We describe a silicon sampling shower detector conceived as a fine grain imaging device to carry out studies on the antimatter component in the cosmic radiation. This instrument, that will be flown during the 1993 balloon flight campaign, is formed by 5 xy sensitive layers (strip pitch 3.6mm) interleaved with 4 showering material planes (tungsten 1 radiation lenght) having low power consumption electronic readout.
Wizar Collaboration Mass (Fri,) studied this question.
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