Modelling of high-field-side high-density region with the nonlinear MHD code JOREK with kinetic neutrals

JOREK team, S.Q. Korving, G.T.A. Huijsmans, J.-S. Park

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Abstract

In this contribution, we have presented a benchmark of JOREK-without drifts-with kinetic neutrals against SOLPS-ITER (without drifts) and the development of the HFSHD-region in JOREK simulations with kinetic neutrals for early ITER operation (the PFPO-1 phase). Ramping up the fueling rate (in the divertor) decreases gradually the heat flux towards the divertor target. Once the ionisation front comes off the wall, cross field transport moves neutrals and plasma across the separatrix. Building up the (off-separatrix) density in the high field side. Around a critical upstream density, the plasma undergoes a sharp transition to form the HFSHD-region carried by the formation of an →−→−B vortex. This →−→−B vortex increases in strength and displaces the inner target ion flux upwards. Switching off →−→−B drifts strongly reduces cross-field transport and thus does not allow for the density buildup at the high-field-side. With more accurate divertor solution, JOREK can now better study the consequences in the divertor as a result of MHD instabilities, such as ELMs.

Original languageEnglish
Title of host publication48th EPS Conference on Plasma Physics 27 June - 1 July 2022
PublisherEuropean Physical Society (EPS)
ChapterO3.105
Number of pages4
ISBN (Electronic)979-10-96389-16-2
Publication statusPublished - 2022
Event48th European Physical Society Conference on Plasma Physics, EPS 2022 - Virtual/Online, Maastricht, Netherlands
Duration: 27 Jun 20221 Jul 2022
Conference number: 48
https://www.epsplasma2022.eu/

Publication series

NameEurophysics conference abstracts
Volume46A

Conference

Conference48th European Physical Society Conference on Plasma Physics, EPS 2022
Abbreviated titleEPS 2022
Country/TerritoryNetherlands
CityMaastricht
Period27/06/221/07/22
Internet address

Bibliographical note

Funding Information:
This work is part of the research programme of the Foundation for Nederlandse Wetenschappelijk Onderzoek Instituten (NWO-I), which is part of the NWO and has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 — EUROfusion) and by the ITER Organization under Implementing Agreement 43-2174 with the Eindhoven University of Technology. The views and opinions expressed herein do not necessarily reflect those of NWO, the European Commission nor the ITER Organization.

Funding

This work is part of the research programme of the Foundation for Nederlandse Wetenschappelijk Onderzoek Instituten (NWO-I), which is part of the NWO and has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 — EUROfusion) and by the ITER Organization under Implementing Agreement 43-2174 with the Eindhoven University of Technology. The views and opinions expressed herein do not necessarily reflect those of NWO, the European Commission nor the ITER Organization.

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