Construction and performance of the lead-scintillating fiber calorimeter prototypes for the KLOE detector

Antonelli, A.; Antonelli, M.; Barbiellini, G.; Barone, M.; Bertolucci, S.; Bianco, S.; Bini, C.; Bloise, C.; Bolognesi, V.; Bossi, F.; Campana, P.; Cervelli, F.; Caloi, R.; Cordelli, M.; De Zorzi, G.; Di Cosimo, G.; Di Domenico, A.; Erriquez, O.; Fabbri, F. L.; Farilla, A.; Ferrari, A.; Franzini, P.; Garufi, Fabio; Gauzzi, P.; Gero, E.; Giovannella, S.; Haydar, R.; Incagli, M.; Keeble, L.; Kim, W.; Lanfranchi, G.; Lee Franzini, J.; Martini, A.; Martinis, A.; Miscetti, S.; Murtas, F.; Parri, A.; Passeri, A.; Sarwar, S.; Scuri, F.; Spiriti, E.; Tortora, L.; Wang, X. L.; Wölfle, S.

doi:10.1016/0168-9002(94)01058-7

The KLOE detector is designed primarily for the study of direct CP violation in KO decays. The electromagnetic calorimeter, EmC, is a most demanding element of the detector. Two prototypes of the EmC (one for the barrel and one for the end-cap region) have been built at Frascati and tested at PSI (Switzerland) using beams of electrons, muons and pions of 40 to 290 MeV/e momentum, and at the Frascati LADON facility using photons of 20 to 80 MeV. We observe excellent linearity from 20 to 290 MeV. The energy resolution is sigma(E)/E similar to 4.4%/root E(GeV) and the time resolution is similar to 34 ps/root E(GeV). We found little dependence on incidence angle and entry position. We also determined that some pi/mu identification is possible.

Construction and performance of the lead-scintillating fiber calorimeter prototypes for the KLOE detector / A., A., M., A., G., B., M., B., S., B., S., B., C., B., C., B., V., B., F., B., P., C., F., C., R., C., M., C., G., D.Z., G., D.C., A., D.D., O., E., F. L., F., A., F., et al.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 354:(1995), pp. 352-363. [10.1016/0168-9002(94)01058-7]