Performance of 0.5 × 106 sensitive elements pixel telescope in the WA97 heavy ion experiment at CERN

Abstract A silicon pixel telescope, consisting of seven planes for a total of about 0.5 M sensor elements with size of 75 μ m × 500 μ m, was successfully employed in the WA97 experiment at CERN. We describe here the overall performance of the detector; we also report some early results from PbPb and p-Pb runs, showing the powerful capability to measure particle momenta and the effective mass of hyperons with a good resolution.