments or a flash lamp pumped Ti:sapphire laser for fixed target experiments. It uses a thin, strained GaAs(100) photocathode, and is capable of producing a pulsed beam with a polarization of ≥80% and a peak current exceeding 10 A. Its operating efficiency has reached 99%. The physics and technology of producing high polarization electron beams from a GaAs photocathode will be reviewed. The prospects of realizing a polarized electron source for future linear colliders will also be discussed. Invited talk presented at the International Workshop on Polarized Beams and Polarized Gas Targets Cologne, Germany, June 6–9, 1995 * Work supported by Departement of Energy contract DE-AC03-76SF00515.
منابع مشابه
The Slac Polarized Electron Source and Beam for E-158 T. B. Humensky, for the E-158 Collaboration and the Slac Polarized Electron Source Group
SLAC E-158 is making the first measurement of parity violation in Møller scattering. E-158 measures the right-left cross-section asymmetry, ALR, in the scattering of a 45-GeV polarized electron beam off unpolarized electrons in a liquid hydrogen target. E-158 plans to measure the expected Standard Model asymmetry of ∼ 10 to an accuracy of better than 10. This paper discusses the performance of ...
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