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Evaluation of neutron dose rates at the TCV tokamak facility
ID Fortuna, Mark (Author), ID Žohar, Andrej (Author), ID Snoj, Luka (Author), et al.

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Abstract
A detailed MCNP neutronics model of the building housing the TCV tokamak has been developed. Predicted dose rates have been compared to neutron dose measurements at 12 locations in the building obtained during neutral beam injection into TCV plasmas. This work was motivated both by the necessity to understand neutron transport in a complex environment and to provide an adequate reference model of the building to which additional shielding can be added. The additional shielding is required because of an expected 5-10 fold increase of neutron doses by the addition of a second neutral beam source. The neutron source was estimated using the TRANSP code. Starting from a simple model, which left out or simplified many important structures, the model was iteratively refined. The discrepancies between the predicted and measured doses decreased significantly, down to less than a factor 2 for most of the locations calculated by the most detailed model. A factor 2 is believed to be within the combined errors resulting from uncertainties in the neutron source model, the detector calibration and the uncertainties stemming from the model itself.

Language:English
Keywords:tokamak, neutron transport, shielding TCV, experimental validation, dose rate, neutron, MCNP
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FMF - Faculty of Mathematics and Physics
Publication status:Published
Publication version:Version of Record
Year:2023
Number of pages:9 str.
Numbering:Vol. 191, art. 113562
PID:20.500.12556/RUL-148313-d8f3a481-6522-071f-f8f5-805bc0fbc9f1 This link opens in a new window
UDC:539.1
ISSN on article:1873-7196
DOI:10.1016/j.fusengdes.2023.113562 This link opens in a new window
COBISS.SI-ID:143415299 This link opens in a new window
Publication date in RUL:11.08.2023
Views:592
Downloads:44
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Record is a part of a journal

Title:Fusion engineering and design
Publisher:Elsevier
ISSN:1873-7196
COBISS.SI-ID:23146245 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Language:Slovenian
Keywords:tokamak, transport nevtronov, ščitenje TCV, ekserimentalna validacija, hitrost doze, nevtroni

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0073
Name:Reaktorska fizika

Funder:ARRS - Slovenian Research Agency
Project number:P2-0405
Name:Fuzijske tehnologije

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