| The Shower-max detector is an electromagnetic sampling calorimeter that will be used for
MOLLER in order to provide a measurement of the parity-violating rate asymmetry. In order for
the detector to be used, it must be characterized and understood via simulation and experimental
data. The characterization of the detector was conducted in a Cosmic-ray Stand using two methods:
a small coincidence trigger set up for one detector to test multiple small cross-sections and a large
coincidence trigger set up for multiple detectors over the whole of the apparatus. Using these
methods, it was concluded that the expected number of PEs for a detector is about 11.3 ± 0.8 photo
electrons per cosmic-ray muon.
Key Words: Shower-max Detector; cosmic-rays; MOLLER; Photo-electron yield; PhotoMultiplier Tube gain. |