Speaker
Description
The MOLLER experiment at Jefferson Lab aims to measure the parity violating asymmetry(𝐴PV) in electron-electron(Møller) scattering. The prediction for 𝐴PV in the current experimental design is ≈33parts per billion (ppb) and the goal is to measure this quantity with an overall uncertainty of 0.8 ppb. This measurement depends on the precise determination of the electron beam’s polarization.
Compton polarimetry leverages the scattering of polarized photons from the electron beam to determine its polarization with high accuracy. To meet the stringent MOLLER requirements, we are developing a novel electron detector combining layered diamond microstrip detectors and high-voltage monolithic active pixel sensors (HVMAPS). Concurrently, robust laser polarization measurements and careful characterization of photon detector linearity provide accurate electron polarization determination. Along with hardware optimization, I will talk briefly on robust data analysis approaches under
study to achieve the sub-percent level precision required for the success of MOLLER.
