SLAC's polarized electron source laser system for the E-158 parity violation experiment

Axel Brachmann; Ray K. Alley; M. J. Browne; G. D. Cates; James Clendenin; J. deLamare; Josef C. Frisch; T. Galetto; E. W. Hughes; Thomas Brian Humensky; K. S. Kumar; Peter A. Mastromarino; J. Sodja; James L. Turner; Klaus H. Witte; Michael B. Woods

doi:10.1117/12.469769

4 June 2002 SLAC's polarized electron source laser system for the E-158 parity violation experiment

Axel Brachmann, Ray K. Alley, M. J. Browne, G. D. Cates, James Clendenin, J. deLamare, Josef C. Frisch, T. Galetto, E. W. Hughes, Thomas Brian Humensky, K. S. Kumar, Peter A. Mastromarino, J. Sodja, James L. Turner, Klaus H. Witte, Michael B. Woods

Author Affiliations +

Proceedings Volume 4632, Laser and Beam Control Technologies; (2002) https://doi.org/10.1117/12.469769
Event: High-Power Lasers and Applications, 2002, San Jose, California, United States

Abstract

SLAC E158 is an experiment to make the first measurement of parity violation in Moller scattering. The left-right cross-section asymmetry in the elastic scattering of a 45-GeV polarized electron beam off unpolarized electrons in a liquid hydrogen target will be measured to an accuracy of better than 10^-8, with the expected Standard Model asymmetry being approximately 10^-7. An intense circularly polarized laser beam for the polarized electron source is required with the ability to quickly switch between left and right polarization states with minimal left-right asymmetries in the parameters of the electron beam. This laser beam is produced by a unique SLAC-designed, flash-lamp pumped, Ti:Sapphire laser. We present this laser system design and initial results from recent commissioning runs.

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Axel Brachmann, Ray K. Alley, M. J. Browne, G. D. Cates, James Clendenin, J. deLamare, Josef C. Frisch, T. Galetto, E. W. Hughes, Thomas Brian Humensky, K. S. Kumar, Peter A. Mastromarino, J. Sodja, James L. Turner, Klaus H. Witte, and Michael B. Woods "SLAC's polarized electron source laser system for the E-158 parity violation experiment", Proc. SPIE 4632, Laser and Beam Control Technologies, (4 June 2002); https://doi.org/10.1117/12.469769

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