Study of the response of the CALICE silicon-tungsten electromagnetic calorimeter prototype to electrons

A prototype Silicon-Tungsten electromagnetic calorimeter for an ILC detector was installed and tested during summer 2006 at DESY, and subsequently operated at the CERN SPS test beam. The detector consisted of 6480 1x1 cm2 silicon pads. Data were collected with electron and hadron beams in the energy range 1 to 50 GeV. The analysis described here focuses on electromagnetic shower reconstruction. This analysis is crucial in order to demonstrate the quality of the calibration and understanding of the detector through comparison with Monte Carlo simulations. In subsequent analyses, the data will be combined with those recorded with the Calice analogue HCAL and tail catcher (TCMT) in order to study hadronic showers with high spatial precision.