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research article

Scoping the characteristics and benefits of a connected double-null configuration for power exhaust in EU-DEMO

Aho-Mantila, L.
•
Subba, F.
•
Coster, D. P.
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March 1, 2021
Nuclear Materials and Energy

A double-null configuration is being considered for the EU-DEMO, due to its potential benefits for power exhaust arising from the use of two active divertors and magnetically disconnected low- and high-field sides. Using systematic parameter scans in fluid simulations, we have investigated the divertor power exhaust in the EUDEMO in a connected double-null configuration, and compared the edge plasma properties to those obtained in a single-null configuration under detached conditions anticipated for reactor operation. Neglecting drift effects and kinetic behaviour of the neutrals, no clear benefits of the double-null configuration could yet be identified for the radiation pattern and power mitigation on open field lines. Future work should address the aforementioned physics as well as the effect of the additional X-point on core radiation.

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Type
research article
DOI
10.1016/j.nme.2020.100886
Web of Science ID

WOS:000628782500021

Author(s)
Aho-Mantila, L.
Subba, F.
Coster, D. P.
Xiang, L.
Militello, F.
Lunt, T.
Moulton, D.
Reimerdes, H.  
Wensing, M.
Wischmeier, M.  
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Date Issued

2021-03-01

Publisher

Elsevier

Published in
Nuclear Materials and Energy
Volume

26

Article Number

100886

Subjects

Nuclear Science & Technology

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demo

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power exhaust

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solps-iter

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double-null

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divertor physics

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operating space

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SPC  
Available on Infoscience
April 24, 2021
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/177626
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