This title appears in the Scientific Report :
2017
Please use the identifier:
http://dx.doi.org/10.1002/ctpp.201610015 in citations.
Please use the identifier: http://hdl.handle.net/2128/14960 in citations.
Effect of PFC Recycling Conditions on JET Pedestal Density
Effect of PFC Recycling Conditions on JET Pedestal Density
There is experimental evidence that the pedestal dynamics in type-I ELMy H-mode discharges is significantly affected by a change in the recycling conditions at the tungsten plasma-facing components (W-PFCs) after an ELM event. The integrated code JINTRAC has been employed to assess the impact of rec...
Saved in:
Personal Name(s): | Wiesen, S. (Corresponding author) |
---|---|
Brezinsek, S. / Harting, D. / Dittmar, T. / de la Luna, E. / Matveev, D. / Schmid, K. / JET contributors | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Contributions to plasma physics, 56 (2016) 6-8, S. 754 - 759 |
Imprint: |
Weinheim
Wiley-VCH
2016
|
DOI: |
10.1002/ctpp.201610015 |
Document Type: |
Journal Article |
Research Program: |
Plasma-Wall-Interaction |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/14960 in citations.
There is experimental evidence that the pedestal dynamics in type-I ELMy H-mode discharges is significantly affected by a change in the recycling conditions at the tungsten plasma-facing components (W-PFCs) after an ELM event. The integrated code JINTRAC has been employed to assess the impact of recycling conditions during type-I ELMs in JET ITER-like wall H-mode discharges. By employing a heuristic approach, a model to mimic the physical processes leading to formation and release (i.e. outgassing) of finite near-surface fuel reservoirs in W-PFCs has been implemented into the EDGE2D-EIRENE plasma-wall interaction code being part of JINTRAC. As main result it is shown, that a delay in the density pedestal build-up after an ELM event can be provoked by reduced recycling induced by depleted W-PFC particle near-surface reservoirs. However the pedestal temperature evolution is barely affected by the change in recycling parameters suggesting that the presented model is incomplete. |