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

the JOREK team

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

the JOREK team

Research output: Contribution to conference › Paper › peer-review

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 ^→−E×^→−B vortex. This ^→−E×^→−B vortex increases in strength and displaces the inner target ion flux upwards. Switching off ^→−E×^→−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 language	English
State	Published - 2022
Externally published	Yes
Event	48th European Physical Society Conference on Plasma Physics, EPS 2022 - Virtual, Online Duration: Jun 27 2022 → Jul 1 2022

Conference

Conference	48th European Physical Society Conference on Plasma Physics, EPS 2022
City	Virtual, Online
Period	06/27/22 → 07/1/22

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.

Funders	Funder number
Foundation for Nederlandse Wetenschappelijk Onderzoek Instituten
NWO-I
Instituto Tecnológico y de Energías Renovables	43-2174
European Commission	101052200 — EUROfusion
Technische Universiteit Eindhoven
Nederlandse Organisatie voor Wetenschappelijk Onderzoek

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

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

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 →−E×→−B vortex. This →−E×→−B vortex increases in strength and displaces the inner target ion flux upwards. Switching off →−E×→−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.",

author = "{the JOREK team} and Korving, {S. Q.} and Huijsmans, {G. T.A.} and Park, {J. S.}",

note = "Publisher Copyright: {\textcopyright} 2022 48th EPS Conference on Plasma Physics, EPS 2022. All rights reserved.; 48th European Physical Society Conference on Plasma Physics, EPS 2022 ; Conference date: 27-06-2022 Through 01-07-2022",

year = "2022",

language = "English",

}

TY - CONF

T1 - Modelling of high-field-side high-density region with the nonlinear MHD code JOREK with kinetic neutrals

AU - the JOREK team

AU - Korving, S. Q.

AU - Huijsmans, G. T.A.

AU - Park, J. S.

PY - 2022

Y1 - 2022

N2 - 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 →−E×→−B vortex. This →−E×→−B vortex increases in strength and displaces the inner target ion flux upwards. Switching off →−E×→−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.

AB - 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 →−E×→−B vortex. This →−E×→−B vortex increases in strength and displaces the inner target ion flux upwards. Switching off →−E×→−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.

UR - http://www.scopus.com/inward/record.url?scp=85145769175&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85145769175

T2 - 48th European Physical Society Conference on Plasma Physics, EPS 2022

Y2 - 27 June 2022 through 1 July 2022

ER -

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

Abstract

Conference

Funding

UN SDGs

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