This title appears in the Scientific Report :
2023
Please use the identifier:
http://dx.doi.org/10.1088/1741-4326/acc7b8 in citations.
Please use the identifier: http://hdl.handle.net/2128/34345 in citations.
Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X
Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X
The influence of plasma beta effects on the edge plasma transport in the Wendelstein 7-X standard configuration is studied systematically by using EMC3-EIRENE combined with a 3D equilibrium code named HINT. The magnetic topology changes induced by plasma beta effects are significantly reflected in p...
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Personal Name(s): | Xu, S. (Corresponding author) |
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Liang, Yunfeng (Corresponding author) / Knieps, A. / Zhou, S. / Feng, Y. / Reiter, D. / Suzuki, Y. / Jia, M. / Geiger, J. / Reimold, F. / König, R. / Dinklage, A. / Harting, D. / Luo, Y. / Drews, P. / Jakubowski, M. / Gao, Y. / Pasch, E. / Pandey, A. / Langenberg, A. / Pablant, N. / Brezinsek, S. / Wang, E. / Liu, S. / Xiang, H. M. / Neubauer, O. / Huang, J. / Cai, J. / Yang, J. / Liu, J. / Liao, L. / Gao, Y. C. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Nuclear fusion, 63 (2023) 6, S. 066005 - |
Imprint: |
Vienna
IAEA
2023
|
DOI: |
10.1088/1741-4326/acc7b8 |
Document Type: |
Journal Article |
Research Program: |
Plasma-Wand-Wechselwirkung |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/34345 in citations.
The influence of plasma beta effects on the edge plasma transport in the Wendelstein 7-X standard configuration is studied systematically by using EMC3-EIRENE combined with a 3D equilibrium code named HINT. The magnetic topology changes induced by plasma beta effects are significantly reflected in plasma transport behaviors and heat flux patterns on divertor targets. After validating the modeling strategy by comparisons with experimental data, the extended simulations for high performance plasmas show that the threshold separatrix density for accessing the power detachment is reduced in higher beta plasmas. Compared with the vacuum field case, the impurity radiation distributions with finite beta effects are modified in the magnetic island region. The divertor heat flux is distributed more evenly along the toroidal direction on the strike line at the vertical target. The strike line on the horizontal target moves towards the pumping gap with an increase in the plasma beta. In addition, the different pressure profiles with the same central beta also result in a modified heat flux pattern on the divertor targets. |