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Test of an electromagnetic calorimeter using BaF2 scintillators and photosensitive wire chambers between 1 and 9 GeV

1988; Elsevier BV; Volume: 267; Issue: 1 Linguagem: Inglês

10.1016/0168-9002(88)90631-6

1872-9576

R. Bouclier, G. Charpak, Wei Gao, G. Million, P. Miné, S. Paul, J.C. Santiard, D. Scigocki, N. Solomey, M. Suffert,

Nuclear Physics and Applications

Abstract We describe an electromagnetic calorimeter constructed from layers of BaF2 crystals, coupled to low pressure MWPCs with hot TMAE gas as the photosensitive constituent. By making use of the fast component from the BaF2 scintillation, this detector is well suited for a high rate, intense radiation environment. We present the results of a test performed with our prototype in a 1–9 GeV/c beam, which gives an energy resolution better than 4% E , a position resolution of 1 mm, and a time resolution better than 1 ns. The detector is highly segmented, with tracking capabilities and good e/π rejection. We discuss the possible application to experiments with intense colliders.