The Tracking System and Kinematics Measurement for the MOLLER Experiment

MOLLER (Measurement Of a Lepton-Lepton Electroweak Reaction) is a parity-violating experiment set to start running in Jefferson Laboratory's experimental Hall A in 2025. The parity-violating asymmetry of M\o ller scattered electrons, A_PV, will be measured and used to probe the weak charge of the electron, Q_W^e, to never before seen levels of precision. At tree level, the overall factor that correlates Q_W^e to A_PV is called the kinematic factor, Α, and is dependent on the incoming beam energy and center of mass scattering angle of the electron. A vital component of MOLLER will be its tracking system which will be used for kinematics measurements and will allow us to determine the kinematic factor.

Calibration of our tracking system and verification of our kinematics must be completed in order to calculate Q_W^e​​​​​​​ to the desired level of precision. The ongoing effort to prepare for this involves using Monte Carlo based Geant-4 simulations to optimize the design of our tracking system. This talk will overview the tracking system and the plan for our kinematics measurement.