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Neutronics analysis for integration of ITER diagnostics port EP10

Research output: Contribution to journalJournal articlepeer-review

E-pub ahead of print
  • Bethany Colling
  • Tim Eade
  • Malcolm John Joyce
  • Raul Pampin
  • Fabien Seyvet
  • Andrew Turner
  • Victor Udintsev
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<mark>Journal publication date</mark>28/01/2016
<mark>Journal</mark>Fusion Engineering and Design
Publication StatusE-pub ahead of print
Early online date28/01/16
<mark>Original language</mark>English

Abstract

Shutdown dose rate calculations have been performed on an integrated ITER C-lite neutronics model with equatorial port 10. A ‘fully shielded’ configuration, optimised for a given set of diagnostic designs (i.e. shielding in all available space within the port plug drawers), results in a shutdown dose rate in the port interspace, from the activation of materials comprising equatorial port 10, in excess of 2000 μSv/h. Achieving dose rates of 100 μSv/h or less, as required in areas where hands-on maintenance can be performed, in the port interspace region will be challenging. A combination of methods will need to be implemented, such as reducing mass and/or the use of reduced activation steel in the port interspace, optimisation of the diagnostic designs and shielding of the port interspace floor. Further analysis is required to test these options and the ongoing design optimisation of the EP10 diagnostic systems.