The G0 Experiment: Apparatus for Parity-Violating Electron Scattering Measurements at Forward and Backward Angles

Abstract

In the G0 experiment, performed at Jefferson Lab, the parity-violating elastic scattering of electrons from protons and quasi-elastic scattering from deuterons is measured in order to determine the neutral weak currents of the nucleon. Asymmetries as small as 1 part per million in the scattering of a polarized electron beam are determined using a dedicated apparatus. It consists of specialized beam-monitoring and control systems, a cryogenic hydrogen (or deuterium) target, and a superconducting, toroidal magnetic spectrometer equipped with plastic scintillation and aerogel Cerenkov detectors, as well as fast readout electronics for the measurement of individual events. The overall design and performance of this experimental system is discussed.

Submitted to Nuclear Instruments and Methods

References in corpus (12)

• Strange Quark Contributions to Parity-Violating Asymmetries in the Forward G0 Electron-Proton Scattering Experiment
• Precision Measurements of the Nucleon Strange Form Factors at Q^2 ~0.1 GeV^2
• Parity-violating electroweak asymmetry in $\vec{e}p$ scattering
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• The SAMPLE Experiment and Weak Nucleon Structure
• Parity-Violating Electron Scattering and Neucleon Structure
• A high-precision polarimeter
• A systematic study of polarized electron emission from strained GaAs/GaAsP superlattice photocathodes
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• Nucleon Charge Symmetry Breaking and Parity Violating Electron-Proton Scattering
• The Cryogenic Target for the G${}^0$ Experiment at Jefferson Lab
• G${}^0$ Electronics and Data Acquisition (Forward-Angle Measurements)

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