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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...

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Detalles Bibliográficos
Autores principales: Garabedian, Paul R., McFadden, Geoffrey B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2009
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.
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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
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