Online monitoring of air activation at the China spallation neutron source.
Air activation
Gamma spectrum
Proton accelerator
Radionuclide
Journal
Journal of environmental radioactivity
ISSN: 1879-1700
Titre abrégé: J Environ Radioact
Pays: England
ID NLM: 8508119
Informations de publication
Date de publication:
Aug 2021
Aug 2021
Historique:
received:
20
11
2020
revised:
23
04
2021
accepted:
01
05
2021
pubmed:
15
5
2021
medline:
1
6
2021
entrez:
14
5
2021
Statut:
ppublish
Résumé
During the operation of high-energy proton accelerators, the air in the tunnel is activated with the production of radionuclides. For CSNS (China Spallation Neutron Source), the first pulsed neutron source in China for multidisciplinary research, an online air activation monitoring system was developed to evaluate the radiation safety of the staff and the public, which consisted of a NaI detector, Pb shielding, an MB container and a control system. With the monitoring system, gamma spectra of the activated air from controlled areas are measured, and the activity concentration and immersion dose rates of radionuclides in air are calculated and displayed in real time. The system has been in stable operation since February 2020, and results have been obtained for the evaluation of the radiation risk from activated air.
Identifiants
pubmed: 33989845
pii: S0265-931X(21)00114-4
doi: 10.1016/j.jenvrad.2021.106642
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
106642Informations de copyright
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