A silicon-tungsten calorimeter has been developed to be flown in the Wizard/CAPRICE balloon borne experiment to measure the flux of antiprotons, positrons and light nuclei in the cosmic radiation. The calorimeter is composed of 8 x, y silicon sampling planes [active area (48 x 48) cm²} interleaved with 7 tungsten absorbers (7 radiation lengths) ; it provides the topology of the interacting events together with an independent measurement of the deposited energy. Details of the front -end electronics and the read-out system are given and the overall performances during pre-flight ground operations are described as well.
G. et al. (Thu,) studied this question.