Proton Polarimeter Calibration between 82 and 217 MeV

Abstract

The proton analyzing power in carbon has been measured for energies of 82 to 217 MeV and proton scattering angles of 5 to 41 degrees. The measurements were carried out using polarized protons from the elastic scattering H(pol. e, pol. p) reaction and the Focal Plane Polarimeter (FPP) in Hall A of Jefferson Lab. A new parameterization of the FPP p-C analyzing power was fit to the data, which is in good agreement with previous parameterizations and provides an extension to lower energies and larger angles. The main conclusions are that all polarimeters to date give consistent measurements of the carbon analyzing power, independently of the details of their construction and that measuring on a larger angular range significantly improves the polarimeter figure of merit at low energies.

18 pages, 6 figures, submitted to NIM A

References in corpus (1)

• Polarization Observables in Deuteron Photodisintegration below 360 MeV

Cited by in corpus (6)

• High Precision Measurement of the Proton Elastic Form Factor Ratio ${\mu }_p{G}_E/G_M$ at low $Q^2$
• Low Q^2 measurements of the proton form factor ratio $m{u}_p{G}_E/G_M$
• Measurement of the ${}^{1}H$($\vec{\gamma }$, $\vec{p}$)${\pi }^0$ reaction using a novel nucleon spin polarimeter
• Ejectile Polarization for ${}^{2}H(e,e^{\prime }\vec{p})n$ at GeV energies
• Polarization Observables in Deuteron Photodisintegration below 360 MeV
• A concept for the experimental determination of the nucleon electric to magnetic form factor ratio at very low $Q^2$