Resistive Plate Chambers for thermal neutron detection have been developed and prototypes of the detector have been built. A 10B4C thin coating on the inner surface of one of the electrodes of the RPC is used as a thermal neutron converter via the 10B(n,α)7Li reaction. Monte Carlo calculations show that a conversion efficiency of about 2% for neutrons from a moderated beam can be achieved with a 3 μm 10B4C layer. Converter coatings on glass plates have been tested with thermalised neutrons from a 252Cf source (INFN Laboratori Nazionali Legnaro). The energy spectra, measured with a Si detector for different converter thicknesses, are well reproduced by simulation. A prototype RPC, with 10 × 10 cm2 glass electrodes and a 2 mm gap, has been built, characterised with cosmic rays and tested in avalanche mode with a low energy neutron beam at the european research centre IRMM (Geel, Belgium). A description of the prototype is presented, together with the results of experimental tests.

Thermal neutron detection with Resistive Plate Chambers via the B-10(n,alpha)Li-7 reaction / R. Arnaldi; A. Baldit; V. Barret; N. Bastid; G. Blanchard; E. Chiavassa; A. Colla; P. Cortese; P. Crochet; G. Dellacasa; A. Devaux; N. De Marco; P. Dupieux; A. Ferretti; P. Force; B. Forestier; M. Gagliardi; M. Gallio; R. Gemme; S. Grigoryan; F. Guerin; R. Guernane; C. Insa; F. Jouve; F. Manso; P. Mereu; A. Musso; C. Oppedisano; A. Piccotti; F. Poggio; L. Royer; P. Rosnet; P. Saturnini; E. Scomparin; G. Travaglia; E. Vercellin; F. Yermia. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 158(2006), pp. 177-181. ((Intervento presentato al convegno 8th International Workshop on Resistive Plate Chambers and Related Detectors tenutosi a Seoul, Korea nel 10-12 ottobre 2005.

Thermal neutron detection with Resistive Plate Chambers via the B-10(n,alpha)Li-7 reaction

CHIAVASSA, Emilio Luciano;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;POGGIO, FRANCESCA;VERCELLIN, Ermanno;
2006

Abstract

Resistive Plate Chambers for thermal neutron detection have been developed and prototypes of the detector have been built. A 10B4C thin coating on the inner surface of one of the electrodes of the RPC is used as a thermal neutron converter via the 10B(n,α)7Li reaction. Monte Carlo calculations show that a conversion efficiency of about 2% for neutrons from a moderated beam can be achieved with a 3 μm 10B4C layer. Converter coatings on glass plates have been tested with thermalised neutrons from a 252Cf source (INFN Laboratori Nazionali Legnaro). The energy spectra, measured with a Si detector for different converter thicknesses, are well reproduced by simulation. A prototype RPC, with 10 × 10 cm2 glass electrodes and a 2 mm gap, has been built, characterised with cosmic rays and tested in avalanche mode with a low energy neutron beam at the european research centre IRMM (Geel, Belgium). A description of the prototype is presented, together with the results of experimental tests.
8th International Workshop on Resistive Plate Chambers and Related Detectors
Seoul, Korea
10-12 ottobre 2005
158
177
181
R. Arnaldi; A. Baldit; V. Barret; N. Bastid; G. Blanchard; E. Chiavassa; A. Colla; P. Cortese; P. Crochet; G. Dellacasa; A. Devaux; N. De Marco; P. Dupieux; A. Ferretti; P. Force; B. Forestier; M. Gagliardi; M. Gallio; R. Gemme; S. Grigoryan; F. Guerin; R. Guernane; C. Insa; F. Jouve; F. Manso; P. Mereu; A. Musso; C. Oppedisano; A. Piccotti; F. Poggio; L. Royer; P. Rosnet; P. Saturnini; E. Scomparin; G. Travaglia; E. Vercellin; F. Yermia
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/52691
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