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Scott Price; Matt Poelker; Charles Sinclair; Paul Rutt; David Mack; Joseph Grames
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States). Funding organisation: USDOE Office of Energy Research ER (United States)1998
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States). Funding organisation: USDOE Office of Energy Research ER (United States)1998
AbstractAbstract
[en] We report on recent experience with a 5 MeV Mott scattering polarimeter to monitor electron beam polarization in the CEBAF injector. At 5 MeV, the effective analyzing power of a 100 nm gold foil is close to the calculated single-scatter analyzing power -0.522 (at null=172.6-). Statistical uncertainties of order 1% are achieved quickly since elastic signal rates at 2 muA CW are high. Recent chamber modifications and signal electronics changes have improved signal-to-noise. Calibration work continues. A variety of measurements are feasible which affect machine operations, polarized source development and serve the facility user community
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1 Sep 1998; 3 p; 13. International Symposium On High-Energy Spin Physics (SPIN 98); Protvino (Russian Federation); 8-12 Sep 1998; DOE/ER/40150--2207; AC05-84ER40150; Available from Thomas Jefferson National Accelerator Facility, Newport News, VA (US); In Protvino 1998, High energy spin physics 554-556
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