Correlation Matrix Method for Pb/Scint Sampling Calorimeter

The main subject of this talk is the study of EM and hadron shower fluctuations. The average behavior of cascade showers has been investigated by many experiments using incident particles at various energies. By looking at individual cascade showers, we can explain their characteristic features. For this study, we use pulse height deviation at a depth (δi), which is defined event-by-event as the deviation of pulse height from the average. Then, we calculate a matrix called “correlation matrix”, which represents the strength of the correlation of the pulse height deviations at two depths [1]. We use this matrix as a tool to investigate the shower fluctuation. The details of the correlation matrix are given in section 3. The objectives of this study are the understanding of shower fluctuations using the correlation matrix.