Designing and Constructing Cherenkov Detectors for the MOLLER Experiment

The Measurement of a Lepton-Lepton Electroweak Reaction (MOLLER) experiment plans to use a series of radiation-hard detectors to measure the parity-violating asymmetry of longitudinally polarized electron-electron (møller) scattering. The experiment uses an 11 GeV electron beam striking a liquid hydrogen target. The scattered electrons are then momentum-analyzed by a magnetic spectrometer before reaching a cylindrical array of radiation-hard fused silica Cherenkov detectors. The detectors designed by our group primarily detect electrons that have undergone møller or elastic electron-proton scattering. To design these detectors we have run optical simulations to optimize their geometry and constructed prototypes based on those simulations. In this talk, I will describe the design and development of our prototypes, how they performed in tests and our future plans for them.