Development of a fast simulator for GEM-based neutron detectors
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Gas Electron Multiplier (GEM)-based detectors using a layer of 10B as a neutron
converter is becoming popular for thermal neutron detection. A common strategy to simulate
this kind of detector is based on two frameworks: Geant4 and Garfield++. The first one provides
the simulation of the nuclear interaction between neutrons and the 10B layer, while the second
allows the simulation of the interaction of the reaction products with the detector gas leading
to the ionization and excitation of the gas molecules. Given the high ionizing power of these
nuclear reaction products, a full simulation is very time consuming and must be optimized to
become viable. In this work, we present a strategy to develop a fast simulator based on these two
frameworks that will allow us to generate enough data for a proper evaluation of the expected
performance and optimization of this kind of detector. We will show the first results obtained
with this tool concentrating on its validation and performance.