This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1088/0029-5515/50/3/034001 in citations.
Generic magnetic field model in poloidal divertor tokamaks in the presence of resonant magnetic perturbations
Generic magnetic field model in poloidal divertor tokamaks in the presence of resonant magnetic perturbations
A generic analytical model for the description of magnetic field lines in poloidal divertor tokamaks in the presence of external resonant magnetic perturbations is proposed. It is based on the Hamiltonian description of magnetic field lines in tokamaks. The safety factor and the spectra of magnetic...
Saved in:
Personal Name(s): | Abdullaev, S. S. |
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Contributing Institute: |
Plasmaphysik; IEF-4 |
Published in: | Nuclear fusion, 50 (2010) S. 034001 |
Imprint: |
Vienna
IAEA
2010
|
Physical Description: |
034001 |
DOI: |
10.1088/0029-5515/50/3/034001 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Nuclear Fusion
50 |
Subject (ZB): | |
Publikationsportal JuSER |
A generic analytical model for the description of magnetic field lines in poloidal divertor tokamaks in the presence of external resonant magnetic perturbations is proposed. It is based on the Hamiltonian description of magnetic field lines in tokamaks. The safety factor and the spectra of magnetic perturbations are chosen by the requirement to satisfy their generic behaviour near the magnetic separatrix and at the magnetic axis. The field line equations are integrated by the construction of two symplectic and computationally efficient mappings of field lines. The model for internal MHD modes is also proposed. The mapping procedure for field lines which includes the MHD modes is described. It is shown that the numerically calculated diffusion and convection coefficients of field lines are in close agreement with the quasilinear ones. It is found that in the presence of internal MHD modes at the plasma edge the convectional outward transport of field lines may reverse its direction to inward convectional transport. |