Study of neutron sensitivity in CMS-RPC using MC simulation for two different setups

In order to investigate the neutron sensitivity we applied a realistic MC simulation based on GEANT3 code with MICAP and FLUKA interfaces for two different types of resistive plate chambers for CMS/LHC. In the present studies sensitivity calculations have been performed as a function of neutron energy in the range of 100 eV to 1 GeV. In the first setup using aluminum (GND+strips), the sensitivity for an isotropic neutron source was obtained to be Sn<9.04×10-3 at <100 MeV, while for the second setup using copper (GND+strips) sensitivity for the same source configuration is Sn<9.91×10-3 at <100MeV. Both the results are relative to an RPC in double-gap configuration with an isotropic neutron source. Additionally in these setups similar characteristics have been observed for parallel neutron source configuration.