Abstract
Extensive neutron transport calculations have been performed to determine the neutron spectrum at a number of points throughout the JET torus hall. The model has been bench-marked against a set of foil activation measurements which were activated during an experimental campaign with deuterium/tritium plasmas. The model can predict the neutron activation of the foils on the torus hall walls to within a factor of three for reactions with little sensitivity to thermal neutrons. The use of scandium foils with and without a cadmium thermal neutron absorber was a useful monitor of the thermal neutron flux. Conclusions regarding the usefulness of other foils for benchmarking the calculations are also given.
Original language | English |
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Pages (from-to) | 967-971 |
Number of pages | 5 |
Journal | Fusion Engineering and Design |
Volume | 58-59 |
DOIs | |
State | Published - Nov 2001 |
Externally published | Yes |
Funding
Thanks are due to UKAEA SAFER for providing the data for the neutronics model and for establishing contracts on the activation foil packs. The foil pack analysis was carried out under contract by AEA Technology. This work was funded jointly by the UK Department of Trade and Industry and Euratom.
Keywords
- JET
- Thermal neutron
- Tokamak