The GRAAL high resolution BGO calorimeter and its energy calibration and monitoring system
F. Ghio, B. Girolami, M. Capogni, L. Casano, L. Ciciani, A. D'Angelo, R. Di Salvo, L. Hu, D. Moricciani, L. Nicoletti, G. Nobili, C. Schaerf, P. Levi Sandri, M. Castoldi, A. Zucchiatti, V. Bellini
Abstract
We describe the electromagnetic calorimeter built for the GRAAL apparatus at the ESRF. Its monitoring system is presented in detail. Results from tests and the performance obtained during the first GRAAL experiments are given. The energy calibration accuracy and stability reached is a small fraction of the intrinsic detector resolution.
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