Moon Moon Devi, Anushree Ghosh, Daljeet Kaur, Lakshmi S. Mohan, Sandhya Choubey, Amol Dighe, D. Indumathi, Sanjeev Kumar, M. V. N. Murthy, Md. Naimuddin
We present results of a Monte Carlo simulation study of the hadron energy response (for 1 GeV $\leq$ E $\leq$ 15 GeV) of the magnetized iron calorimeter detector, ICAL, proposed to be located at the India-based Neutrino Observatory. Using a GEANT4 modeling of the ICAL, interactions of atmospheric neutrinos with target nuclei are recorded. We discuss a method of calibration of the hadron energy using the hadron hit multiplicity in the active detector element. We first study the detector response with single pions propagating through the detector. Then the average response of hadrons produced in atmospheric neutrino interactions is analyzed using NUANCE-generated neutrino events. The shape of the distribution and an appropriate fitting function are examined in detail. Finally, the hadron energy resolution is determined as a function of energy. We find an energy resolution of around (60--40)$%$ for hadron energies in the range 2--15 GeV.
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http://arxiv.org/abs/1304.5115
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