Nuclear design of a shielded cabinet for electronics: The ITER radial neutron camera case study
Authors:
- F. Moro,
- R. Kantor
Abstract
The Radial Neutron Camera (RNC) is a diagnostic system located in ITER Equatorial Port #1 providing several spatial and time-resolved parameters for the fusion power estimation, plasma control and physics studies. The RNC measures the uncollided 14 MeV and 2.5 MeV neutrons from deuterium-tritium (DT) and deuterium-deuterium (DD) fusion reactions through an array of neutron flux detectors located in collimated Lines of Sight. Signals from RNC detectors (fission chambers, single Crystal Diamonds and scintillators) need preamplification because of their low amplitude. These preamplifiers have to be as close as possible to the detectors in order to minimize signal degradation and must be protected against fast and thermal neutrons, gamma radiation and electromagnetic fields. The solution adopted is to host the preamplifiers in a shielded cabinet located in a dedicated area of the Port Cell, behind the Bioshield Plug. The overall design of the cabinet must ensure the necessary magnetic, thermal and nuclear shielding and, at the same, satisfy weight and allocated volume constraints and maintain its structural integrity. The present paper describes the nuclear design of the shielded cabinet, performed by means of 3D particle transport calculations (MCNP), taking into account the radiation streaming through the Bioshield penetrations and the cross-talk effect from the neighboring Lower and Upper Ports. We present the assessment of its nuclear shielding performances and analyze the compliancy with the alert thresholds for commercial electronics in terms of neutron flux and cumulated ionizing dose.
- Record ID
- CUTec39b5286e474f60b8f05aad964575d4
- Publication categories
- ; ;
- Author
- Total number of authors
- 23
- Journal series
- Fusion Engineering and Design, ISSN 0920-3796, e-ISSN 1873-7196
- Issue year
- 2023
- Vol
- 191
- Pages
- [1-6]
- Article number
- 113542
- Other elements of collation
- rys.; schem.; tab.; wykr.; Bibliografia (na s.) - 6; Bibliografia (liczba pozycji) - 15; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 191
- Conference
- 32st Symposium on Fusion Technology (SOFT-32), 2022, 18-09-2022 - 23-09-2022, Dubrovnik, Chorwacja
- Keywords in English
- electronics, ITER, MCNP, neutron diagnostics, neutronis, radial neutron camera
- ASJC Classification
- ; ; ;
- DOI
- DOI:10.1016/j.fusengdes.2023.113542 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0920379623001266 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTec39b5286e474f60b8f05aad964575d4/
- URN
urn:pkr-prod:CUTec39b5286e474f60b8f05aad964575d4
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.