Contrasting H-mode behaviour with deuterium fuelling and nitrogen seeding in the all-carbon and metallic versions of JET

  title={Contrasting H-mode behaviour with deuterium fuelling and nitrogen seeding in the all-carbon and metallic versions of JET},
  author={Geoff Maddison and Carine Giroud and B. Alper and Gilles Arnoux and Itziar Balboa and M N A Beurskens and Alexandru Boboc and Sebastijan Brezinsek and Mathias Brix and M. Clever and Rui Coelho and Jan Willem Coenen and I. H. Coffey and P.C. da Silva Aresta Belo and St{\'e}phane Devaux and P Devynck and Thomas Eich and Robert Felton and Joanne Flanagan and Lorenzo Frassinetti and Luca Garzotti and M. Groth and S. Jachmich and A. E. J{\"a}rvinen and Emmanuel Joffrin and M. A. H. Kempenaars and Uron Kruezi and K D Lawson and Michael Lehnen and Michala Leyland and Y. Liu and Peter J. Lomas and C. G. Lowry and Stefan Marsen and Guy F. Matthews and Gerald Kent McCormick and A G Meigs and A. W. Morris and Rudolf Neu and I. M. Ferreira Nunes and Martin Oberkofler and F. G. Rimini and S. Saarelma and B. Sieglin and A. C. C. Sips and Antoine Sirinelli and M. F. Stamp and Gerard van Rooij and David J Ward and M. Wischmeier},
  journal={Nuclear Fusion},
The former all-carbon wall on JET has been replaced with beryllium in the main torus and tungsten in the divertor to mimic the surface materials envisaged for ITER. Comparisons are presented between type I H-mode characteristics in each design by examining respective scans over deuterium fuelling and impurity seeding, required to ameliorate exhaust loads both in JET at full capability and in ITER. Attention is focused upon a common high-triangularity, single-null divertor configuration at 2.5… 
32 Citations

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