First results from electron data with the CALICE tile HCAL prototype at the CERN test-beam

A prototype hadronic calorimeter for the ILC detector was installed and tested during summer 2006 at the CERN SPS facilities. The detector consisting of about 5000 channels read out via Silicon-Photo-multipliers has been commissioned and cal- ibrated. Data have been collected with electron and hadron beams in the energy range between 6 and 80 GeV. A first part of the analysis focuses on the electromag- netic shower reconstruction . Though somewhat simpler than hadronic shower re- construction this analysis is crucial to demonstrate the quality of the calibration and detector understanding by comparing the data to well established shower simula- tions. This contribution focuses on the commissioning of the AHCAL detector, on the calibration procedure and performance, and on first results of the electromagnetic shower analysis.