Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X
Abstract
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.
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[1];
[3];
[4];
[6];
[7];
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- Forschungszentrum Juelich (Germany). Inst. fur Energie- und Klimaforschung-Plasmaphysik
- Forschungszentrum Juelich (Germany). Inst. fur Energie- und Klimaforschung-Plasmaphysik; Huazhong Univ. of Science and Technology, Wuhan (China); Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics
- Huazhong Univ. of Science and Technology, Wuhan (China)
- Max Planck Institute for Plasma Physics, Greifswald (Germany)
- Heinrich-Heine University, Düsseldorf (Germany)
- Hiroshima Univ. (Japan)
- Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Forschungszentrum Juelich (Germany). Inst. fur Energie- und Klimaforschung-Plasmaphysik; Huazhong Univ. of Science and Technology, Wuhan (China)
- Forschungszentrum Juelich (Germany). Inst. fur Energie- und Klimaforschung-Plasmaphysik; Chinese Academy of Sciences (CAS), Hefei (China). Institute of Plasma Physics
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE; European Union (EU)
- Contributing Org.:
- W7-X Team
- OSTI Identifier:
- 1974428
- Grant/Contract Number:
- AC02-09CH11466; 101052200
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Fusion
- Additional Journal Information:
- Journal Volume: 63; Journal Issue: 6; Journal ID: ISSN 0029-5515
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; EMC3-EIRENE; beta effect; magnetic topology; edge plasma transport; island divertor
Citation Formats
Xu, Shuai, Liang, Y., Knieps, Alexander, Zhou, Song, Feng, Yuhe, Reiter, D., Suzuki, Yasuhiro, Jia, Manni, Geiger, Joachim, Reimold, F., König, R., Dinklage, Andreas, Harting, D., Luo, Y., Drews, Philipp, Jakubowski, Marcin, Gao, Yu, Pasch, E., Pandey, A., Langenberg, Andreas, Pablant, Novimir, Brezinsek, Sebastijan, Wang, E., Liu, S., Xiang, H. M., Neubauer, O., Huang, J., Cai, J., Yang, J., Liu, J., Liao, L., and Gao, Y. C. Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X. United States: N. p., 2023.
Web. doi:10.1088/1741-4326/acc7b8.
Xu, Shuai, Liang, Y., Knieps, Alexander, Zhou, Song, Feng, Yuhe, Reiter, D., Suzuki, Yasuhiro, Jia, Manni, Geiger, Joachim, Reimold, F., König, R., Dinklage, Andreas, Harting, D., Luo, Y., Drews, Philipp, Jakubowski, Marcin, Gao, Yu, Pasch, E., Pandey, A., Langenberg, Andreas, Pablant, Novimir, Brezinsek, Sebastijan, Wang, E., Liu, S., Xiang, H. M., Neubauer, O., Huang, J., Cai, J., Yang, J., Liu, J., Liao, L., & Gao, Y. C. Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X. United States. https://doi.org/10.1088/1741-4326/acc7b8
Xu, Shuai, Liang, Y., Knieps, Alexander, Zhou, Song, Feng, Yuhe, Reiter, D., Suzuki, Yasuhiro, Jia, Manni, Geiger, Joachim, Reimold, F., König, R., Dinklage, Andreas, Harting, D., Luo, Y., Drews, Philipp, Jakubowski, Marcin, Gao, Yu, Pasch, E., Pandey, A., Langenberg, Andreas, Pablant, Novimir, Brezinsek, Sebastijan, Wang, E., Liu, S., Xiang, H. M., Neubauer, O., Huang, J., Cai, J., Yang, J., Liu, J., Liao, L., and Gao, Y. C. Tue .
"Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X". United States. https://doi.org/10.1088/1741-4326/acc7b8. https://www.osti.gov/servlets/purl/1974428.
@article{osti_1974428,
title = {Modeling of plasma beta effects on the island divertor transport in the standard configuration of W7-X},
author = {Xu, Shuai and Liang, Y. and Knieps, Alexander and Zhou, Song and Feng, Yuhe and Reiter, D. and Suzuki, Yasuhiro and Jia, Manni and Geiger, Joachim and Reimold, F. and König, R. and Dinklage, Andreas and Harting, D. and Luo, Y. and Drews, Philipp and Jakubowski, Marcin and Gao, Yu and Pasch, E. and Pandey, A. and Langenberg, Andreas and Pablant, Novimir and Brezinsek, Sebastijan and Wang, E. and Liu, S. and Xiang, H. M. and Neubauer, O. and Huang, J. and Cai, J. and Yang, J. and Liu, J. and Liao, L. and Gao, Y. C.},
abstractNote = {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.},
doi = {10.1088/1741-4326/acc7b8},
journal = {Nuclear Fusion},
number = 6,
volume = 63,
place = {United States},
year = {Tue Apr 11 00:00:00 EDT 2023},
month = {Tue Apr 11 00:00:00 EDT 2023}
}
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