Design and Performance of the Spin Asymmetries of the Nucleon Experiment

Abstract

The Spin Asymmetries of the Nucleon Experiment (SANE) performed inclusive, double-polarized electron scattering measurements of the proton at the Continuous Electron Beam Accelerator Facility at Jefferson Lab. A novel detector array observed scattered electrons of four-momentum transfer $2.5<Q^2<6.5$ GeV${}^2$ and Bjorken scaling $0.3<x<0.8$ from initial beam energies of 4.7 and 5.9 GeV. Employing a polarized proton target whose magnetic field direction could be rotated with respect to the incident electron beam, both parallel and near perpendicular spin asymmetries were measured, allowing model-independent access to transverse polarization observables $A_1$, $A_2$, $g_1$, $g_2$ and moment $d_2$ of the proton. This document summarizes the operation and performance of the polarized target, polarized electron beam, and novel detector systems used during the course of the experiment, and describes analysis techniques utilized to access the physics observables of interest.

References in corpus (14)

• Measurements of the Proton and Deuteron Spin Structure Functions g1 and g2
• Recoil Polarization Measurements of the Proton Electromagnetic Form Factor Ratio to Q^2 = 8.5 GeV^2
• A Measurement of the Electric Form Factor of the Neutron through $\vec{d}(\vec{e},e^{\prime }n)p$ at $Q^2=0.5$ (GeV/c)${}^2$
• Precision Measurement of the Proton and Deuteron Spin Structure Functions g2 and Asymmetries A2
• Empirical Fit to Precision Inclusive Electron-Proton Cross Sections in the Resonance Region
• Empirical Fit to Inelastic Electron-Deuteron and Electron-Neutron Resonance Region Transverse Cross Sections
• Measurement of the Proton and Deuteron Spin Structure Functions g2 and Asymmetry A2
• Polarization Transfer Observables in Elastic Electron Proton Scattering at $Q^2=$2.5, 5.2, 6.8, and 8.5 GeV${}^2$
• Proton G_E/G_M from beam-target asymmetry
• A high-precision polarimeter
• Polarization Transfer in Proton Compton Scattering at High Momentum Transfer
• Inclusive Hadron Photoproduction from Longitudinally Polarized Protons and Deuterons
• A Threshold Gas Čerenkov Detector for the Spin Asymmetries of the Nucleon Experiment
• Probing Proton Spin Structure: A Measurement of g2p at Four-momentum Transfer of 2 to 6 GeV^2

Cited by in corpus (3)

• Revealing Color Forces with Transverse Polarized Electron Scattering
• Proton Form Factor Ratio, ${\mu }_p{G}_E^p/G_M^p$ from Double Spin Asymmetry
• Technical Supplement to "Polarization Transfer Observables in Elastic Electron-Proton Scattering at Q${}^2$ = 2.5, 5.2, 6.8, and 8.5 GeV${}^2$"