Abstract
The magnetised Iron CALorimeter detector (ICAL), proposed to be builtat the India-based Neutrino Observatory (INO), is designed to studyatmospheric neutrino oscillations. The ICAL detector is optimized tomeasure the muon momentum, its direction and charge. A GEANT4-basedpackage has been developed by the INO collaboration to simulate the ICALgeometry and propagation of particles through the detector. The simulatedmuon tracks are reconstructed using the Kalman Filter algorithm. Herewe present the first study of the response of the ICAL detector tomuons using this simulations package to determine the muon momentumand direction resolutions as well as their reconstruction and chargeidentification efficiencies. For 1–20 GeV/c muons in the central regionof the detector, we obtain an average angle-dependent momentum resolutionof 9–14%, an angular resolution of about a degree, reconstructionefficiency of about 80% and a correct charge identification of about98%.
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