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A gas proportional scintillator counter for thermal neutrons instrumentation
Manzin, G.; Guerard, B.; Fraga, F. A. F.; Margato, L. M. S.A gaseous scintillation detector consisting of a 3He+CF4 filled MSGC detector coupled with an optical readout has been investigated for an application for high-resolution and high counting rate position-sensitive neutron detector. Measurements of the photons' emission as a function of the gas mixture have been carried out indicating that filling the detector with 3He+CF4 is a very good choice also from the poin...
Time analysis of the light pulses on gaseous active scintillators using GEMs wi...
Margato, L. M. S.; Fraga, F. A. F.; Fetal, S. T. G.; Fraga, M. M. F. R.; Marques, R. Ferreira; Policarpo, A. J. P. L; Guerard, B.; Manzin, G.The time structure of light pulses from GEM detectors operated in scintillation mode with He/CF4 mixtures, previously used with integrating readout devices for neutron detection, has been investigated. A system using photomultipliers (PMs) and charge preamplifiers coupled to a fast digitizer has been used to measure simultaneously both the charge and light signals of the avalanches and the dependence of these s...
CCD readout of GEM-based neutron detectors
Fraga, F. A. F.; Margato, L. M. S.; Fetal, S. T. G.; Fraga, M. M. F. R.; Marques, R. Ferreira; Policarpo, A. J. P. L; Guerard, B.; Oed, A.; Manzini, G.We report on the optical readout of the gas electron multiplier (GEM) operated with a gaseous mixture suitable for the detection of thermal neutrons: 3He-CF4. A CCD system operating in the 400-1000 nm band was used to collect the light. Spectroscopic data on the visible and NIR scintillation of He-CF4 are presented. Images of the tracks of the proton and triton recorded with a triple GEM detector are also shown...
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