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.
Measurements of neutron fields in a wide energy range using multi-foil activation analysis
Chiesa D.; Cazzaniga C.; Nastasi M.; Rebai M.; Frost C.D.; Gorini G.; Lilley S.; Pozzi S.; Previtali E.
ID | 468755 |
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DOI | 10.1109/TNS.2021.3138636 |
PRODUCT TYPE | Journal Article |
LAST UPDATE | 2022-11-11T12:24:15Z |