Stabilizing effect of enhanced resistivity on peeling-ballooning instabilities on EAST
Abstract
Previous stability analysis of NSTX equilibrium with lithium-conditioning demonstrates that enhanced resistivity due to the increased effective charge number Zeff (i.e. increased impurity level) can provide a stabilizing effect on low-n edge localized modes. This paper extends the resistivity stabilizing effect to the intermediate-n peeling-ballooning (PB) instabilities with the linear stability analysis of EAST high-confinement mode equilibria in NIMROD two-fluid calculations. However, in this work, the resistivity stabilizing effect on PB instabilities in the EAST tokamak appears weaker than that found in NSTX. This work may provide better insight into the physical mechanism behind the beneficial effects of impurities on pedestal stability.
- Authors:
-
[2];
[3];
[4];
[2];
- Chinese Academy of Sciences (CAS), Hefei (China); Univ. of Science and Technology of China, Hefei (China)
- Univ. of Science and Technology of China, Hefei (China)
- Huazhong Univ. of Science and Technology, Wuhan (China)
- Chinese Academy of Sciences (CAS), Hefei (China)
- Shenzhen Univ. (China)
- Publication Date:
- Research Org.:
- Univ. of Wisconsin, Madison, WI (United States); Univ. of California, Oakland, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Magnetic Confinement Fusion Science Program of China; National Natural Science Foundation of China (NSFC)
- OSTI Identifier:
- 1800636
- Grant/Contract Number:
- FG02-86ER53218; SC0018001; AC02-05CH11231; 2014GB124002; 2015GB101000; 2015GB101004; 11575235; 11575236; 11705237; 11775221; 2019kfyXJJS193
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Plasma Physics and Controlled Fusion
- Additional Journal Information:
- Journal Volume: 62; Journal Issue: 3; Journal ID: ISSN 0741-3335
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; physics; effective charge number; resistivity; peeling-ballooning instabilities; NIMROD; EAST tokamak
Citation Formats
Lin, X., Banerjee, D., Zhu, P., Xu, G. S., Ye, Y., Wang, Y. F., Li, H. L., Zang, Q., Zhang, T., and Chen, Y. J. Stabilizing effect of enhanced resistivity on peeling-ballooning instabilities on EAST. United States: N. p., 2020.
Web. doi:10.1088/1361-6587/ab6d47.
Lin, X., Banerjee, D., Zhu, P., Xu, G. S., Ye, Y., Wang, Y. F., Li, H. L., Zang, Q., Zhang, T., & Chen, Y. J. Stabilizing effect of enhanced resistivity on peeling-ballooning instabilities on EAST. United States. https://doi.org/10.1088/1361-6587/ab6d47
Lin, X., Banerjee, D., Zhu, P., Xu, G. S., Ye, Y., Wang, Y. F., Li, H. L., Zang, Q., Zhang, T., and Chen, Y. J. Mon .
"Stabilizing effect of enhanced resistivity on peeling-ballooning instabilities on EAST". United States. https://doi.org/10.1088/1361-6587/ab6d47. https://www.osti.gov/servlets/purl/1800636.
@article{osti_1800636,
title = {Stabilizing effect of enhanced resistivity on peeling-ballooning instabilities on EAST},
author = {Lin, X. and Banerjee, D. and Zhu, P. and Xu, G. S. and Ye, Y. and Wang, Y. F. and Li, H. L. and Zang, Q. and Zhang, T. and Chen, Y. J.},
abstractNote = {Previous stability analysis of NSTX equilibrium with lithium-conditioning demonstrates that enhanced resistivity due to the increased effective charge number Zeff (i.e. increased impurity level) can provide a stabilizing effect on low-n edge localized modes. This paper extends the resistivity stabilizing effect to the intermediate-n peeling-ballooning (PB) instabilities with the linear stability analysis of EAST high-confinement mode equilibria in NIMROD two-fluid calculations. However, in this work, the resistivity stabilizing effect on PB instabilities in the EAST tokamak appears weaker than that found in NSTX. This work may provide better insight into the physical mechanism behind the beneficial effects of impurities on pedestal stability.},
doi = {10.1088/1361-6587/ab6d47},
journal = {Plasma Physics and Controlled Fusion},
number = 3,
volume = 62,
place = {United States},
year = {Mon Feb 10 00:00:00 EST 2020},
month = {Mon Feb 10 00:00:00 EST 2020}
}
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