The Main Detector and Electronics for the MOLLER Experiment

The MOLLER (Measurement Of a Lepton Lepton Electroweak Reaction) experiment at Jefferson Lab is designed to measure the parity-violating asymmetry in polarized electron-electron (Moller) scattering. The experimental goal is to measure the predicted 35 parts per billion (ppb) asymmetry to 0.7 ppb, from which the weak mixing angle sin²θ_W can be determined to approximately 0.1%. At such a high precision, the measurement would provide a sensitive test of the Standard Model and enhance the search for new physics at multi-TeV scale. The experiment will be carried out mainly in integrating mode for asymmetry measurement and periodically in event mode for kinematics and background studies. An array of radiation hard fused-silica Cerenkov detectors is employed to measure the scattered electrons. The detector signals in both operating modes are processed by a set of dedicated electronics. In this talk, I shall provide an overview of the MOLLER main detector system, with an emphasis on its integrating electronics development.