MHD Equilibrium and Kink Stability in Damavand Tokamak
Magnetohydrodynamic (MHD) equilibrium is vulnerable to numerous destabilizing mechanisms. Instabilities introduce distortions to the plasma magnetic surfaces and its boundaries, their driving force being the radial gradient of plasma toroidal current density. For certain modal numbers, internal kink...
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| Veröffentlicht in: | Journal of fusion energy 2009-09, Vol.28 (3), p.282-289 |
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| creator | Dini, Fatemeh Khorasani, Sina |
| description | Magnetohydrodynamic (MHD) equilibrium is vulnerable to numerous destabilizing mechanisms. Instabilities introduce distortions to the plasma magnetic surfaces and its boundaries, their driving force being the radial gradient of plasma toroidal current density. For certain modal numbers, internal kink modes may develop, and their study is feasible according to the energy principle, in which the change in total potential energy due to the disturbance is evaluated. In this article, we present a totally new analysis of MHD equilibrium and stability, and apply it to Damavand tokamak which has a large aspect ratio. For this purpose, we combine perturbation and Green’s function methods to solve for the equilibrium configuration. At this stage, plasma profiles are found explicitly in terms of Bessel functions, and we present a simple expression for estimation of total toroidal plasma current. Then the rest of plasma profiles, including poloidal magnetic flux, safety factor, and toroidal current density, are obtained and plotted. In the next step, we turn to the stability calculations and show that Damavand plasma is resistant to most of the disturbances. |
| doi_str_mv | 10.1007/s10894-008-9188-4 |
| format | Article |
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Instabilities introduce distortions to the plasma magnetic surfaces and its boundaries, their driving force being the radial gradient of plasma toroidal current density. For certain modal numbers, internal kink modes may develop, and their study is feasible according to the energy principle, in which the change in total potential energy due to the disturbance is evaluated. In this article, we present a totally new analysis of MHD equilibrium and stability, and apply it to Damavand tokamak which has a large aspect ratio. For this purpose, we combine perturbation and Green’s function methods to solve for the equilibrium configuration. At this stage, plasma profiles are found explicitly in terms of Bessel functions, and we present a simple expression for estimation of total toroidal plasma current. Then the rest of plasma profiles, including poloidal magnetic flux, safety factor, and toroidal current density, are obtained and plotted. In the next step, we turn to the stability calculations and show that Damavand plasma is resistant to most of the disturbances.</description><identifier>ISSN: 0164-0313</identifier><identifier>EISSN: 1572-9591</identifier><identifier>DOI: 10.1007/s10894-008-9188-4</identifier><identifier>CODEN: JFENDS</identifier><language>eng</language><publisher>Boston: Springer US</publisher><subject>Applied sciences ; Aspect ratio ; Bessel functions ; Controled nuclear fusion plants ; Current density ; Electrons ; Energy ; Energy Systems ; Energy. 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Instabilities introduce distortions to the plasma magnetic surfaces and its boundaries, their driving force being the radial gradient of plasma toroidal current density. For certain modal numbers, internal kink modes may develop, and their study is feasible according to the energy principle, in which the change in total potential energy due to the disturbance is evaluated. In this article, we present a totally new analysis of MHD equilibrium and stability, and apply it to Damavand tokamak which has a large aspect ratio. For this purpose, we combine perturbation and Green’s function methods to solve for the equilibrium configuration. At this stage, plasma profiles are found explicitly in terms of Bessel functions, and we present a simple expression for estimation of total toroidal plasma current. Then the rest of plasma profiles, including poloidal magnetic flux, safety factor, and toroidal current density, are obtained and plotted. In the next step, we turn to the stability calculations and show that Damavand plasma is resistant to most of the disturbances.</description><subject>Applied sciences</subject><subject>Aspect ratio</subject><subject>Bessel functions</subject><subject>Controled nuclear fusion plants</subject><subject>Current density</subject><subject>Electrons</subject><subject>Energy</subject><subject>Energy Systems</subject><subject>Energy. Thermal use of fuels</subject><subject>Equilibrium</subject><subject>Exact sciences and technology</subject><subject>Geometry</subject><subject>Green's functions</subject><subject>Installations for energy generation and conversion: thermal and electrical energy</subject><subject>Magnetic fields</subject><subject>Magnetic flux</subject><subject>Magnetohydrodynamics</subject><subject>Nuclear Energy</subject><subject>Nuclear Fusion</subject><subject>Original Paper</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Plasma</subject><subject>Plasma currents</subject><subject>Plasma Physics</subject><subject>Potential energy</subject><subject>Safety factors</subject><subject>Stability analysis</subject><subject>Sustainable Development</subject><subject>Tokamak devices</subject><subject>Toroidal plasmas</subject><issn>0164-0313</issn><issn>1572-9591</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kEtLAzEUhYMoWKs_wN2AiKvRvB9LqdWKFRfWdchkMpJ2Hm3SEfrvTZmiILi64Z7vHk4OAJcI3iIIxV1EUCqaQyhzhaTM6REYISZwrphCx2AEEU8qQeQUnMW4hBAqSdUI8NfZQzbd9L72RfB9k5m2zF58u8ret6ZI2-0u8232YBrztZcW3So9V-fgpDJ1dBeHOQYfj9PFZJbP356eJ_fz3BIhtzl2ilmkDOLcwNIVBjMrnDSsKnlZFUpwipmgjEvEJRVEGCQtxaRyUhpICzIGN4PvOnSb3sWtbny0rq5N67o-6vRXKDBBLJFXf8hl14c2hdM4UQRyBnGi0EDZ0MUYXKXXwTcm7DSCel-kHorUqci9udQ03VwfnE20pq6Caa2PP4c4RWAKq8ThgYtJaj9d-E3wv_k3MWl_1g</recordid><startdate>20090901</startdate><enddate>20090901</enddate><creator>Dini, Fatemeh</creator><creator>Khorasani, Sina</creator><general>Springer US</general><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>P5Z</scope><scope>P62</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope></search><sort><creationdate>20090901</creationdate><title>MHD Equilibrium and Kink Stability in Damavand Tokamak</title><author>Dini, Fatemeh ; Khorasani, Sina</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c378t-2e95c19a166a0deba25c7e8a5fd6dfb976425745681684737a18c423fe88a04b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Applied sciences</topic><topic>Aspect ratio</topic><topic>Bessel functions</topic><topic>Controled nuclear fusion plants</topic><topic>Current density</topic><topic>Electrons</topic><topic>Energy</topic><topic>Energy Systems</topic><topic>Energy. 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Instabilities introduce distortions to the plasma magnetic surfaces and its boundaries, their driving force being the radial gradient of plasma toroidal current density. For certain modal numbers, internal kink modes may develop, and their study is feasible according to the energy principle, in which the change in total potential energy due to the disturbance is evaluated. In this article, we present a totally new analysis of MHD equilibrium and stability, and apply it to Damavand tokamak which has a large aspect ratio. For this purpose, we combine perturbation and Green’s function methods to solve for the equilibrium configuration. At this stage, plasma profiles are found explicitly in terms of Bessel functions, and we present a simple expression for estimation of total toroidal plasma current. Then the rest of plasma profiles, including poloidal magnetic flux, safety factor, and toroidal current density, are obtained and plotted. In the next step, we turn to the stability calculations and show that Damavand plasma is resistant to most of the disturbances.</abstract><cop>Boston</cop><pub>Springer US</pub><doi>10.1007/s10894-008-9188-4</doi><tpages>8</tpages></addata></record> |
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| subjects | Applied sciences Aspect ratio Bessel functions Controled nuclear fusion plants Current density Electrons Energy Energy Systems Energy. Thermal use of fuels Equilibrium Exact sciences and technology Geometry Green's functions Installations for energy generation and conversion: thermal and electrical energy Magnetic fields Magnetic flux Magnetohydrodynamics Nuclear Energy Nuclear Fusion Original Paper Physics Physics and Astronomy Plasma Plasma currents Plasma Physics Potential energy Safety factors Stability analysis Sustainable Development Tokamak devices Toroidal plasmas |
| title | MHD Equilibrium and Kink Stability in Damavand Tokamak |
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