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A fast tool for ICRH + NBI modelling within the EU-IM framework

Part of: Focus on Fusion Invited Contributions from the 18th European Fusion Theory Conference

Published online by Cambridge University Press:  12 April 2021

Dirk Van Eester Open the ORCID record for Dirk Van Eester [Opens in a new window] ,
E.A. Lerche ,
Ph. Huynh ,
T. Johnson Open the ORCID record for T. Johnson [Opens in a new window] ,
JET contributors  and
EUROfusion-IM team
Dirk Van Eester*
Affiliation:
LPP-ERM/KMS, EUROfusion Consortium Member - Trilateral Euregio Cluster, Brussels, Belgium
E.A. Lerche
Affiliation:
LPP-ERM/KMS, EUROfusion Consortium Member - Trilateral Euregio Cluster, Brussels, Belgium
Ph. Huynh
Affiliation:
CEA, IRFM, F-13108Saint-Paul-lez-Durance, France
T. Johnson
Affiliation:
Dept. of Fusion Plasma Physics, School of Electrical Engineering and Computer Science, KTH, Stockholm, Sweden
JET contributors
Affiliation:
See the author list of E. Joffrin et al., Nucl. Fusion59 (2019) 112021
EUROfusion-IM team
Affiliation:
See http://www.euro-fusionscipub.org/eu-im
*
†Email address for correspondence: d.van.eester@fz-juelich.de
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Abstract

Most if not all tokamak heating scenarios involve multiple ion populations being heated simultaneously. To allow the simulation of various aspects of physics dynamics determining the characteristics of operational scenarios in a flexible way, speedy yet sufficiently accurate models are needed, and they should be connected to each other via a ‘backbone’. Under the umbrella of EUROfusion's Integrated Modelling efforts, such a structure is provided. The present paper focuses on one physics aspect: auxiliary heating. After solving the wave equation or beam source equation, this requires solving a set of coupled Fokker–Planck equations for the various populations involved. The adopted modules – enabling accounting for the Coulomb collisional interaction of several non-Maxwellian (minority, majority and beam) populations – are discussed and a practical example of their use is provided: the JET ‘baseline’ scenario heating a minority of ${}^3\textrm {He}$ ions in a balanced D$+$T mix heated by D and T neutral beams.

Keywords

plasma simulationfusion plasmaplasma heating
Type
Research Article
Information
Journal of Plasma Physics , Volume 87 , Issue 2 , April 2021 , 855870202
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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References

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