Abstract
Resistive plate chamber (RPC) prototypes of 2 m length were simulated
and built. The experimental tests using a 31 MeV electron beam,
discussed in details, showed an efficiency higher than 90\% and an
excellent time resolution of around sigma = 100 ps. Furthermore,
comprehensive simulations were performed by GEANT4 toolkit in order to
study the possible use of these RPCs for fast neutron (200 MeV-1 GeV)
detection and multi-neutron event identification. The validation of
simulation parameters was carried out via a comparison to experimental
data. A possible setup for invariant mass spectroscopy of multi-neutron
emission is presented and the characteristics are discussed. The results
show that the setup has a high detection efficiency. Its capability of
determining the momentum of the outgoing neutrons and reconstructing the
relative energy between the fragments from nuclear reactions is
demonstrated for different scenarios. (C) 2012 Elsevier B.V. All rights
reserved.
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