Self-Organized Stationary States of Tokamaks

Jardin, S. C.; Ferraro, N.; Krebs, I.

doi:10.1103/PhysRevLett.115.215001

Title: Self-Organized Stationary States of Tokamaks

Journal Article · Tue Nov 17 00:00:00 EST 2015 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.115.215001· OSTI ID:1273407

Jardin, S. C. ^[1]; Ferraro, N. ^[2]; Krebs, I. ^[3]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
General Atomics, San Diego, CA (United States)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Max Planck Inst. of Plasma Physics, Garching (Germany)

We demonstrate that in a 3D resistive magnetohydrodynamic (MHD) simulation, for some parameters it is possible to form a stationary state in a tokamak where a saturated interchange mode in the center of the discharge drives a near helical flow pattern that acts to non-linearly sustain the configuration by adjusting the central loop voltage through a dynamo action. This could explain the physical mechanism for maintaining stationary non-sawtoothing “hybrid” discharges, often referred to as “flux-pumping”.

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: Max-Plank Princeton Center for Plasma Physics; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC)

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1273407

Alternate ID(s):: OSTI ID: 1226186

Journal Information:: Physical Review Letters, Vol. 115, Issue 21; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 49 works

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Dynamic evolution of resistive kink mode with electron diamagnetic drift in tokamaks Zhang, W.; Ma, Z. W.; Zhang, H. W. Physics of Plasmas, Vol. 26, Issue 4 https://doi.org/10.1063/1.5090226	journal	April 2019
Helical core formation and evolution during current ramp-up in the high-field tokamak Alcator C-Mod Wingen, A.; Wilcox, R. S.; Delgado-Aparicio, L. F. Physics of Plasmas, Vol. 26, Issue 2 https://doi.org/10.1063/1.5083055	journal	February 2019
Role of Hall effect on the resistive kink mode in tokamaks Zhang, W.; Ma, Z. W.; Zhang, H. W. Plasma Physics and Controlled Fusion, Vol. 62, Issue 2 https://doi.org/10.1088/1361-6587/ab60ff	journal	January 2020
Local properties of magnetic reconnection in nonlinear resistive- and extended-magnetohydrodynamic toroidal simulations of the sawtooth crash Beidler, M. T.; Cassak, P. A.; Jardin, S. C. Plasma Physics and Controlled Fusion, Vol. 59, Issue 2 https://doi.org/10.1088/1361-6587/59/2/025007	journal	December 2016
Use of reconstructed 3D equilibria to determine onset conditions of helical cores in tokamaks for extrapolation to ITER Wingen, A.; Wilcox, R. S.; Seal, S. K. Nuclear Fusion, Vol. 58, Issue 3 https://doi.org/10.1088/1741-4326/aaa33d	journal	January 2018
Helically self-organized pinches: dynamical regimes and magnetic chaos healing Veranda, Marco; Bonfiglio, Daniele; Cappello, Susanna Nuclear Fusion, Vol. 60, Issue 1 https://doi.org/10.1088/1741-4326/ab4863	journal	October 2019
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Key effects on the confinement improvement of the ASDEX Upgrade hybrid scenario Jian, Xiang; Chan, Vincent S.; Chen, Jiale Nuclear Fusion, Vol. 59, Issue 10 https://doi.org/10.1088/1741-4326/ab3b44	journal	September 2019
Experimental observations of an n = 1 helical core accompanied by a saturated m / n = 2/1 tearing mode with low mode frequencies in JT-60U Bando, T.; Matsunaga, G.; Takechi, M. Plasma Physics and Controlled Fusion, Vol. 61, Issue 11 https://doi.org/10.1088/1361-6587/ab4612	journal	October 2019
Magnetohydrodynamics modelling successfully predicts new helical states in reversed-field pinch fusion plasmas Veranda, Marco; Bonfiglio, Daniele; Cappello, Susanna Nuclear Fusion, Vol. 57, Issue 11 https://doi.org/10.1088/1741-4326/aa7f46	journal	August 2017
Linear and nonlinear simulations of the visco-resistive internal kink mode using the M3D code Shen, Wei; Porcelli, Francesco Nuclear Fusion, Vol. 58, Issue 10 https://doi.org/10.1088/1741-4326/aad9b1	journal	August 2018
Saturated helical mode in EAST high β hybrid plasmas Yuan, Yi; Hu, Liqun; Xu, Liqing Nuclear Fusion, Vol. 60, Issue 1 https://doi.org/10.1088/1741-4326/ab455b	journal	October 2019
Observation of tungsten impurities induced 2/1 snake fluctuations and their interactions with discrete double BAE pairs on EAST Xu, Ming; Zhou, T.; Xu, L. Q. Nuclear Fusion, Vol. 58, Issue 12 https://doi.org/10.1088/1741-4326/aae8b7	journal	November 2018
Magnetic flux pumping in 3D nonlinear magnetohydrodynamic simulations Krebs, I.; Jardin, S. C.; Günter, S. Physics of Plasmas, Vol. 24, Issue 10 https://doi.org/10.1063/1.4990704	journal	October 2017
Flux-driven integrated modelling of main ion pressure and trace tungsten transport in ASDEX Upgrade Linder, O.; Citrin, J.; Hogeweij, G. M. D. Nuclear Fusion, Vol. 59, Issue 1 https://doi.org/10.1088/1741-4326/aae875	journal	November 2018
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