Multi-scale transport in the DIII-D ITER baseline scenario with direct electron heating and projection to ITER

Grierson, B. A.; Staebler, G. M.; Solomon, W. M.; McKee, G. R.; Holland, C.; Austin, M.; Marinoni, A.; Schmitz, L.; Pinsker, R. I.

doi:10.1063/1.5011387

Multi-scale transport in the DIII-D ITER baseline scenario with direct electron heating and projection to ITER

Journal Article · Mon Feb 12 23:00:00 EST 2018 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5011387· OSTI ID:1432047

Grierson, B. A. ^[1]; Staebler, G. M. ^[2]; ^[2]; McKee, G. R. ^[3]; Holland, C. ^[4]; Austin, M. ^[4]; Marinoni, A. ^[5]; Schmitz, L. ^[6]; Pinsker, R. I. ^[2]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
General Atomics, San Diego, CA (United States)
Univ. of Wisconsin, Madison, WI (United States). Dept. of Engineering Physics
Univ. of Texas, Austin, TX (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
Univ. of California, Los Angeles, CA (United States)

Multi-scale fluctuations measured by turbulence diagnostics spanning long and short wavelength spatial scales impact energy confinement and the scale-lengths of plasma kinetic profiles in the DIII-D ITER baseline scenario with direct electron heating. Contrasting discharge phases with ECH + neutral beam injection (NBI) and NBI only at similar rotation reveal higher energy confinement and lower fluctuations when only NBI heating is used. Modeling of the core transport with TGYRO using the TGLF turbulent transport model and NEO neoclassical transport reproduces the experimental profile changes upon application of direct electron heating and indicates that multi-scale transport mechanisms are responsible for changes in the temperature and density profiles. Intermediate and high-k fluctuations appear responsible for the enhanced electron thermal flux, and intermediate-k electron modes produce an inward particle pinch that increases the inverse density scale length. Projection to ITER is performed with TGLF and indicates a density profile that has a finite scale length due to intermediate-k electron modes at low collisionality and increases the fusion gain. Finally, for a range of E×B shear, the dominant mechanism that increases fusion performance is suppression of outward low-k particle flux and increased density peaking.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)

Contributing Organization:: DIII-D Team

Grant/Contract Number:: FG02-08ER54999; FG03-97ER54415; AC02-09CH11466; FC02-04ER54698; FG02-08ER54984; FG02-07ER54917

OSTI ID:: 1432047

Alternate ID(s):: OSTI ID: 1420351
OSTI ID: 1462499

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 2 Vol. 25; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (33)

The tokamak Monte Carlo fast ion module NUBEAM in the National Transport Code Collaboration library Pankin, Alexei; McCune, Douglas; Andre, Robert Computer Physics Communications, Vol. 159, Issue 3 https://doi.org/10.1016/j.cpc.2003.11.002	journal	June 2004
The beam emission spectroscopy diagnostic on the DIII-D tokamak McKee, G.; Ashley, R.; Durst, R. Review of Scientific Instruments, Vol. 70, Issue 1 https://doi.org/10.1063/1.1149416	journal	January 1999
Extraction of poloidal velocity from charge exchange recombination spectroscopy measurements Solomon, W. M.; Burrell, K. H.; Gohil, P. Review of Scientific Instruments, Vol. 75, Issue 10 https://doi.org/10.1063/1.1790042	journal	October 2004
Beta scaling of transport in microturbulence simulations Candy, J. Physics of Plasmas, Vol. 12, Issue 7 https://doi.org/10.1063/1.1954123	journal	July 2005
Gyro-Landau fluid equations for trapped and passing particles Staebler, G. M.; Kinsey, J. E.; Waltz, R. E. Physics of Plasmas, Vol. 12, Issue 10 https://doi.org/10.1063/1.2044587	journal	October 2005
Collisionality dependence of density peaking in quasilinear gyrokinetic calculations Angioni, C.; Peeters, A. G.; Jenko, F. Physics of Plasmas, Vol. 12, Issue 11 https://doi.org/10.1063/1.2135283	journal	November 2005
A theory-based transport model with comprehensive physics Staebler, G. M.; Kinsey, J. E.; Waltz, R. E. Physics of Plasmas, Vol. 14, Issue 5 https://doi.org/10.1063/1.2436852	journal	May 2007
Tokamak profile prediction using direct gyrokinetic and neoclassical simulation Candy, J.; Holland, C.; Waltz, R. E. Physics of Plasmas, Vol. 16, Issue 6 https://doi.org/10.1063/1.3167820	journal	June 2009
A novel, multichannel, comb-frequency Doppler backscatter system Peebles, W. A.; Rhodes, T. L.; Hillesheim, J. C. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3464266	journal	October 2010
Multi-scale gyrokinetic simulation of Alcator C-Mod tokamak discharges Howard, N. T.; White, A. E.; Greenwald, M. Physics of Plasmas, Vol. 21, Issue 3 https://doi.org/10.1063/1.4869078	journal	March 2014
Tungsten impurity transport experiments in Alcator C-Mod to address high priority research and development for ITERa) Loarte, A.; Reinke, M. L.; Polevoi, A. R. Physics of Plasmas, Vol. 22, Issue 5 https://doi.org/10.1063/1.4921253	journal	May 2015
Exploration of the Super H-mode regime on DIII-D and potential advantages for burning plasma devices Solomon, W. M.; Snyder, P. B.; Bortolon, A. Physics of Plasmas, Vol. 23, Issue 5 https://doi.org/10.1063/1.4944822	journal	March 2016
Role of density gradient driven trapped electron mode turbulence in the H-mode inner core with electron heating Ernst, D. R.; Burrell, K. H.; Guttenfelder, W. Physics of Plasmas, Vol. 23, Issue 5 https://doi.org/10.1063/1.4948723	journal	May 2016
The role of zonal flows in the saturation of multi-scale gyrokinetic turbulence Staebler, G. M.; Candy, J.; Howard, N. T. Physics of Plasmas, Vol. 23, Issue 6 https://doi.org/10.1063/1.4954905	journal	June 2016
Predicting rotation for ITER via studies of intrinsic torque and momentum transport in DIII-D Chrystal, C.; Grierson, B. A.; Staebler, G. M. Physics of Plasmas, Vol. 24, Issue 5 https://doi.org/10.1063/1.4979194	journal	May 2017
A design retrospective of the DIII-D tokamak Luxon, J. L. Nuclear Fusion, Vol. 42, Issue 5 https://doi.org/10.1088/0029-5515/42/5/313	journal	May 2002
Theoretical predictions of the density profile in a tokamak reactor Pereverzev, G. V.; Angioni, C.; Peeters, A. G. Nuclear Fusion, Vol. 45, Issue 4 https://doi.org/10.1088/0029-5515/45/4/001	journal	March 2005
Chapter 2: Plasma confinement and transport Physics), E. J. Doyle (Chair Transport; Modelling), W. A. Houlberg (Chair Confinement Da; Edge), Y. Kamada (Chair Pedestal and Nuclear Fusion, Vol. 47, Issue 6 https://doi.org/10.1088/0029-5515/47/6/S02	journal	June 2007
Predictions of H-mode performance in ITER Budny, R. V.; Andre, R.; Bateman, G. Nuclear Fusion, Vol. 48, Issue 7 https://doi.org/10.1088/0029-5515/48/7/075005	journal	May 2008
Demonstration of ITER operational scenarios on DIII-D Doyle, E. J.; DeBoo, J. C.; Ferron, J. R. Nuclear Fusion, Vol. 50, Issue 7 https://doi.org/10.1088/0029-5515/50/7/075005	journal	June 2010
A first-principles predictive model of the pedestal height and width: development, testing and ITER optimization with the EPED model Snyder, P. B.; Groebner, R. J.; Hughes, J. W. Nuclear Fusion, Vol. 51, Issue 10 https://doi.org/10.1088/0029-5515/51/10/103016	journal	August 2011
Off-diagonal particle and toroidal momentum transport: a survey of experimental, theoretical and modelling aspects Angioni, C.; Camenen, Y.; Casson, F. J. Nuclear Fusion, Vol. 52, Issue 11 https://doi.org/10.1088/0029-5515/52/11/114003	journal	October 2012
Collisionality scaling of main-ion toroidal and poloidal rotation in low torque DIII-D plasmas Grierson, B. A.; Burrell, K. H.; Solomon, W. M. Nuclear Fusion, Vol. 53, Issue 6 https://doi.org/10.1088/0029-5515/53/6/063010	journal	May 2013
Tungsten transport in JET H-mode plasmas in hybrid scenario, experimental observations and modelling Angioni, C.; Mantica, P.; Pütterich, T. Nuclear Fusion, Vol. 54, Issue 8 https://doi.org/10.1088/0029-5515/54/8/083028	journal	July 2014
Transport properties of H-mode plasmas with dominant electron heating in comparison to dominant ion heating at ASDEX Upgrade Sommer, F.; Stober, J.; Angioni, C. Nuclear Fusion, Vol. 55, Issue 3 https://doi.org/10.1088/0029-5515/55/3/033006	journal	February 2015
Gyrokinetic study of turbulent convection of heavy impurities in tokamak plasmas at comparable ion and electron heat fluxes Angioni, C.; Bilato, R.; Casson, F. J. Nuclear Fusion, Vol. 57, Issue 2 https://doi.org/10.1088/0029-5515/57/2/022009	journal	September 2016
Selected transport studies of a tokamak-based DEMO fusion reactor Fable, E.; Wenninger, R.; Kemp, R. Nuclear Fusion, Vol. 57, Issue 2 https://doi.org/10.1088/0029-5515/57/2/022015	journal	September 2016
Non-adiabatic passing electron response and outward impurity convection in gyrokinetic calculations of impurity transport in ASDEX Upgrade plasmas Angioni, C.; Dux, R.; Fable, E. Plasma Physics and Controlled Fusion, Vol. 49, Issue 12 https://doi.org/10.1088/0741-3335/49/12/006	journal	November 2007
Kinetic calculation of neoclassical transport including self-consistent electron and impurity dynamics Belli, E. A.; Candy, J. Plasma Physics and Controlled Fusion, Vol. 50, Issue 9 https://doi.org/10.1088/0741-3335/50/9/095010	journal	July 2008
Core momentum and particle transport studies in the ASDEX Upgrade tokamak McDermott, R. M.; Angioni, C.; Dux, R. Plasma Physics and Controlled Fusion, Vol. 53, Issue 12 https://doi.org/10.1088/0741-3335/53/12/124013	journal	November 2011
Gyrokinetic predictions of multiscale transport in a DIII-D ITER baseline discharge Holland, C.; Howard, N. T.; Grierson, B. A. Nuclear Fusion, Vol. 57, Issue 6 https://doi.org/10.1088/1741-4326/aa6c16	journal	May 2017
The effect of electron cyclotron heating on density fluctuations at ion and electron scales in ITER baseline scenario discharges on the DIII-D tokamak Marinoni, A.; Pinsker, R. I.; Porkolab, M. Nuclear Fusion, Vol. 57, Issue 12 https://doi.org/10.1088/1741-4326/aa8333	journal	September 2017
Density Peaking, Anomalous Pinch, and Collisionality in Tokamak Plasmas Angioni, C.; Peeters, A. G.; Pereverzev, G. V. Physical Review Letters, Vol. 90, Issue 20 https://doi.org/10.1103/PhysRevLett.90.205003	journal	May 2003

Cited By (6)

Propagation of input parameter uncertainties in transport models Vaezi, P.; Holland, C.; Grierson, B. A. Physics of Plasmas, Vol. 25, Issue 10 https://doi.org/10.1063/1.5053906	journal	October 2018
Interpretative and predictive modelling of Joint European Torus collisionality scans Eriksson, F.; Fransson, E.; Oberparleiter, M. Plasma Physics and Controlled Fusion, Vol. 61, Issue 11 https://doi.org/10.1088/1361-6587/ab2f45	journal	September 2019
Progress and challenges in understanding core transport in tokamaks in support to ITER operations Mantica, P.; Angioni, C.; Bonanomi, N. Plasma Physics and Controlled Fusion, Vol. 62, Issue 1 https://doi.org/10.1088/1361-6587/ab5ae1	journal	December 2019
The effect of plasma shape and neutral beam mix on the rotation threshold for RMP-ELM suppression Paz-Soldan, C.; Nazikian, R.; Cui, L. Nuclear Fusion, Vol. 59, Issue 5 https://doi.org/10.1088/1741-4326/ab04c0	journal	March 2019
Predicting the rotation profile in ITER Chrystal, C.; Grierson, B. A.; Haskey, S. R. Nuclear Fusion, Vol. 60, Issue 3 https://doi.org/10.1088/1741-4326/ab6434	journal	January 2020
Interpretative and predictive modelling of Joint European Torus collisionality scans Eriksson, F.; Fransson, E.; Oberparleiter, M. IOP Publishing https://doi.org/10.5445/ir/1000118458	text	January 2019

Similar Records

Multi-scale transport in the DIII-D ITER baseline scenario with direct electron heating and projection to ITER

Dataset · Wed Apr 14 00:00:00 EDT 2021 · OSTI ID:1882390

Application of ECH to the study of transport in ITER baseline scenario-like discharges in DIII-D

Journal Article · Thu Mar 12 00:00:00 EDT 2015 · EPJ Web of Conferences · OSTI ID:1214597

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Multi-scale transport in the DIII-D ITER baseline scenario with direct electron heating and projection to ITER

Citation Formats

References (33)

Cited By (6)

Similar Records

Related Subjects