Longitudinal leakage correction of uniformly sampling electromagnetic calorimeter

Correction of longitudinal energy leakage for a lead scintillating fiber sandwiched electromagnetic calorimeter was studied. Electron data from AMS beam test in 2002 was analyzed. Gamma-Function-Fit and Last-Layer-Energy-Deposit methods were used to correct longitudinal energy leakage. The linearity and resolution of energy were clearly improved after the correction. And the Last-Layer-Energy-Deposit method is more effective on energy resolution improving.