Self-Powered Neutron Detectors (SPNDs) are currently used in reactors’ environmentto sense the magnitude of neutron-uxes, usually for spatial-distribution mapping ofthe fuel region as to optimize burn-up strategies. During the development of tailoredinstrumentation for Lead-cooled Fast Reactors, the possibility to perform online spec-tral deconvolution of fast neutron-uxes was recognized. Seven geometrically simi-lar SPNDs with dierent neutron-sensitive materials, have been characterized by theMonte Carlo transport code MCNPX. anks to a database of spectral sensitivitiesvs. neutrons’ energy, a mathematical deconvolution process from 7 electric currentvalues virtually measured by SPNDs was started, retrieving spectral information, interms of 7 energy windows, of the neutron-ux the detectors are subjected by. ispaper describes the procedure that led to those results, preguring future develop-ment to improve proposed method.
A proposal for an alternative use of prompt-Self Powered Neutron Detectors: Online spectral-deconvolution for monitoring high-intensity neutron flux in LFRs / Lepore, Luigi; Remetti, Romolo; Pietropaolo, Antonino. - In: NUCLEAR ENGINEERING AND DESIGN. - ISSN 0029-5493. - STAMPA. - 322:(2017), pp. 536-546. [10.1016/j.nucengdes.2017.07.028]
A proposal for an alternative use of prompt-Self Powered Neutron Detectors: Online spectral-deconvolution for monitoring high-intensity neutron flux in LFRs
LEPORE, LUIGI;REMETTI, Romolo;
2017
Abstract
Self-Powered Neutron Detectors (SPNDs) are currently used in reactors’ environmentto sense the magnitude of neutron-uxes, usually for spatial-distribution mapping ofthe fuel region as to optimize burn-up strategies. During the development of tailoredinstrumentation for Lead-cooled Fast Reactors, the possibility to perform online spec-tral deconvolution of fast neutron-uxes was recognized. Seven geometrically simi-lar SPNDs with dierent neutron-sensitive materials, have been characterized by theMonte Carlo transport code MCNPX. anks to a database of spectral sensitivitiesvs. neutrons’ energy, a mathematical deconvolution process from 7 electric currentvalues virtually measured by SPNDs was started, retrieving spectral information, interms of 7 energy windows, of the neutron-ux the detectors are subjected by. ispaper describes the procedure that led to those results, preguring future develop-ment to improve proposed method.| File | Dimensione | Formato | |
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