Scattered Beam Monitors for the MOLLER Experiment

ORAL

Abstract

Rigorous controls are required to meet the precision of the MOLLER Experiment in Jefferson Lab's Hall A. The MOLLER measurement of the electron-electron scattering parity-violating asymmetry results in the most precise determination of the weak mixing angle at low energies. The nature of such an experiment requires deep understanding of systematic uncertainties and potential false asymmetries. The Scattered Beam Monitors (SBMs) contribute to this understanding. This subsystem of integrating cherenkov detectors are located such that the expected physics asymmetry is low in comparison to the main detector, allowing a sensitive monitor for false asymmetries. In this talk, I will give an overview of the components of the SBMs: Small Angle Monitors, Large Angle Monitors, and Diffuse Beam Monitors and present experimental comparisons to Monte Carlo simulation.

*The Virginia Tech work on the MOLLER experiment is supported by National Science Foundation awards 2012995 and 2013023.

Presenters

  • Daniel Valmassei

    • Virginia Tech

Authors

  • Daniel Valmassei

    • Virginia Tech
  • Mark Louis Pitt

    • Virginia Tech
  • Devi Lal Adhikari

    • Virginia Tech
  • Andrew M Gunsch

    • Coe College
    • Virginia Tech