Author/Authors :
Nakamura، نويسنده , , S. and Drachenfels، نويسنده , , W.v. and Durek، نويسنده , , D. and Frommberger، نويسنده , , F. and Hoffmann، نويسنده , , M. and Husmann، نويسنده , , D. and Kiel، نويسنده , , B. and Klein، نويسنده , , F. and Klein، نويسنده , , F.J. and Menze، نويسنده , , D. and Michel، نويسنده , , T. and Nakanishi، نويسنده , , T. and Naumann-Godo، نويسنده , , J. and Okumi، نويسنده , , S. and Reichelt، نويسنده , , T. and Sato، نويسنده , , H. and، نويسنده ,
Abstract :
At the 3.5 GeV electron accelerator ELSA of Bonn University, polarized electrons have been accelerated up to 2.0 GeV, crossing several depolarizing resonances without significant depolarization. The polarized electrons were produced by photoemission from an AlGaAs–GaAs superlattice crystal using circularly polarized laser light. A harmonic correction scheme was successfully applied to the third imperfection resonance (γa=3) and the polarization required for the planned experiments was conserved up to 2.0 GeV.
Keywords :
Particle accelerators , Polarized electron sources , Polarized electron beams , Depolarizing resonances , Spin dynamics
