Tests of the module array of the ECAL0 electromagnetic calorimeter for the COMPASS experiment with the electron beam at ELSA

Abstract

The array of 3×3 modules of the electromagnetic calorimeter ECAL0 of the COMPASS experiment at CERN has been tested with an electron beam of the ELSA (Germany) facility. The dependence of the response and the energy resolution of the calorimeter on the angle of incidence of the electron beam has been studied. A good agreement between the experimental data and the results of Monte Carlo simulation has been obtained. It will signiˇcantly expand the use of simulation to optimize event reconstruction algorithms. Ô²¥±É•μ´´μ³ ¶Êα¥ ʸ±μ•¨É¥²Ö ELSA (ƒ¥•³ ´¨Ö) ¡Ò² ¨¸¸²¥¤μ¢ ´ ¸¡μ•± ¨ § 3 × 3 ³μ¤Ê²¥°Ô ²¥±É•μ³ £´¨É´μ£μ ± ²μ•¨³¥É• ECAL0 Ê¸É ´μ¢±¨COMPASS (-…).ˆ §ÊÎ ²¨¸Ó § ¢¨¸¨³μ¸Éμ ɱ²¨± ¨Ô´¥•£¥É¨Î¥¸±μ£μ • §•¥Ï¥´¨Ö ± ²μ•¨³¥É• μÉ Ê£² ¶ ¤¥´¨Ö ¶Êα Ô²¥±É•μ´μ¢. μ²ÊÎ¥´μ Ìμ•μÏ¥¥¸μ£² ¸¨¥ Ô±¸ ¶¥•¨³¥´É ²Ó´ÒÌ ¤ ´´Ò̸•¥ §Ê²ÓÉ É ³¨• ¸Î¥Éμ¢ ³¥Éμ¤μ³ OEμ´É¥-Š •²μ, ÎÉμ ¶μ §¢μ²¨É¸ÊÐ¥¸É¢¥´´μ • ¸Ï¨•¨ÉÓ ¶•¨³¥´¥´¨¥ ³μ¤¥²¨•μ¢ ´¨Ö ¤²Ö μ ¶É¨³¨ § ͨ¨ ²£μ•¨É³μ¢ •¥±μ´-ɕʱͨ¨¸μ¡Òɨ°.