EDGE2D-EIRENE simulations of the impact of poloidal flux expansion on the radiative divertor performance in JET

B. Viola; G. Calabró; Aaro E. Järvinen; I. Lupelli; F. Maviglia; S. Wiesen; M. Wischmeier; J. E.T. Contributors

doi:10.1016/j.nme.2017.07.004

EDGE2D-EIRENE simulations of the impact of poloidal flux expansion on the radiative divertor performance in JET

B. Viola^*
, G. Calabró
, Aaro E. Järvinen
, I. Lupelli
, F. Maviglia
, S. Wiesen
, M. Wischmeier
, J. E.T. Contributors

^*Corresponding author for this work

Not published at VTT

National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA)
Lawrence Livermore National Laboratory
Culham Science Centre
University of Naples Federico II
Forschungszentrum Jülich GmbH (FZJ)
Max-Planck-Institut für Plasmaphysik (IPP)

Research output: Contribution to journal › Article › Scientific › peer-review

3 Citations (Scopus)

Abstract

In the past at JET, with the MkI divertor, a systematic study of the influence of X-point height and poloidal flux expansion has been conducted [1,2] showing minor differences in the radiation distribution, whereas in [3] experiment and simulations have shown enhancement of detachment as the flux expansion was increased. More recently at JET, equipped with the ITER-like wall (ILW), radiative seeded scenarios have been studied and a maximum radiation fraction 75% has been achieved. EDGE2D-EIRENE [4–6] simulations [7,8] have already shown that the divertor heat fluxes can be reduced with N2 injection, qualitatively consistent with experimental observations [9], by adjusting the impurity injection rate to reproduce the measured divertor radiation. In this paper we will present edge predictive simulations on the assessment of effects of poloidal flux expansion and recycling on radiation distribution and X-point peaking on JET-ILW nitrogen seeded plasmas.

Original language	English
Pages (from-to)	786-790
Journal	Nuclear Materials and Energy
Volume	12
DOIs	https://doi.org/10.1016/j.nme.2017.07.004
Publication status	Published - Aug 2017
MoE publication type	A1 Journal article-refereed

Funding

This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 under grant agreement no. 633053.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

EDGE2D
EIRENE
Impurity seeding
JET
Nitrogen
Power exhaust
Radiation

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10.1016/j.nme.2017.07.004

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title = "EDGE2D-EIRENE simulations of the impact of poloidal flux expansion on the radiative divertor performance in JET",

abstract = "In the past at JET, with the MkI divertor, a systematic study of the influence of X-point height and poloidal flux expansion has been conducted [1,2] showing minor differences in the radiation distribution, whereas in [3] experiment and simulations have shown enhancement of detachment as the flux expansion was increased. More recently at JET, equipped with the ITER-like wall (ILW), radiative seeded scenarios have been studied and a maximum radiation fraction 75\% has been achieved. EDGE2D-EIRENE [4{\textendash}6] simulations [7,8] have already shown that the divertor heat fluxes can be reduced with N2 injection, qualitatively consistent with experimental observations [9], by adjusting the impurity injection rate to reproduce the measured divertor radiation. In this paper we will present edge predictive simulations on the assessment of effects of poloidal flux expansion and recycling on radiation distribution and X-point peaking on JET-ILW nitrogen seeded plasmas.",

keywords = "EDGE2D, EIRENE, Impurity seeding, JET, Nitrogen, Power exhaust, Radiation",

author = "B. Viola and G. Calabr{\'o} and J{\"a}rvinen, \{Aaro E.\} and I. Lupelli and F. Maviglia and S. Wiesen and M. Wischmeier and Contributors, \{J. E.T.\}",

year = "2017",

month = aug,

doi = "10.1016/j.nme.2017.07.004",

language = "English",

volume = "12",

pages = "786--790",

journal = "Nuclear Materials and Energy",

issn = "2352-1791",

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TY - JOUR

T1 - EDGE2D-EIRENE simulations of the impact of poloidal flux expansion on the radiative divertor performance in JET

AU - Viola, B.

AU - Calabró, G.

AU - Järvinen, Aaro E.

AU - Lupelli, I.

AU - Maviglia, F.

AU - Wiesen, S.

AU - Wischmeier, M.

AU - Contributors, J. E.T.

PY - 2017/8

Y1 - 2017/8

N2 - In the past at JET, with the MkI divertor, a systematic study of the influence of X-point height and poloidal flux expansion has been conducted [1,2] showing minor differences in the radiation distribution, whereas in [3] experiment and simulations have shown enhancement of detachment as the flux expansion was increased. More recently at JET, equipped with the ITER-like wall (ILW), radiative seeded scenarios have been studied and a maximum radiation fraction 75% has been achieved. EDGE2D-EIRENE [4–6] simulations [7,8] have already shown that the divertor heat fluxes can be reduced with N2 injection, qualitatively consistent with experimental observations [9], by adjusting the impurity injection rate to reproduce the measured divertor radiation. In this paper we will present edge predictive simulations on the assessment of effects of poloidal flux expansion and recycling on radiation distribution and X-point peaking on JET-ILW nitrogen seeded plasmas.

AB - In the past at JET, with the MkI divertor, a systematic study of the influence of X-point height and poloidal flux expansion has been conducted [1,2] showing minor differences in the radiation distribution, whereas in [3] experiment and simulations have shown enhancement of detachment as the flux expansion was increased. More recently at JET, equipped with the ITER-like wall (ILW), radiative seeded scenarios have been studied and a maximum radiation fraction 75% has been achieved. EDGE2D-EIRENE [4–6] simulations [7,8] have already shown that the divertor heat fluxes can be reduced with N2 injection, qualitatively consistent with experimental observations [9], by adjusting the impurity injection rate to reproduce the measured divertor radiation. In this paper we will present edge predictive simulations on the assessment of effects of poloidal flux expansion and recycling on radiation distribution and X-point peaking on JET-ILW nitrogen seeded plasmas.

KW - EDGE2D

KW - EIRENE

KW - Impurity seeding

KW - JET

KW - Nitrogen

KW - Power exhaust

KW - Radiation

UR - https://www.scopus.com/pages/publications/85024091730

U2 - 10.1016/j.nme.2017.07.004

DO - 10.1016/j.nme.2017.07.004

M3 - Article

AN - SCOPUS:85024091730

SN - 2352-1791

VL - 12

SP - 786

EP - 790

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

ER -

EDGE2D-EIRENE simulations of the impact of poloidal flux expansion on the radiative divertor performance in JET

Abstract

Funding

UN SDGs

Keywords

Access to Document

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