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Title: Self-Organized Stationary States of Tokamaks

Abstract

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”.

Authors:
 [1];  [2];  [3]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. General Atomics, San Diego, CA (United States)
  3. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Max Planck Inst. of Plasma Physics, Garching (Germany)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
Max-Plank Princeton Center for Plasma Physics; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC)
OSTI Identifier:
1273407
Alternate Identifier(s):
OSTI ID: 1226186
Grant/Contract Number:  
AC02-09CH11466
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 115; Journal Issue: 21; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Jardin, S. C., Ferraro, N., and Krebs, I. Self-Organized Stationary States of Tokamaks. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.115.215001.
Jardin, S. C., Ferraro, N., & Krebs, I. Self-Organized Stationary States of Tokamaks. United States. https://doi.org/10.1103/PhysRevLett.115.215001
Jardin, S. C., Ferraro, N., and Krebs, I. Tue . "Self-Organized Stationary States of Tokamaks". United States. https://doi.org/10.1103/PhysRevLett.115.215001. https://www.osti.gov/servlets/purl/1273407.
@article{osti_1273407,
title = {Self-Organized Stationary States of Tokamaks},
author = {Jardin, S. C. and Ferraro, N. and Krebs, I.},
abstractNote = {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”.},
doi = {10.1103/PhysRevLett.115.215001},
journal = {Physical Review Letters},
number = 21,
volume = 115,
place = {United States},
year = {Tue Nov 17 00:00:00 EST 2015},
month = {Tue Nov 17 00:00:00 EST 2015}
}

Journal Article:

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Cited by: 49 works
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Works referenced in this record:

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Works referencing / citing this record:

Dynamic evolution of resistive kink mode with electron diamagnetic drift in tokamaks
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Helical core formation and evolution during current ramp-up in the high-field tokamak Alcator C-Mod
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Role of Hall effect on the resistive kink mode in tokamaks
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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
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