Pion Reconstruction for Calibration of the PHENIX Muon Piston Calorimeter in Au+Au Collisions at RHIC

The PHENIX Muon Piston Calorimeter (MPC) is a useful tool for analyzing p+p, d+Au, Au+Au collisions at RHIC. Covering forward and backward pseudorapidities (3.1 $< \vert \eta \vert <$ 3.7) the detector has already been used in p+p and d+Au analyses. We are currently calibrating the detector for use in analyzing Au+Au data. Pion reconstruction is one of several methods by which to calibrate the towers of the MPC. Progress on these calibrations will be reported.