Light impurity transport in JET ILW L-mode plasmas

JET Contributors

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

A series of experimental observations of light impurity profiles was carried out in JET (Joint European Torus) ITER-like wall (ILW) L-mode plasmas in order to investigate their transport mechanisms. These discharges feature the presence of 3He, Be, C, N, Ne, whose profiles measured by active Charge Exchange diagnostics are compared with quasi-linear and non-linear gyro-kinetic simulations. The peaking of 3He density follows the electron density peaking, Be and Ne are also peaked, while the density profiles of C and N are flat in the mid plasma region. Gyro-kinetic simulations predict peaked density profiles for all the light impurities studied and at all the radial positions considered, and fail predicting the flat or hollow profiles observed for C and N at mid radius in our cases.

Original languageEnglish
Article number036009
JournalNuclear Fusion
Volume58
Issue number3
DOIs
StatePublished - 18 Jan 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 EURATOM.

Funding

This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No.DE-AC02-05CH11231. A part of this work was carried out using the HELIOS supercomputer system at Computational Simulation Centre of International Fusion Energy Research Centre (IFERC-CSC), Aomori, Japan, under the Broader Approach collaboration between Euratom and Japan, implemented by Fusion for Energy and JAEA. The authors would like to thank Yann Camenen, Athina Kappatou and Marco Valisa for precious suggestions and discussions. The authors are grateful to D.R. Mikkelsen for assistance. This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No.DE– AC02–05CH11231. A part of this work was carried out using the HELIOS supercomputer system at Computational Simulation Centre of International Fusion Energy Research Centre (IFERCCSC), Aomori, Japan, under the Broader Approach collaboration between Euratom and Japan, implemented by Fusion for Energy and JAEA. We acknowledge the CINECA award under the ISCRA initiative, for the availability of high performance computing resources and support. 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. The views and opinions expressed herein do not necessarily reflect those of the European Commission.

FundersFunder number
Euratom research and training programme 2014–2018
U.S. Department of Energy– AC02–05CH11231
Office of Science
Horizon 2020 Framework Programme633053
Japan Atomic Energy Agency

    Keywords

    • JET
    • gyro-kinetic simulations
    • light impurities
    • turbulent transport

    Fingerprint

    Dive into the research topics of 'Light impurity transport in JET ILW L-mode plasmas'. Together they form a unique fingerprint.

    Cite this