Measurements of Neutron Fields in a Wide Energy Range Using Multi-Foil Activation Analysis

被引:2
|
作者
Chiesa, D. [1 ,2 ]
Cazzaniga, C. [3 ]
Nastasi, M. [1 ,2 ]
Rebai, M. [2 ,4 ,5 ]
Frost, C. D. [3 ]
Gorini, G. [1 ,2 ]
Lilley, S. [3 ]
Pozzi, S. [1 ,2 ]
Previtali, E. [1 ,2 ]
机构
[1] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy
[2] INFN, Sez Milano Bicocca, I-20126 Milan, Italy
[3] Rutherford Appleton Lab, ISIS Facil, UKRI STFC, Didcot OX11 0QX, Oxon, England
[4] Univ Milano Bicocca, Dept Phys, I-20126 Milan, Italy
[5] CNR, Ist Sci & Tecnol Plasmi, I-20125 Milan, Italy
关键词
Neutrons; Atmospheric measurements; Energy measurement; Detectors; Semiconductor device measurement; Radiation effects; Protons; Activation analysis; Bayesian unfolding; gamma spectroscopy; neutron flux; spallation source; CROSS-SECTIONS; NUCLEAR-DATA; FLUX; ENDF/B-VII.1; IRRADIATION; SIMULATION;
D O I
10.1109/TNS.2021.3138636
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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.
引用
收藏
页码:1659 / 1666
页数:8
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