Structure of chaotic magnetic field lines in IR-T1 tokamak due to ergodic magnetic limiter
In this paper we have studied an Ergodic Magnetic Limiter (EML) based chaotic magnetic field for transport control in the edge plasma of IR-T1 tokamak. The resonance created by the EML causes perturbation of the equilibrium field line in tokamak and as a result, the field lines are chaotic in the vi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2018-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5019789 |
| _version_ | 1818529708407521280 |
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| author | S. Ahmadi A. Salar Elahi M. Ghorannevis |
| author_facet | S. Ahmadi A. Salar Elahi M. Ghorannevis |
| author_sort | S. Ahmadi |
| collection | DOAJ |
| description | In this paper we have studied an Ergodic Magnetic Limiter (EML) based chaotic magnetic field for transport control in the edge plasma of IR-T1 tokamak. The resonance created by the EML causes perturbation of the equilibrium field line in tokamak and as a result, the field lines are chaotic in the vicinity of the dimerized island chains. Transport barriers are formed in the chaotic field line and actually observe in tokamak with reverse magnetic shear. We used area-preserving non-twist (and twist) Poincaré maps to describe the formation of transport barriers, which are actually features of Hamiltonian systems. This transport barrier is useful in reducing radial diffusion of the field line and thus improving the plasma confinement. |
| first_indexed | 2024-12-11T17:10:18Z |
| format | Article |
| id | doaj.art-afb221d1d95042f99392562308903167 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-11T17:10:18Z |
| publishDate | 2018-03-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-afb221d1d95042f993925623089031672022-12-22T00:57:34ZengAIP Publishing LLCAIP Advances2158-32262018-03-0183035302035302-1010.1063/1.5019789004803ADVStructure of chaotic magnetic field lines in IR-T1 tokamak due to ergodic magnetic limiterS. Ahmadi0A. Salar Elahi1M. Ghorannevis2Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran 1477893855, IranPlasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran 1477893855, IranPlasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran 1477893855, IranIn this paper we have studied an Ergodic Magnetic Limiter (EML) based chaotic magnetic field for transport control in the edge plasma of IR-T1 tokamak. The resonance created by the EML causes perturbation of the equilibrium field line in tokamak and as a result, the field lines are chaotic in the vicinity of the dimerized island chains. Transport barriers are formed in the chaotic field line and actually observe in tokamak with reverse magnetic shear. We used area-preserving non-twist (and twist) Poincaré maps to describe the formation of transport barriers, which are actually features of Hamiltonian systems. This transport barrier is useful in reducing radial diffusion of the field line and thus improving the plasma confinement.http://dx.doi.org/10.1063/1.5019789 |
| spellingShingle | S. Ahmadi A. Salar Elahi M. Ghorannevis Structure of chaotic magnetic field lines in IR-T1 tokamak due to ergodic magnetic limiter AIP Advances |
| title | Structure of chaotic magnetic field lines in IR-T1 tokamak due to ergodic magnetic limiter |
| title_full | Structure of chaotic magnetic field lines in IR-T1 tokamak due to ergodic magnetic limiter |
| title_fullStr | Structure of chaotic magnetic field lines in IR-T1 tokamak due to ergodic magnetic limiter |
| title_full_unstemmed | Structure of chaotic magnetic field lines in IR-T1 tokamak due to ergodic magnetic limiter |
| title_short | Structure of chaotic magnetic field lines in IR-T1 tokamak due to ergodic magnetic limiter |
| title_sort | structure of chaotic magnetic field lines in ir t1 tokamak due to ergodic magnetic limiter |
| url | http://dx.doi.org/10.1063/1.5019789 |
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