NSTX/NSTX-U theory, modeling and analysis results
Abstract
The mission of the spherical tokamak NSTX-U is to investigate the physics that drives core and pedestal transport and stability at high-β and low collisionality, as part of the development of the ST concept towards a compact, low-cost ST-based Pilot Plant. NSTX- U will ultimately operate at up to 2 MA and 1 T with up to 12 MW of Neutral Beam Injection (NBI) power for 5 seconds. NSTX-U will operate in a regime where electromagnetic instabilities are expected to dominate transport, and beam-heated NSTX-U plasmas will explore a portion of energetic particle (EP) parameter space that is relevant for both α-heated conventional and low aspect ratio burning plasmas. NSTX-U will also develop the physics understanding and control tools to ramp-up and sustain high performance plasmas in a fully- noninductive fashion. NSTX-U began research operations in 2016, but a failure of a divertor magnetic field coil after ten weeks of operation resulted in the suspension of operations and initiation of Recovery activities. During this period, there has been considerable work in the area of analysis, theory and modeling of data from both NSTX and NSTX-U, with a goal of understanding the underlying physics to develop predictive models that can bemore »
- Authors:
-
[1];
[1];
[1]
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Lodestar Research Corp., Boulder, CO (United States)
- Columbia Univ., New York, NY (United States)
- Publication Date:
- Research Org.:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); Lodestar Research Corp., Boulder, CO (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1508617
- Grant/Contract Number:
- AC02-09CH11466; FG02-02ER54678
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Fusion
- Additional Journal Information:
- Journal Volume: 59; Journal Issue: 11; Journal ID: ISSN 0029-5515
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Kaye, Stanley M., Battaglia, D. J., Baver, D. A., Belova, Elena, Berkery, J. W., Duarte, Vinicius N., Ferraro, N., Fredrickson, Eric D., Gorelenkov, Nikolai N., and Guttenfelder, Walter. NSTX/NSTX-U theory, modeling and analysis results. United States: N. p., 2019.
Web. doi:10.1088/1741-4326/ab023a.
Kaye, Stanley M., Battaglia, D. J., Baver, D. A., Belova, Elena, Berkery, J. W., Duarte, Vinicius N., Ferraro, N., Fredrickson, Eric D., Gorelenkov, Nikolai N., & Guttenfelder, Walter. NSTX/NSTX-U theory, modeling and analysis results. United States. https://doi.org/10.1088/1741-4326/ab023a
Kaye, Stanley M., Battaglia, D. J., Baver, D. A., Belova, Elena, Berkery, J. W., Duarte, Vinicius N., Ferraro, N., Fredrickson, Eric D., Gorelenkov, Nikolai N., and Guttenfelder, Walter. Mon .
"NSTX/NSTX-U theory, modeling and analysis results". United States. https://doi.org/10.1088/1741-4326/ab023a. https://www.osti.gov/servlets/purl/1508617.
@article{osti_1508617,
title = {NSTX/NSTX-U theory, modeling and analysis results},
author = {Kaye, Stanley M. and Battaglia, D. J. and Baver, D. A. and Belova, Elena and Berkery, J. W. and Duarte, Vinicius N. and Ferraro, N. and Fredrickson, Eric D. and Gorelenkov, Nikolai N. and Guttenfelder, Walter},
abstractNote = {The mission of the spherical tokamak NSTX-U is to investigate the physics that drives core and pedestal transport and stability at high-β and low collisionality, as part of the development of the ST concept towards a compact, low-cost ST-based Pilot Plant. NSTX- U will ultimately operate at up to 2 MA and 1 T with up to 12 MW of Neutral Beam Injection (NBI) power for 5 seconds. NSTX-U will operate in a regime where electromagnetic instabilities are expected to dominate transport, and beam-heated NSTX-U plasmas will explore a portion of energetic particle (EP) parameter space that is relevant for both α-heated conventional and low aspect ratio burning plasmas. NSTX-U will also develop the physics understanding and control tools to ramp-up and sustain high performance plasmas in a fully- noninductive fashion. NSTX-U began research operations in 2016, but a failure of a divertor magnetic field coil after ten weeks of operation resulted in the suspension of operations and initiation of Recovery activities. During this period, there has been considerable work in the area of analysis, theory and modeling of data from both NSTX and NSTX-U, with a goal of understanding the underlying physics to develop predictive models that can be used for high-confidence projections for both ST and higher aspect ratio regimes. The studies have presented issues in thermal plasma transport, macrostability, energetic particlet-driven instabilities at ion-cyclotron frequencies and below, and edge and divertor physics.},
doi = {10.1088/1741-4326/ab023a},
journal = {Nuclear Fusion},
number = 11,
volume = 59,
place = {United States},
year = {Mon Jan 28 00:00:00 EST 2019},
month = {Mon Jan 28 00:00:00 EST 2019}
}
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Works referencing / citing this record:
Analytic stability boundaries for compressional and global Alfvén eigenmodes driven by fast ions. I. Interaction via ordinary and anomalous cyclotron resonances
journal, February 2020
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