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EnglishIn this paper we describe the development and first tests of a neutron spectrometer designed for high flux environments, such as the ones found in fast nuclear reactors. The spectrometer is based on the conversion of neutrons impinging on <sup>6</sup>Li into α and t whose total energy comprises the initial neutron energy and the reaction Q-value. The <sup>6</sup>LiF layer is sandwiched between two CVD diamond detectors, which measure the two reaction products in coincidence. The spectrometer was calibrated at two neutron energies in well known thermal and 3 MeV neutron fluxes. The measured neutron detection efficiency varies from 4.2×10<sup>-4</sup> to 3.5×10<sup>-8</sup> for thermal and 3 MeV neutrons, respectively. These values are in agreement with Geant4 simulations and close to simple estimates based on the knowledge of the <sup>6</sup>Li(n,α)t cross-section. The energy resolution of the spectrometer was found to be better than 100 keV when using 2.5 or 5 m cables between the detector and the preamplifiers.
Osipenko, M., Ripani, M., Ricco, G., Caiffi, B., Pompili, F., Pillon, M., et al. (2015). Neutron spectrometer for fast nuclear reactors. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 799, 207-213.
| Tipologia: | Articolo su rivista |
| Citazione: | Osipenko, M., Ripani, M., Ricco, G., Caiffi, B., Pompili, F., Pillon, M., et al. (2015). Neutron spectrometer for fast nuclear reactors. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 799, 207-213. |
| URL: | http://www.sciencedirect.com/science/journal/01689002 |
| Lingua: | English |
| Settore Scientifico Disciplinare: | Settore FIS/01 - Fisica Sperimentale |
| Revisione (peer review): | Esperti anonimi |
| Tipo: | Articolo |
| Rilevanza: | Rilevanza internazionale |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.nima.2015.07.050 |
| Stato di pubblicazione: | Pubblicato |
| Data di pubblicazione: | 2015 |
| Titolo: | Neutron spectrometer for fast nuclear reactors |
| Autori: | |
| Autori: | Osipenko, M; Ripani, M; Ricco, G; Caiffi, B; Pompili, F; Pillon, M; Angelone, M; Verona-Rinati, G; Cardarelli, R; Mila, G; Argiro, S |
| Appare nelle tipologie: | 01 - Articolo su rivista |
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| MIM 2015 Neutron spectrometer.pdf | N/A | Copyright dell'editore | Open Access Visualizza/Apri |
http://hdl.handle.net/2108/134070
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