Systematic study of Kπ production in the reaction K±p→KS0π±p: technique and measurements at 10 GeV/c

A two-arm spectrometer for simple event topologies is described. Its main characteristics are: (i) large solid-angle acceptance for the forward emitted particles, owing to the absence of magnetic-momentum analysis; (ii) high-resolution time-of-flight measurement of the recoil proton, in the momentum-transfer range 0.05 < |t| < 1 (GeV/c)2; (iii) high data-taking rate and on-line pattern recognition.