The focal plane proton-polarimeter for the 3-spectrometer setup at MAMI

T. Pospischil , P. Bartsch , D. Baumann , R. Boehm , K. Bohinc , N. Clawiter , M. Ding , S. Derber

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M. Distler D. Elsner I. Ewald J. Friedrich J.M. Friedrich R. Geiges S. Groezinger M. Hamdorf S. Hedicke P. Jennewein J. Jourdan M. Kahrau F. Klein P. Koenig A. Kozlov H. Kramer K.W. Krygier J. Lac A. Liesenfeld S. Malov J. McIntyre H. Merkel P. Merle U. Mueller R. Neuhausen E.A. Offermann M. Potokar R. Ransome A. Richter G. Rosner J. Sanner H. Schmieden M. Seimetz I. Sick O. Straehle A. Suele A. Wagner T. Walcher G.A. Warren M. Weis X.Q. Wu

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keywords spectrometerbeenfocalmamiplaneproton-polarimetersetupadded

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For experiments of the type A(\vec e,e'\vec p) the 3-spectrometer setup of the A1 collaboration at MAMI has been supplemented by a focal plane proton-polarimeter. To this end, a carbon analyzer of variable thickness and two double-planes of horizontal drift chambers have been added to the standard detector system of Spectrometer A. Due to the spin precession in the spectrometer magnets, all three polarization components at the target can be measured simultaneously. The performance of the polarimeter has been studied using elastic p(e,e'p) scattering.

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The focal plane proton-polarimeter for the 3-spectrometer setup at MAMI

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