Plasma turbulence in the scrape-off layer of the ISTTOK tokamak
The properties of plasma turbulence in a poloidally limited scrape-off layer (SOL) are addressed, with focus on ISTTOK, a large aspect ratio tokamak with a circular cross section. Theoretical investigations based on the drift-reduced Braginskii equations are carried out through linear calculations a...
| Main Authors: | , , , , |
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| Format: | Article |
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American Institute of Physics (AIP)
2018
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| Online Access: | http://hdl.handle.net/1721.1/117069 https://orcid.org/0000-0001-9755-6563 |
| _version_ | 1826213724896100352 |
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| author | Jorge, Rogério Ricci, Paolo Halpern, Federico D. Silva, Carlos Gomes Loureiro, Nuno F |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center Jorge, Rogério Ricci, Paolo Halpern, Federico D. Silva, Carlos Gomes Loureiro, Nuno F |
| author_sort | Jorge, Rogério |
| collection | MIT |
| description | The properties of plasma turbulence in a poloidally limited scrape-off layer (SOL) are addressed, with focus on ISTTOK, a large aspect ratio tokamak with a circular cross section. Theoretical investigations based on the drift-reduced Braginskii equations are carried out through linear calculations and non-linear simulations, in two-and three-dimensional geometries. The linear instabilities driving turbulence and the mechanisms that set the amplitude of turbulence as well as the SOL width are identified. A clear asymmetry is shown to exist between the low-field and the high-field sides of the machine. While the comparison between experimental measurements and simulation results shows good agreement in the far SOL, large intermittent events in the near SOL, detected in the experiments, are not captured by the simulations. |
| first_indexed | 2024-09-23T15:53:47Z |
| format | Article |
| id | mit-1721.1/117069 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:53:47Z |
| publishDate | 2018 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/1170692022-09-29T16:55:19Z Plasma turbulence in the scrape-off layer of the ISTTOK tokamak Jorge, Rogério Ricci, Paolo Halpern, Federico D. Silva, Carlos Gomes Loureiro, Nuno F Massachusetts Institute of Technology. Plasma Science and Fusion Center Gomes Loureiro, Nuno F The properties of plasma turbulence in a poloidally limited scrape-off layer (SOL) are addressed, with focus on ISTTOK, a large aspect ratio tokamak with a circular cross section. Theoretical investigations based on the drift-reduced Braginskii equations are carried out through linear calculations and non-linear simulations, in two-and three-dimensional geometries. The linear instabilities driving turbulence and the mechanisms that set the amplitude of turbulence as well as the SOL width are identified. A clear asymmetry is shown to exist between the low-field and the high-field sides of the machine. While the comparison between experimental measurements and simulation results shows good agreement in the far SOL, large intermittent events in the near SOL, detected in the experiments, are not captured by the simulations. United States. Department of Energy (Grant DE-FG02-91ER54109) 2018-07-24T15:00:22Z 2018-07-24T15:00:22Z 2016-10 2016-06 2018-07-17T15:08:20Z Article http://purl.org/eprint/type/JournalArticle 1070-664X 1089-7674 http://hdl.handle.net/1721.1/117069 Jorge, Rogério et al. “Plasma Turbulence in the Scrape-Off Layer of the ISTTOK Tokamak.” Physics of Plasmas 23, 10 (October 2016): 102511 © 2016 American Institute of Physics https://orcid.org/0000-0001-9755-6563 http://dx.doi.org/10.1063/1.4964783 Physics of Plasmas Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Institute of Physics (AIP) arXiv |
| spellingShingle | Jorge, Rogério Ricci, Paolo Halpern, Federico D. Silva, Carlos Gomes Loureiro, Nuno F Plasma turbulence in the scrape-off layer of the ISTTOK tokamak |
| title | Plasma turbulence in the scrape-off layer of the ISTTOK tokamak |
| title_full | Plasma turbulence in the scrape-off layer of the ISTTOK tokamak |
| title_fullStr | Plasma turbulence in the scrape-off layer of the ISTTOK tokamak |
| title_full_unstemmed | Plasma turbulence in the scrape-off layer of the ISTTOK tokamak |
| title_short | Plasma turbulence in the scrape-off layer of the ISTTOK tokamak |
| title_sort | plasma turbulence in the scrape off layer of the isttok tokamak |
| url | http://hdl.handle.net/1721.1/117069 https://orcid.org/0000-0001-9755-6563 |
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