Non-linear magnetohydrodynamic simulations of pellet triggered edgelocalized modes in JET

JOREK team, JET Contributors, S. Futatani (Corresponding author), S. Pamela, L. Garzotti, G. T.A. Huijsmans, M. Hoelzl, D. Frigione, M. Lennholm

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)

Abstract

Non-linear magnetohydrodynamic simulations of pellet-triggered edge-localized modes (ELMs) in JET plasma have been carried out with the JOREK code. The pellet particle fuelling efficiency and the power flux at the divertor target during the pellet-triggered ELM have been studied. The pellet injection in unstable plasma delivers the particle fuelling but the pellet fuelling rate is smaller than the rate of particle loss during the pellet triggered ELM. The JOREK simulations estimate the power flux at the divertor target and found good agreement with the experimental observation. The energy deposition of the pellet triggered ELM shows a toroidally asymmetric profile. However, and due to this toroidal asymmetry, this effect cannot be captured by the existing layout of the divertor infra-red (IR) cameras available in JET. This work highlights the benefit of having a larger number of IR cameras to analyse the heat flux for the experiments which are assumed to be toroidally asymmetric, such as the pellet and/or gas injection experiments.

Original languageEnglish
Article number026003
Number of pages17
JournalNuclear Fusion
Volume60
Issue number2
DOIs
Publication statusPublished - 2020

Funding

The work of S.F. is supported by a Ramón y Cajal grant from the Spanish Ministry of Economy and Competitiveness (RYC-2014-15206). 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 and 2019-2020 under Grant Agreement No. 633053. The views and opinions expressed herein do not necessarily reflect either those of the European Commission. The author thankfully acknowledges the computer resources of PRACE (Partnership for Advanced Computing in Europe) and RES (Spanish Supercomputing Network) at MareNostrum and the technical support provided by Barcelona Supercomputing Center, and the support from Marconi-Fusion, the High Performance Computer at the CINECA headquarters in Bologna (Italy) for its provision of supercomputer resources.

FundersFunder number
CINECA headquarters in Bologna
Horizon 2020 Framework Programme
H2020 Euratom633053
Partnership for Advanced Computing in Europe AISBL
Ministerio de Economía y CompetitividadRYC-2014-15206
Barcelona Supercomputing Center

    Keywords

    • ELM
    • JET
    • JOREK
    • MHD
    • Pellet
    • Simulations

    Fingerprint

    Dive into the research topics of 'Non-linear magnetohydrodynamic simulations of pellet triggered edgelocalized modes in JET'. Together they form a unique fingerprint.

    Cite this