SERRA FILHO, L.A.FELIX DOS SANTOS, R.SOUZA, G.G.A. dePAULINO, M.M.M.SOUZA, F.A.MORALLES, M.LUZ, H.N. daBREGANT, M.MUNHOZ, M.G.LAI, C.-C.HOGLUND, C.SVENSSON, P.-O.ROBINSON, L.HALL-WILTON, R.2022-12-132022-12-132022SERRA FILHO, L.A.; FELIX DOS SANTOS, R.; SOUZA, G.G.A. de; PAULINO, M.M.M.; SOUZA, F.A.; MORALLES, M.; LUZ, H.N. da; BREGANT, M.; MUNHOZ, M.G.; LAI, C.-C.; HOGLUND, C.; SVENSSON, P.-O.; ROBINSON, L.; HALL-WILTON, R. Double-GEM based thermal neutron detector prototype. <b>Journal of Instrumentation</b>, v. 17, n. 9, p. 1-15, 2022. DOI: <a href="https://dx.doi.org/10.1088/1748-0221/17/09/P09018">10.1088/1748-0221/17/09/P09018</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/33426.1748-0221http://repositorio.ipen.br/handle/123456789/33426The Helium-3 shortage and the growing interest in neutron science constitute a driving factor in developing new neutron detection technologies. In this work, we report the development of a double-GEM detector prototype that uses a 10B4C layer as a neutron converter material. GEANT4 simulations were performed predicting an efficiency of (3.14 ± 0.10)%, agreeing within 2.7σ with the experimental and analytic detection efficiencies obtained by the detector when tested in a 41.8 meV thermal neutron beam. The detector is position sensitive, equipped with a 256+256 strip readout connected to resistive chains, and achieves a spatial resolution better than 3 mm. The gain stability over time was also measured with a fluctuation of about 0.2% h-1 of the signal amplitude. A simple data acquisition with only 5 electronic channels is sufficient to operate this detector.1-15openAccessneutron detectorsfast neutronsgas track detectorsthermal neutronsArtigo de periódico91710.1088/1748-0221/17/09/P09018https://orcid.org/0000-0002-2664-553118.344