The performance of crisis and its calibration

Abstract We describe the calibration of CRISIS, a charge sensitive drift chamber which makes possible the identification of charged particles with momentum between 5 and 100 GeV/ c . Results indicate an optimum resolution of (7.1 ± 0.2)% fwhm, which is an improvement over the predicted value of 7.8%. We characterize the efficiency for particle identification by the ratio b = (separation between π and p)/( σ π + σ p . We achieve a value of (0.94 ± 0.02), which compares favorably with the theoretical value of 0.87 at 200 GeV. In addition to particle identification, the data from this detector will augment the other components of the Fermilab hybrid spectrometer to reconstruct particle trajectories in real space.