Simulation studies of the Muon Capture Rate measurement using the EM calorimeter in the Mu2e Experiment

This poster will introduce Fermilab’s Mu2e experiment and its purpose as well as provide prerequisite background knowledge needed to understand the high energy particle physics concepts used. In order to achieve the Mu2e goal for a precise measurement of the rate of muon to electron conversion in the field of a nucleus, an accurate knowledge of the muon-stopping rate is needed. The experiment is required to measure the muon-stopping rate with an overall accuracy of 10%. A direct measurement is preferred and the experiment’s solution is to perform this task with the Stopping Target Monitor detector.

In order to perform a faster and independent measurement of the muon-stopping rate, the experiment will carry out such a measurement using few high light yield crystals placed inside the calorimeter disk. This system has been named CAPHRI (Calorimeter Precise High-Resolution Intensity) and it employs four LYSO (Cerium doped Lutetium-based scintillation) crystals that have been inserted in the calorimeter upstream disk.

The goal of my presentation is to give an explanation of the workings of the Mu2e EM calorimeter and its accompanying CAPHRI system and show some preliminary results using a full simulation of the Mu2e detector.