Preliminary results from integrating Compton photon polarimetry in Hall A of Jefferson Lab

D. Parno, M. Friend, F. Benmokhtar, G. Franklin, R. Michaels, S. Nanda, B. Quinn, P. Souder

Research output: Contribution to journalConference article

Abstract

A wide range of nucleon and nuclear structure experiments in Jefferson Lab's Hall A require precise, continuous measurements of the polarization of the electron beam. In our Compton polarimeter, electrons are scattered off photons in a Fabry-Perot cavity; by measuring an asymmetry in the integrated signal of the scattered photons detected in a GSO crystal, we can make non-invasive, continuous measurements of the beam polarization. Our goal is to achieve 1% statistical error within two hours of running. We discuss the design and commissioning of an upgrade to this apparatus, and report preliminary results for experiments conducted at beam energies from 3.5 to 5.9 GeV and photon rates from 5 to 100 kHz.

Original languageEnglish (US)
Article number052018
JournalJournal of Physics: Conference Series
Volume312
Issue numberSECTION 5
DOIs
StatePublished - 2011
EventInternational Nuclear Physics Conference 2010, INPC2010 - Vancouver, BC, Canada
Duration: Jul 4 2010Jul 9 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Parno, D., Friend, M., Benmokhtar, F., Franklin, G., Michaels, R., Nanda, S., Quinn, B., & Souder, P. (2011). Preliminary results from integrating Compton photon polarimetry in Hall A of Jefferson Lab. Journal of Physics: Conference Series, 312(SECTION 5), [052018]. https://doi.org/10.1088/1742-6596/312/5/052018