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@ARTICLE{Wauters:910639,
      author       = {Wauters, Tom and Matveev, D. and Douai, D. and Banks, J.
                      and Buckingham, R. and Carvalho, I. S. and de la Cal, E. and
                      Delabie, E. and Dittmar, T. and Gaspar, J. and Huber, A. and
                      Jepu, I. and Karhunen, J. and Knipe, S. and Maslov, M. and
                      Meigs, A. and Monakhov, I. and Neverov, V. S. and Noble, C.
                      and Papadopoulos, G. and Pawelec, E. and Romanelli, S. and
                      Shaw, A. and Sheikh, H. and Silburn, S. and Widdowson, A.
                      and Abreu, P. and Aleiferis, S. and Bernardo, J. and
                      Borodin, D. and Brezinsek, S. and Buermans, J. and Card, P.
                      and Carvalho, P. and Crombe, K. and Dalley, S. and Dittrich,
                      L. and Elsmore, C. and Groth, M. and Hacquin, S. and
                      Henriques, R. and Huber, V. and Jacquet, P. and Jiang, X.
                      and Jones, G. and Keeling, D. and Kinna, D. and Kirov, K.
                      and Kovari, M. and Kowalska-Strzeciwilk, E. and Kukushkin,
                      A. B. and Kumpulainen, H. and Litherland-Smith, E. and
                      Lomas, P. and Loarer, T. and Lowry, C. and Manzanares, A.
                      and Patel, A. and Peacock, A. and Petersson, P. and
                      Petrella, N. and Pitts, R. A. and Romazanov, J. and Rubel,
                      M. and Siren, P. and Smart, T. and Solano, E. R. and
                      Štancar, Ž and Varje, J. and Whitehead, A. and Wiesen, S.
                      and Zerbini, M. and Zlobinski, M.},
      title        = {{I}sotope removal experiment in {JET}-{ILW} in view of
                      {T}-removal after the 2nd {DT} campaign at {JET}},
      journal      = {Physica scripta},
      volume       = {97},
      number       = {4},
      issn         = {0031-8949},
      address      = {Stockholm},
      publisher    = {The Royal Swedish Academy of Sciences},
      reportid     = {FZJ-2022-04012},
      pages        = {044001 -},
      year         = {2022},
      abstract     = {A sequence of fuel recovery methods was tested in JET,
                      equipped with the ITER-like beryllium main chamber wall and
                      tungsten divertor, to reduce the plasma deuterium
                      concentration to less than $1\%$ in preparation for
                      operation with tritium. This was also a key activity with
                      regard to refining the clean-up strategy to be implemented
                      at the end of the 2nd DT campaign in JET (DTE2) and to
                      assess the tools that are envisaged to mitigate the tritium
                      inventory build-up in ITER. The sequence began with 4 days
                      of main chamber baking at 320 °C, followed by a further 4
                      days in which Ion Cyclotron Wall Conditioning (ICWC) and
                      Glow Discharge Conditioning (GDC) were applied with hydrogen
                      fuelling, still at 320 °C, followed by more ICWC while the
                      vessel cooled gradually from 320 °C to 225 °C on the 4th
                      day. While baking alone is very efficient at recovering fuel
                      from the main chamber, the ICWC and GDC sessions at 320 °C
                      still removed slightly higher amounts of fuel than found
                      previously in isotopic changeover experiments at 200 °C in
                      JET. Finally, GDC and ICWC are found to have similar removal
                      efficiency per unit of discharge energy. The baking week
                      with ICWC and GDC was followed by plasma discharges to
                      remove deposited fuel from the divertor. Raising the inner
                      divertor strike point up to the uppermost accessible point
                      allowed local heating of the surfaces to at least 800 °C
                      for the duration of this discharge configuration (typically
                      18 s), according to infra-red thermography measurements. In
                      laboratory thermal desorption measurements, maintaining this
                      temperature level for several minutes depletes thick
                      co-deposit samples of fuel. The fuel removal by 14 diverted
                      plasma discharges is analysed, of which 9, for 160 s in
                      total, with raised inner strike point. The initial D content
                      in these discharges started at the low value of $3\%–5\%,$
                      due to the preceding baking and conditioning sequence, and
                      reduced further to $1\%,$ depending on the applied
                      configuration, thus meeting the experimental target.},
      cin          = {IEK-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
      pid          = {G:(DE-HGF)POF4-134},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000767895500001},
      doi          = {10.1088/1402-4896/ac5856},
      url          = {https://juser.fz-juelich.de/record/910639},
}