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Design of the DEMO Fusion Reactor Following ITER
Runs of the NSTAB nonlinear stability code show there are many three-dimensional (3D) solutions of the advanced tokamak problem subject to axially symmetric boundary conditions. These numerical simulations based on mathematical equations in conservation form predict that the ITER international tokam...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4651607/ https://www.ncbi.nlm.nih.gov/pubmed/27504224 http://dx.doi.org/10.6028/jres.114.016 |
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author | Garabedian, Paul R. McFadden, Geoffrey B. |
author_facet | Garabedian, Paul R. McFadden, Geoffrey B. |
author_sort | Garabedian, Paul R. |
collection | PubMed |
description | Runs of the NSTAB nonlinear stability code show there are many three-dimensional (3D) solutions of the advanced tokamak problem subject to axially symmetric boundary conditions. These numerical simulations based on mathematical equations in conservation form predict that the ITER international tokamak project will encounter persistent disruptions and edge localized mode (ELMS) crashes. Test particle runs of the TRAN transport code suggest that for quasineutrality to prevail in tokamaks a certain minimum level of 3D asymmetry of the magnetic spectrum is required which is comparable to that found in quasiaxially symmetric (QAS) stellarators. The computational theory suggests that a QAS stellarator with two field periods and proportions like those of ITER is a good candidate for a fusion reactor. For a demonstration reactor (DEMO) we seek an experiment that combines the best features of ITER, with a system of QAS coils providing external rotational transform, which is a measure of the poloidal field. We have discovered a configuration with unusually good quasisymmetry that is ideal for this task. |
format | Online Article Text |
id | pubmed-4651607 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology |
record_format | MEDLINE/PubMed |
spelling | pubmed-46516072016-08-08 Design of the DEMO Fusion Reactor Following ITER Garabedian, Paul R. McFadden, Geoffrey B. J Res Natl Inst Stand Technol Article Runs of the NSTAB nonlinear stability code show there are many three-dimensional (3D) solutions of the advanced tokamak problem subject to axially symmetric boundary conditions. These numerical simulations based on mathematical equations in conservation form predict that the ITER international tokamak project will encounter persistent disruptions and edge localized mode (ELMS) crashes. Test particle runs of the TRAN transport code suggest that for quasineutrality to prevail in tokamaks a certain minimum level of 3D asymmetry of the magnetic spectrum is required which is comparable to that found in quasiaxially symmetric (QAS) stellarators. The computational theory suggests that a QAS stellarator with two field periods and proportions like those of ITER is a good candidate for a fusion reactor. For a demonstration reactor (DEMO) we seek an experiment that combines the best features of ITER, with a system of QAS coils providing external rotational transform, which is a measure of the poloidal field. We have discovered a configuration with unusually good quasisymmetry that is ideal for this task. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2009 2009-08-01 /pmc/articles/PMC4651607/ /pubmed/27504224 http://dx.doi.org/10.6028/jres.114.016 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright. |
spellingShingle | Article Garabedian, Paul R. McFadden, Geoffrey B. Design of the DEMO Fusion Reactor Following ITER |
title | Design of the DEMO Fusion Reactor Following ITER |
title_full | Design of the DEMO Fusion Reactor Following ITER |
title_fullStr | Design of the DEMO Fusion Reactor Following ITER |
title_full_unstemmed | Design of the DEMO Fusion Reactor Following ITER |
title_short | Design of the DEMO Fusion Reactor Following ITER |
title_sort | design of the demo fusion reactor following iter |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4651607/ https://www.ncbi.nlm.nih.gov/pubmed/27504224 http://dx.doi.org/10.6028/jres.114.016 |
work_keys_str_mv | AT garabedianpaulr designofthedemofusionreactorfollowingiter AT mcfaddengeoffreyb designofthedemofusionreactorfollowingiter |