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

Th Pospischil, P. Bartsch, D. Baumann, R. Böhm, K. Bohinc, N. Clawiter, M. Ding, S. Derber, M. Distler, D. Elsner, I. Ewald, J. Friedrich, J. M. Friedrich, R. Geiges, S. Grözinger, M. Hamdorf, S. Hedicke, P. Jennewein, J. Jourdan, M. KahrauF. Klein, P. König, A. Kozlov, H. Kramer, K. W. Krygier, J. Lac, A. Liesenfeld, S. Malov, J. McIntyre, H. Merkel, P. Merle, U. Müller, R. Neuhausen, E. A.J.M. Offermann, M. Potokar, R. D. Ransome, A. Richter, G. Rosner, J. Sanner, H. Schmieden, M. Seimetz, I. Sick, O. Strähle, A. Süle, A. Wagner, Th Walcher, G. A. Warren, M. Weis, X. Q. Wu

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


For (e→,e′p→) experiments 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.

Original languageEnglish (US)
Pages (from-to)713-725
Number of pages13
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
StatePublished - May 11 2002

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation


  • Analyzing power
  • Proton polarimeter
  • Spin precession


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