Performance of an accordion electromagnetic calorimeter with liquid krypton

摘要

Beam test results of the liquid krypton electromagnetic calorimeter with a projective accordion type electrode structure are presented. The electrode had a fine segmentation in the front to enhance (pi)(sup 0) rejection and pointing. The test was carried out at the H4 line at the CERN SPS with e(sup (minus)) beams between 20 and 200 GeV. Preliminary results of energy resolution, linearity, (mu) response and the dependence of the energy resolution on the amount of inactive material in front of the calorimeter are presented.