NSTX/NSTX-U theory, modeling and analysis results

S. M. Kaye, D. J. Battaglia, D. Baver, E. Belova, J. W. Berkery, V. N. Duarte, N. Ferraro, E. Fredrickson, N. Gorelenkov, W. Guttenfelder, G. Z. Hao, W. Heidbrink, O. Izacard, D. Kim, I. Krebs, R. La Haye, J. Lestz, D. Liu, L. A. Morton, J. Myra & 71 others D. Pfefferle, M. Podesta, Y. Ren, J. Riquezes, S. A. Sabbagh, M. Schneller, F. Scotti, V. Soukhanovskii, S. J. Zweben, J. W. Ahn, J. P. Allain, R. Barchfeld, F. Bedoya, R. E. Bell, N. Bertelli, A. Bhattacharjee, M. D. Boyer, D. Brennan, G. Canal, J. Canik, N. Crocker, D. Darrow, L. Delgado-Aparicio, A. Diallo, C. Domier, F. Ebrahimi, T. Evans, R. Fonck, H. Frerichs, K. Gan, S. Gerhardt, T. Gray, T. Jarboe, S. Jardin, M. A. Jaworski, R. Kaita, B. Koel, E. Kolemen, D. M. Kriete, S. Kubota, B. P. LeBlanc, F. Levinton, N. Luhmann, R. Lunsford, R. Maingi, R. Maqueda, J. E. Menard, D. Mueller, C. E. Myers, M. Ono, J-K Park, R. Perkins, F. Poli, R. Raman, M. Reinke, T. Rhodes, C. Rowley, D. Russell, E. Schuster, O. Schmitz, Y. Sechrest, C. H. Skinner, D. R. Smith, T. Stotzfus-Dueck, B. Stratton, G. Taylor, K. Tritz, W. Wang, Z. Wang, I. Waters, B. Wirth

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The mission of the spherical tokamak NSTX-U is to explore the physics that drives core and pedestal transport and stability at high-β and low collisionality, as part of the development of the spherical tokamak (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 power for 5 s. 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 parameter space that is relevant for both alpha-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. These studies have addressed issues in thermal plasma transport, macrostability, energetic particlet-driven instabilities at ion-cyclotron frequencies and below, and edge and divertor physics.

Original languageEnglish
Article number112007
Number of pages16
JournalNuclear Fusion
Volume59
DOIs
Publication statusPublished - 5 Jun 2019

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physics
operations research
pilot plants
low aspect ratio
field coils
beam injection
thermal plasmas
cyclotron frequency
neutral beams
energetic particles
ramps
high aspect ratio
confidence
projection
recovery
electromagnetism
magnetic fields
ions

Cite this

Kaye, S. M., Battaglia, D. J., Baver, D., Belova, E., Berkery, J. W., Duarte, V. N., ... Wirth, B. (2019). NSTX/NSTX-U theory, modeling and analysis results. Nuclear Fusion, 59, [112007]. https://doi.org/10.1088/1741-4326/ab023a
Kaye, S. M. ; Battaglia, D. J. ; Baver, D. ; Belova, E. ; Berkery, J. W. ; Duarte, V. N. ; Ferraro, N. ; Fredrickson, E. ; Gorelenkov, N. ; Guttenfelder, W. ; Hao, G. Z. ; Heidbrink, W. ; Izacard, O. ; Kim, D. ; Krebs, I. ; La Haye, R. ; Lestz, J. ; Liu, D. ; Morton, L. A. ; Myra, J. ; Pfefferle, D. ; Podesta, M. ; Ren, Y. ; Riquezes, J. ; Sabbagh, S. A. ; Schneller, M. ; Scotti, F. ; Soukhanovskii, V. ; Zweben, S. J. ; Ahn, J. W. ; Allain, J. P. ; Barchfeld, R. ; Bedoya, F. ; Bell, R. E. ; Bertelli, N. ; Bhattacharjee, A. ; Boyer, M. D. ; Brennan, D. ; Canal, G. ; Canik, J. ; Crocker, N. ; Darrow, D. ; Delgado-Aparicio, L. ; Diallo, A. ; Domier, C. ; Ebrahimi, F. ; Evans, T. ; Fonck, R. ; Frerichs, H. ; Gan, K. ; Gerhardt, S. ; Gray, T. ; Jarboe, T. ; Jardin, S. ; Jaworski, M. A. ; Kaita, R. ; Koel, B. ; Kolemen, E. ; Kriete, D. M. ; Kubota, S. ; LeBlanc, B. P. ; Levinton, F. ; Luhmann, N. ; Lunsford, R. ; Maingi, R. ; Maqueda, R. ; Menard, J. E. ; Mueller, D. ; Myers, C. E. ; Ono, M. ; Park, J-K ; Perkins, R. ; Poli, F. ; Raman, R. ; Reinke, M. ; Rhodes, T. ; Rowley, C. ; Russell, D. ; Schuster, E. ; Schmitz, O. ; Sechrest, Y. ; Skinner, C. H. ; Smith, D. R. ; Stotzfus-Dueck, T. ; Stratton, B. ; Taylor, G. ; Tritz, K. ; Wang, W. ; Wang, Z. ; Waters, I. ; Wirth, B. / NSTX/NSTX-U theory, modeling and analysis results. In: Nuclear Fusion. 2019 ; Vol. 59.
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abstract = "The mission of the spherical tokamak NSTX-U is to explore the physics that drives core and pedestal transport and stability at high-β and low collisionality, as part of the development of the spherical tokamak (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 power for 5 s. 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 parameter space that is relevant for both alpha-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. These studies have addressed issues in thermal plasma transport, macrostability, energetic particlet-driven instabilities at ion-cyclotron frequencies and below, and edge and divertor physics.",
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Kaye, SM, Battaglia, DJ, Baver, D, Belova, E, Berkery, JW, Duarte, VN, Ferraro, N, Fredrickson, E, Gorelenkov, N, Guttenfelder, W, Hao, GZ, Heidbrink, W, Izacard, O, Kim, D, Krebs, I, La Haye, R, Lestz, J, Liu, D, Morton, LA, Myra, J, Pfefferle, D, Podesta, M, Ren, Y, Riquezes, J, Sabbagh, SA, Schneller, M, Scotti, F, Soukhanovskii, V, Zweben, SJ, Ahn, JW, Allain, JP, Barchfeld, R, Bedoya, F, Bell, RE, Bertelli, N, Bhattacharjee, A, Boyer, MD, Brennan, D, Canal, G, Canik, J, Crocker, N, Darrow, D, Delgado-Aparicio, L, Diallo, A, Domier, C, Ebrahimi, F, Evans, T, Fonck, R, Frerichs, H, Gan, K, Gerhardt, S, Gray, T, Jarboe, T, Jardin, S, Jaworski, MA, Kaita, R, Koel, B, Kolemen, E, Kriete, DM, Kubota, S, LeBlanc, BP, Levinton, F, Luhmann, N, Lunsford, R, Maingi, R, Maqueda, R, Menard, JE, Mueller, D, Myers, CE, Ono, M, Park, J-K, Perkins, R, Poli, F, Raman, R, Reinke, M, Rhodes, T, Rowley, C, Russell, D, Schuster, E, Schmitz, O, Sechrest, Y, Skinner, CH, Smith, DR, Stotzfus-Dueck, T, Stratton, B, Taylor, G, Tritz, K, Wang, W, Wang, Z, Waters, I & Wirth, B 2019, 'NSTX/NSTX-U theory, modeling and analysis results' Nuclear Fusion, vol. 59, 112007. https://doi.org/10.1088/1741-4326/ab023a

NSTX/NSTX-U theory, modeling and analysis results. / Kaye, S. M.; Battaglia, D. J.; Baver, D.; Belova, E.; Berkery, J. W.; Duarte, V. N.; Ferraro, N.; Fredrickson, E.; Gorelenkov, N.; Guttenfelder, W.; Hao, G. Z.; Heidbrink, W.; Izacard, O.; Kim, D.; Krebs, I.; La Haye, R.; Lestz, J.; Liu, D.; Morton, L. A.; Myra, J.; Pfefferle, D.; Podesta, M.; Ren, Y.; Riquezes, J.; Sabbagh, S. A.; Schneller, M.; Scotti, F.; Soukhanovskii, V.; Zweben, S. J.; Ahn, J. W.; Allain, J. P.; Barchfeld, R.; Bedoya, F.; Bell, R. E.; Bertelli, N.; Bhattacharjee, A.; Boyer, M. D.; Brennan, D.; Canal, G.; Canik, J.; Crocker, N.; Darrow, D.; Delgado-Aparicio, L.; Diallo, A.; Domier, C.; Ebrahimi, F.; Evans, T.; Fonck, R.; Frerichs, H.; Gan, K.; Gerhardt, S.; Gray, T.; Jarboe, T.; Jardin, S.; Jaworski, M. A.; Kaita, R.; Koel, B.; Kolemen, E.; Kriete, D. M.; Kubota, S.; LeBlanc, B. P.; Levinton, F.; Luhmann, N.; Lunsford, R.; Maingi, R.; Maqueda, R.; Menard, J. E.; Mueller, D.; Myers, C. E.; Ono, M.; Park, J-K; Perkins, R.; Poli, F.; Raman, R.; Reinke, M.; Rhodes, T.; Rowley, C.; Russell, D.; Schuster, E.; Schmitz, O.; Sechrest, Y.; Skinner, C. H.; Smith, D. R.; Stotzfus-Dueck, T.; Stratton, B.; Taylor, G.; Tritz, K.; Wang, W.; Wang, Z.; Waters, I.; Wirth, B.

In: Nuclear Fusion, Vol. 59, 112007, 05.06.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - NSTX/NSTX-U theory, modeling and analysis results

AU - Kaye, S. M.

AU - Battaglia, D. J.

AU - Baver, D.

AU - Belova, E.

AU - Berkery, J. W.

AU - Duarte, V. N.

AU - Ferraro, N.

AU - Fredrickson, E.

AU - Gorelenkov, N.

AU - Guttenfelder, W.

AU - Hao, G. Z.

AU - Heidbrink, W.

AU - Izacard, O.

AU - Kim, D.

AU - Krebs, I.

AU - La Haye, R.

AU - Lestz, J.

AU - Liu, D.

AU - Morton, L. A.

AU - Myra, J.

AU - Pfefferle, D.

AU - Podesta, M.

AU - Ren, Y.

AU - Riquezes, J.

AU - Sabbagh, S. A.

AU - Schneller, M.

AU - Scotti, F.

AU - Soukhanovskii, V.

AU - Zweben, S. J.

AU - Ahn, J. W.

AU - Allain, J. P.

AU - Barchfeld, R.

AU - Bedoya, F.

AU - Bell, R. E.

AU - Bertelli, N.

AU - Bhattacharjee, A.

AU - Boyer, M. D.

AU - Brennan, D.

AU - Canal, G.

AU - Canik, J.

AU - Crocker, N.

AU - Darrow, D.

AU - Delgado-Aparicio, L.

AU - Diallo, A.

AU - Domier, C.

AU - Ebrahimi, F.

AU - Evans, T.

AU - Fonck, R.

AU - Frerichs, H.

AU - Gan, K.

AU - Gerhardt, S.

AU - Gray, T.

AU - Jarboe, T.

AU - Jardin, S.

AU - Jaworski, M. A.

AU - Kaita, R.

AU - Koel, B.

AU - Kolemen, E.

AU - Kriete, D. M.

AU - Kubota, S.

AU - LeBlanc, B. P.

AU - Levinton, F.

AU - Luhmann, N.

AU - Lunsford, R.

AU - Maingi, R.

AU - Maqueda, R.

AU - Menard, J. E.

AU - Mueller, D.

AU - Myers, C. E.

AU - Ono, M.

AU - Park, J-K

AU - Perkins, R.

AU - Poli, F.

AU - Raman, R.

AU - Reinke, M.

AU - Rhodes, T.

AU - Rowley, C.

AU - Russell, D.

AU - Schuster, E.

AU - Schmitz, O.

AU - Sechrest, Y.

AU - Skinner, C. H.

AU - Smith, D. R.

AU - Stotzfus-Dueck, T.

AU - Stratton, B.

AU - Taylor, G.

AU - Tritz, K.

AU - Wang, W.

AU - Wang, Z.

AU - Waters, I.

AU - Wirth, B.

PY - 2019/6/5

Y1 - 2019/6/5

N2 - The mission of the spherical tokamak NSTX-U is to explore the physics that drives core and pedestal transport and stability at high-β and low collisionality, as part of the development of the spherical tokamak (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 power for 5 s. 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 parameter space that is relevant for both alpha-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. These studies have addressed issues in thermal plasma transport, macrostability, energetic particlet-driven instabilities at ion-cyclotron frequencies and below, and edge and divertor physics.

AB - The mission of the spherical tokamak NSTX-U is to explore the physics that drives core and pedestal transport and stability at high-β and low collisionality, as part of the development of the spherical tokamak (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 power for 5 s. 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 parameter space that is relevant for both alpha-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. These studies have addressed issues in thermal plasma transport, macrostability, energetic particlet-driven instabilities at ion-cyclotron frequencies and below, and edge and divertor physics.

KW - NSTX

KW - NSTX-U

KW - overview

KW - DYNAMICS

KW - MODES

U2 - 10.1088/1741-4326/ab023a

DO - 10.1088/1741-4326/ab023a

M3 - Article

VL - 59

JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

M1 - 112007

ER -

Kaye SM, Battaglia DJ, Baver D, Belova E, Berkery JW, Duarte VN et al. NSTX/NSTX-U theory, modeling and analysis results. Nuclear Fusion. 2019 Jun 5;59. 112007. https://doi.org/10.1088/1741-4326/ab023a