Investigation of energy transport in DIII-D High- β P EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models
Abstract
Energy transport analyses of DIII-D high-βP EAST-demonstration discharges have been performed using the TGYRO transport package with TGLF turbulent and NEO neoclassical transport models under the OMFIT integrated modeling framework. Ion energy transport is shown to be dominated by neoclassical transport and ion temperature profiles predicted by TGYRO agree closely with the experimental measured profiles for these high- βP discharges. Ion energy transport is largely insensitive to reductions in the E × B flow shear stabilization. The Shafranov shift is shown to play a role in the suppression of the ion turbulent energy transport below the neoclassical level. Electron turbulent energy transport is under-predicted by TGLF and a significant shortfall in the electron energy transport over the whole core plasma is found with TGLF predictions for these high- βP discharges. TGYRO can successfully predict the experimental ion and electron temperature profiles by artificially increasing the saturated turbulence level for ETG driven modes used in TGLF.
- Authors:
- Publication Date:
- Research Org.:
- General Atomics, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1338854
- Alternate Identifier(s):
- OSTI ID: 1338855; OSTI ID: 1372466; OSTI ID: 1374818
- Grant/Contract Number:
- FC02-04ER54698; FG03-95ER54309; 2014GB106001; 2015GB101000; 2015GB102001; 2015GB110001
- Resource Type:
- Published Article
- Journal Name:
- Nuclear Fusion
- Additional Journal Information:
- Journal Name: Nuclear Fusion Journal Volume: 57 Journal Issue: 3; Journal ID: ISSN 0029-5515
- Publisher:
- IOP Publishing
- Country of Publication:
- IAEA
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; high-BP; energy transport; EXB; Shafranov shif
Citation Formats
Pan, C., Staebler, G. M., Lao, L. L., Garofalo, A. M., Gong, X., Ren, Q., McClenaghan, J., Li, G., Ding, S., Qian, J., Wan, B., Xu, G. S., Solomon, W., Meneghini, O., and Smith, S. P. Investigation of energy transport in DIII-D High- β P EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models. IAEA: N. p., 2017.
Web. doi:10.1088/1741-4326/aa4ff8.
Pan, C., Staebler, G. M., Lao, L. L., Garofalo, A. M., Gong, X., Ren, Q., McClenaghan, J., Li, G., Ding, S., Qian, J., Wan, B., Xu, G. S., Solomon, W., Meneghini, O., & Smith, S. P. Investigation of energy transport in DIII-D High- β P EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models. IAEA. https://doi.org/10.1088/1741-4326/aa4ff8
Pan, C., Staebler, G. M., Lao, L. L., Garofalo, A. M., Gong, X., Ren, Q., McClenaghan, J., Li, G., Ding, S., Qian, J., Wan, B., Xu, G. S., Solomon, W., Meneghini, O., and Smith, S. P. Wed .
"Investigation of energy transport in DIII-D High- β P EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models". IAEA. https://doi.org/10.1088/1741-4326/aa4ff8.
@article{osti_1338854,
title = {Investigation of energy transport in DIII-D High- β P EAST-demonstration discharges with the TGLF turbulent and NEO neoclassical transport models},
author = {Pan, C. and Staebler, G. M. and Lao, L. L. and Garofalo, A. M. and Gong, X. and Ren, Q. and McClenaghan, J. and Li, G. and Ding, S. and Qian, J. and Wan, B. and Xu, G. S. and Solomon, W. and Meneghini, O. and Smith, S. P.},
abstractNote = {Energy transport analyses of DIII-D high-βP EAST-demonstration discharges have been performed using the TGYRO transport package with TGLF turbulent and NEO neoclassical transport models under the OMFIT integrated modeling framework. Ion energy transport is shown to be dominated by neoclassical transport and ion temperature profiles predicted by TGYRO agree closely with the experimental measured profiles for these high- βP discharges. Ion energy transport is largely insensitive to reductions in the E × B flow shear stabilization. The Shafranov shift is shown to play a role in the suppression of the ion turbulent energy transport below the neoclassical level. Electron turbulent energy transport is under-predicted by TGLF and a significant shortfall in the electron energy transport over the whole core plasma is found with TGLF predictions for these high- βP discharges. TGYRO can successfully predict the experimental ion and electron temperature profiles by artificially increasing the saturated turbulence level for ETG driven modes used in TGLF.},
doi = {10.1088/1741-4326/aa4ff8},
journal = {Nuclear Fusion},
number = 3,
volume = 57,
place = {IAEA},
year = {Wed Jan 11 00:00:00 EST 2017},
month = {Wed Jan 11 00:00:00 EST 2017}
}
https://doi.org/10.1088/1741-4326/aa4ff8
Web of Science
Works referenced in this record:
Diffusion Driven Plasma Currents and Bootstrap Tokamak
journal, January 1971
- Bickerton, R. J.; Connor, J. W.; Taylor, J. B.
- Nature Physical Science, Vol. 229, Issue 4
Plasma Transport in Toroidal Confinement Systems
journal, January 1972
- Rosenbluth, M. N.
- Physics of Fluids, Vol. 15, Issue 1
Theory of plasma transport in toroidal confinement systems
journal, April 1976
- Hinton, F. L.; Hazeltine, R. D.
- Reviews of Modern Physics, Vol. 48, Issue 2
Bootstrap current in TFTR
journal, March 1988
- Zarnstorff, M. C.; Bell, M. G.; Bitter, M.
- Physical Review Letters, Vol. 60, Issue 13
Stationary, high bootstrap fraction plasmas in DIII-D without inductive current control
journal, May 2005
- Politzer, P. A.; Hyatt, A. W.; Luce, T. C.
- Nuclear Fusion, Vol. 45, Issue 6
Compatibility of internal transport barrier with steady-state operation in the high bootstrap fraction regime on DIII-D
journal, November 2015
- Garofalo, A. M.; Gong, X.; Grierson, B. A.
- Nuclear Fusion, Vol. 55, Issue 12
Progress toward steady-state tokamak operation exploiting the high bootstrap current fraction regime
journal, June 2016
- Ren, Q. L.; Garofalo, A. M.; Gong, X. Z.
- Physics of Plasmas, Vol. 23, Issue 6
Gyro-Landau fluid equations for trapped and passing particles
journal, October 2005
- Staebler, G. M.; Kinsey, J. E.; Waltz, R. E.
- Physics of Plasmas, Vol. 12, Issue 10
A theory-based transport model with comprehensive physics
journal, May 2007
- Staebler, G. M.; Kinsey, J. E.; Waltz, R. E.
- Physics of Plasmas, Vol. 14, Issue 5
New Paradigm for Suppression of Gyrokinetic Turbulence by Velocity Shear
journal, January 2013
- Staebler, G. M.; Waltz, R. E.; Candy, J.
- Physical Review Letters, Vol. 110, Issue 5
A new paradigm for E × B velocity shear suppression of gyro-kinetic turbulence and the momentum pinch
journal, September 2013
- Staebler, G. M.; Candy, J.; Waltz, R. E.
- Nuclear Fusion, Vol. 53, Issue 11
An Eulerian gyrokinetic-Maxwell solver
journal, April 2003
- Candy, J.; Waltz, R. E.
- Journal of Computational Physics, Vol. 186, Issue 2
The first transport code simulations using the trapped gyro-Landau-fluid model
journal, May 2008
- Kinsey, J. E.; Staebler, G. M.; Waltz, R. E.
- Physics of Plasmas, Vol. 15, Issue 5
Trapped gyro-Landau-fluid transport modeling of DIII-D hybrid discharges
journal, December 2010
- Kinsey, J. E.; Staebler, G. M.; Petty, C. C.
- Physics of Plasmas, Vol. 17, Issue 12
Predictions of the near edge transport shortfall in DIII-D L-mode plasmas using the trapped gyro-Landau-fluid model
journal, January 2015
- Kinsey, J. E.; Staebler, G. M.; Candy, J.
- Physics of Plasmas, Vol. 22, Issue 1
Observation of Reduced Electron-Temperature Fluctuations in the Coreof H-Mode Plasmas
journal, January 2008
- Schmitz, L.; White, A. E.; Carter, T. A.
- Physical Review Letters, Vol. 100, Issue 3
A Key to Improved Ion Core Confinement in the JET Tokamak: Ion Stiffness Mitigation due to Combined Plasma Rotation and Low Magnetic Shear
journal, September 2011
- Mantica, P.; Angioni, C.; Challis, C.
- Physical Review Letters, Vol. 107, Issue 13
Transport and turbulence studies in the linear ohmic confinement regime in Alcator C-Mod
journal, November 2012
- Porkolab, M.; Dorris, J.; Ennever, P.
- Plasma Physics and Controlled Fusion, Vol. 54, Issue 12
Transport properties of H-mode plasmas with dominant electron heating in comparison to dominant ion heating at ASDEX Upgrade
journal, February 2015
- Sommer, F.; Stober, J.; Angioni, C.
- Nuclear Fusion, Vol. 55, Issue 3
Resolving the mystery of transport within internal transport barriers
journal, May 2014
- Staebler, G. M.; Kinsey, J. E.; Belli, E. A.
- Physics of Plasmas, Vol. 21, Issue 5
Tokamak profile prediction using direct gyrokinetic and neoclassical simulation
journal, June 2009
- Candy, J.; Holland, C.; Waltz, R. E.
- Physics of Plasmas, Vol. 16, Issue 6
Turbulent energy exchange: Calculation and relevance for profile prediction
journal, August 2013
- Candy, J.
- Physics of Plasmas, Vol. 20, Issue 8
Integrated Modeling of Tokamak Experiments with OMFIT
journal, January 2013
- Meneghini, Orso; Lao, Lang
- Plasma and Fusion Research, Vol. 8, Issue 0
Integrated modeling applications for tokamak experiments with OMFIT
journal, July 2015
- Meneghini, O.; Smith, S. P.; Lao, L. L.
- Nuclear Fusion, Vol. 55, Issue 8
Effects of E×B velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices
journal, May 1997
- Burrell, K. H.
- Physics of Plasmas, Vol. 4, Issue 5
Suppression of turbulence and transport by sheared flow
journal, January 2000
- Terry, P. W.
- Reviews of Modern Physics, Vol. 72, Issue 1
Electron heat transport in improved confinement discharges in DIII-D
journal, May 1999
- Stallard, B. W.; Greenfield, C. M.; Staebler, G. M.
- Physics of Plasmas, Vol. 6, Issue 5
Gyrofluid simulations of turbulence suppression in reversed-shear experiments on the Tokamak Fusion Test Reactor
journal, May 1997
- Beer, M. A.; Hammett, G. W.; Rewoldt, G.
- Physics of Plasmas, Vol. 4, Issue 5
Separation of β̄ p and ℓ i in tokamaks of non-circular cross-section
journal, October 1985
- Lao, L. L.; John, H. St.; Stambaugh, R. D.
- Nuclear Fusion, Vol. 25, Issue 10
L-mode validation studies of gyrokinetic turbulence simulations via multiscale and multifield turbulence measurements on the DIII-D tokamak
journal, May 2011
- Rhodes, T. L.; Holland, C.; Smith, S. P.
- Nuclear Fusion, Vol. 51, Issue 6
Measurements of core electron temperature and density fluctuations in DIII-D and comparison to nonlinear gyrokinetic simulations
journal, May 2008
- White, A. E.; Schmitz, L.; McKee, G. R.
- Physics of Plasmas, Vol. 15, Issue 5
Measurements of the cross-phase angle between density and electron temperature fluctuations and comparison with gyrokinetic simulations
journal, May 2010
- White, A. E.; Peebles, W. A.; Rhodes, T. L.
- Physics of Plasmas, Vol. 17, Issue 5
Implementation and application of two synthetic diagnostics for validating simulations of core tokamak turbulence
journal, May 2009
- Holland, C.; White, A. E.; McKee, G. R.
- Physics of Plasmas, Vol. 16, Issue 5
Advances in validating gyrokinetic turbulence models against L- and H-mode plasmas
journal, May 2011
- Holland, C.; Schmitz, L.; Rhodes, T. L.
- Physics of Plasmas, Vol. 18, Issue 5
Probing plasma turbulence by modulating the electron temperature gradient
journal, May 2010
- DeBoo, J. C.; Holland, C.; Rhodes, T. L.
- Physics of Plasmas, Vol. 17, Issue 5
Investigation of the transport shortfall in Alcator C-Mod L-mode plasmas
journal, March 2013
- Howard, N. T.; White, A. E.; Greenwald, M.
- Physics of Plasmas, Vol. 20, Issue 3
Multi-scale gyrokinetic simulation of tokamak plasmas: enhanced heat loss due to cross-scale coupling of plasma turbulence
journal, December 2015
- Howard, N. T.; Holland, C.; White, A. E.
- Nuclear Fusion, Vol. 56, Issue 1
Plasma microturbulence simulation of instabilities at highly disparate scales
journal, July 2007
- Candy, J.; Waltz, R. E.; Fahey, M. R.
- Journal of Physics: Conference Series, Vol. 78
Works referencing / citing this record:
Transport barriers in bootstrap-driven tokamaks
journal, May 2018
- Staebler, G. M.; Garofalo, A. M.; Pan, C.
- Physics of Plasmas, Vol. 25, Issue 5
Integrated modeling of plasma ramp-up in DIII-D ITER-like and high bootstrap current scenario discharges
journal, April 2018
- Wu, M. Q.; Pan, C. K.; Chan, V. S.
- Physics of Plasmas, Vol. 25, Issue 4