Triple GEM gas detectors as real time fast neutron beam monitors for spallation neutron sources

Abstract

A fast neutron beam monitor based on a triple Gas Electron Multiplier (GEM) detector was developed and tested for the ISIS spallation neutron source in U.K. The test on beam was performed at the VESUVIO beam line operating at ISIS. The 2D fast neutron beam footprint was recorded in real time with a spatial resolution of a few millimeters thanks to the patterned detector readout. © 2012 IOP Publishing Ltd and Sissa Medialab srl.