Overview of tritium retention in divertor tiles and dust particles from the JET tokamak with the ITER-like wall

Authors:
Open Access
Publisher website
Google Scholar
Abstract
Divertor tiles after Joint European Torus-ITER like wall (JET-ILW) campaigns and dust collected after JET-C and JET-ILW operation were examined by a set of complementary techniques (full combustion and radiography) to determine the total, specific and areal tritium activities, poloidal tritium distribution in the divertor and the presence of that isotope in individual dust particles. In the divertor tiles, the majority of tritium is detected in the surface region and, the areal activities in the ILW divertor are in the 0.5–12 kBq cm−2 range. The activity in the ILW dust is associated mainly with the presence of carbon particles being a legacy from the JET-C operation. The total tritium activities show significant differences between the JET operation with ILW and the earlier phase with the carbon wall (JET-C) indicating that tritium retention has been significantly decreased in the operation with ILW.
Funding Information
  • the Broader Approach DEMO R&D Activity
  • he work has been supported by the Swedish Research Council (Grant 2015 - 04844 and 2016 - 05380)
  • the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (No 101052200 - EUROfusion)
  • the UK EPSRC Energy Programme (grant number EP/W006839/1)

This publication has 26 references indexed in Scilit: