2021/10/31 by D. Chiesa, C. Cazzaniga, Carlo Cazzaniga +9 · 2 citations
Engineering · Physics and Astronomy · #Nuclear Physics and Applications #Nuclear reactor physics and engineering #Radiation Detection and Scintillator Technologies #nucl-ex #physics.ins-det
paper · pdf · doi:10.1109/tns.2021.3138636
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openalex created_date 2021/10/25 · openalex publication_date 2021/12/29 · crossref created 2021/12/29 · arxiv created 2022/03/15 · arxiv updated 2022/03/16 · crossref issued 2022/07/01 · crossref published 2022/07/01 · crossref published-print 2022/07/01 · crossref deposited 2024/01/13 · crossref indexed 2026/07/30 · openalex updated_date 2026/07/30
An accurate characterization of the neutron fields at spallation sources is crucial for many applications based on neutron irradiations, such as radiation damage tests that need a precise dose estimate. In this work we present the neutron flux measurements performed with the multi-foil activation technique in the ROTAX and ChipIr beamlines of the ISIS spallation source, characterized by moderated and unmoderated spectra, respectively. We selected many different activation reactions to cover a wide energy range, from thermal to very fast neutrons up to about 100 MeV. By applying a Bayesian unfolding algorithm, we demonstrate the effectiveness of this technique in measuring the neutron flux intensity and energy spectrum with precision and accuracy.