Double-GEM based thermal neutron detector prototype

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Serra Filho, L. A. ; dos Santos, R. Felix ; de Souza, G. G. A. ; Paulino, M. M. M. ; Souza, F. A. ; Moralles, M. ; da Luz, H. N. ; Bregant, M. ; Munhoz, M. G. ; Lai, C-C ; Hoglund, C. ; Svensson, P-O ; Robinson, L. ; Hall-Wilton, R.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Instrumentation; v. 17, n. 9, p. 17-pg., 2022-09-01.

Resumo

The 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 (B4C)-B-10 layer as a neutron converter material. GEANT4 simulations were performed predicting an efficiency of (3.14 +/- 0.10)%, agreeing within 2.7 sigma 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. (AU)

• Processo FAPESP: 12/04583-8 - Física nuclear de altas energias no RHIC e LHC
• Beneficiário: Marcelo Gameiro Munhoz
• Modalidade de apoio: Auxílio à Pesquisa - Temático