Non-linear simulations of the TCV Scrape-Off Layer

Non-linear simulations of the TCV Scrape-Off Layer

To investigate the mechanisms leading to the heat deposition onto the first wall in the Scrape-Off Layer (SOL), we perform dedicated numerical non-linear simulations of the SOL plasma dynamics of a TCV discharge using the GBS code. The simulated parallel heat flux profiles on the limiter agree quali...

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Main Authors: F. Nespoli, I. Furno, F.D. Halpern, B. Labit, J. Loizu, P. Ricci, F. Riva
Format: Article
Language:English
Published: Elsevier 2017-08-01
Series:Nuclear Materials and Energy
Online Access:http://www.sciencedirect.com/science/article/pii/S2352179116300758
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spelling doaj-9cfa039da4af40ff89d9a6ec4ab8e3842020-11-25T02:49:13ZengElsevierNuclear Materials and Energy2352-17912017-08-011212051208Non-linear simulations of the TCV Scrape-Off LayerF. Nespoli0I. Furno1F.D. Halpern2B. Labit3J. Loizu4P. Ricci5F. Riva6Corresponding author.; École Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne CH-1015, SwitzerlandÉcole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne CH-1015, SwitzerlandÉcole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne CH-1015, SwitzerlandÉcole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne CH-1015, SwitzerlandMax Planck-Institut fur Plasmaphysik, Greifswald D-17491, Germany; Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, NJ 08543, USAÉcole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne CH-1015, SwitzerlandÉcole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne CH-1015, SwitzerlandTo investigate the mechanisms leading to the heat deposition onto the first wall in the Scrape-Off Layer (SOL), we perform dedicated numerical non-linear simulations of the SOL plasma dynamics of a TCV discharge using the GBS code. The simulated parallel heat flux profiles on the limiter agree qualitatively with the experimental ones obtained by means of infrared thermography, showing a double scale length. Non-ambipolar currents are found to flow to the limiter, consistently with the experiments. The contribution of the latter to the total heat flux is discussed. The results of a second simulation identical to the first one but with 40 times higher resistivity are also discussed. Keywords: Plasma, Scrape-Off Layer, TCV, GBS simulations heat fluxhttp://www.sciencedirect.com/science/article/pii/S2352179116300758
collection DOAJ
language English
format Article
sources DOAJ
author F. Nespoli
I. Furno
F.D. Halpern
B. Labit
J. Loizu
P. Ricci
F. Riva
spellingShingle F. Nespoli
I. Furno
F.D. Halpern
B. Labit
J. Loizu
P. Ricci
F. Riva
Non-linear simulations of the TCV Scrape-Off Layer
Nuclear Materials and Energy
author_facet F. Nespoli
I. Furno
F.D. Halpern
B. Labit
J. Loizu
P. Ricci
F. Riva
author_sort F. Nespoli
title Non-linear simulations of the TCV Scrape-Off Layer
title_short Non-linear simulations of the TCV Scrape-Off Layer
title_full Non-linear simulations of the TCV Scrape-Off Layer
title_fullStr Non-linear simulations of the TCV Scrape-Off Layer
title_full_unstemmed Non-linear simulations of the TCV Scrape-Off Layer
title_sort non-linear simulations of the tcv scrape-off layer
publisher Elsevier
series Nuclear Materials and Energy
issn 2352-1791
publishDate 2017-08-01
description To investigate the mechanisms leading to the heat deposition onto the first wall in the Scrape-Off Layer (SOL), we perform dedicated numerical non-linear simulations of the SOL plasma dynamics of a TCV discharge using the GBS code. The simulated parallel heat flux profiles on the limiter agree qualitatively with the experimental ones obtained by means of infrared thermography, showing a double scale length. Non-ambipolar currents are found to flow to the limiter, consistently with the experiments. The contribution of the latter to the total heat flux is discussed. The results of a second simulation identical to the first one but with 40 times higher resistivity are also discussed. Keywords: Plasma, Scrape-Off Layer, TCV, GBS simulations heat flux
url http://www.sciencedirect.com/science/article/pii/S2352179116300758
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