Accelerator driven subcritical system neutron spectra determination issues

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F17%3APU137183" target="_blank" >RIV/00216305:26220/17:PU137183 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Accelerator driven subcritical system neutron spectra determination issues

Popis výsledku v původním jazyce

Accelerator Driven Subcritical Systems are reactors with very complex neutron spectra very much depending on primary accelerated particle induced neutron source reaction. The most powerful neutron source for ADSS applications is a spallation reaction of heavy target (Pb, Bi, U) and light ion beam (proton, deuteron, or light ion with energy of several hundreds MeV up to several GeV per nucleon). According to development of spallation neutron sources around the world (SNS, ESS, JSNS, CSNS) determination and simulation of total number of neutrons is quite well developed, however, very fast group of neutron spectra might be systematically underestimated, Nevertheless, cross-section data for this energy group have significant 'white spots', what together with incorrect group-wise spectral flux density determination might cause important reaction rates discrepancies. Conventional fast neutron detection methods, like ToF, Bonner spheres, or proton recoil, are very hard to use, or their utilization is limited

Název v anglickém jazyce

Accelerator driven subcritical system neutron spectra determination issues

Popis výsledku anglicky

Accelerator Driven Subcritical Systems are reactors with very complex neutron spectra very much depending on primary accelerated particle induced neutron source reaction. The most powerful neutron source for ADSS applications is a spallation reaction of heavy target (Pb, Bi, U) and light ion beam (proton, deuteron, or light ion with energy of several hundreds MeV up to several GeV per nucleon). According to development of spallation neutron sources around the world (SNS, ESS, JSNS, CSNS) determination and simulation of total number of neutrons is quite well developed, however, very fast group of neutron spectra might be systematically underestimated, Nevertheless, cross-section data for this energy group have significant 'white spots', what together with incorrect group-wise spectral flux density determination might cause important reaction rates discrepancies. Conventional fast neutron detection methods, like ToF, Bonner spheres, or proton recoil, are very hard to use, or their utilization is limited

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10304 - Nuclear physics

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů