TY - JOUR
T1 - Preliminary results from integrating Compton photon polarimetry in Hall A of Jefferson Lab
AU - Parno, D.
AU - Friend, M.
AU - Benmokhtar, F.
AU - Franklin, G.
AU - Michaels, R.
AU - Nanda, S.
AU - Quinn, B.
AU - Souder, P.
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=80455168778&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80455168778&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/312/5/052018
DO - 10.1088/1742-6596/312/5/052018
M3 - Conference Article
AN - SCOPUS:80455168778
SN - 1742-6588
VL - 312
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - SECTION 5
M1 - 052018
T2 - International Nuclear Physics Conference 2010, INPC2010
Y2 - 4 July 2010 through 9 July 2010
ER -