Ion thermal transport in the H-mode edge transport barrier on DIII-D

Haskey, S. R.; Ashourvan, Arash; Banerjee, S.; Barada, K.; Belli, E. A.; Bortolon, A.; Candy, J.; Chen, J.; Chrystal, C.; Grierson, B. A.; Groebner, R. J.; Laggner, F. M.; Knolker, M.; Kramer, G. J.; Major, M. R.; Mckee, G.; Staebler, G. M.; Yan, Z.; Van Zeeland, M. A.

doi:10.1063/5.0072155

Title: Ion thermal transport in the H-mode edge transport barrier on DIII-D

Abstract

The power balance ion heat flux in the pedestal region on DIII-D increases and becomes increasingly anomalous (above conventional neoclassical) in experiments with higher temperature and lower density pedestals where the ion collisionality ($$v^*_i$$) is lowered toward values expected on ITER. Direct measurements of the main-ion temperature are shown to be essential on DIII-D when calculating the ion heat flux due to differences between the temperature of $D^+$ and the more commonly measured $$C^{6+}$$ impurity ions approaching the separatrix. Neoclassical transport calculations from NEO and non-linear gyrokinetic calculations using CGYRO are consistent with these observations and show that while neoclassical transport plays an important role, the turbulent ion heat flux due to ion scale electrostatic turbulence is significant and can contribute similar or larger ion heat fluxes at lower collisionality. Beam emission spectroscopy and Doppler backscattering measurements in the steep gradient region of the H-mode pedestal reveal increased broadband, long-wavelength ion scale fluctuations for the low $$v^*_i$$ discharges at the radius where the non-linear CGYRO simulations were run. Taken together, increased fluctuations, power balance calculations, and gyrokinetic simulations show that the above neoclassical ion heat fluxes, including the increases at lower $$v^*_i$$, are likely due to weakly suppressed ion scale electrostatic turbulence. These new results are based on world first inferred ion and electron heat fluxes in the pedestal region of deuterium plasmas using direct measurements of the deuterium temperature for power balance across ion collisionalities covering an order of magnitude from high $$v^*_i$$ values of 1.3 down to ITER relevant $$v^*_i$$ ~0.1.

Authors:

^[1];

^[2];

^[3];

^[1];

^[3];

^[2];

^[3];

^[1];

^[3];

^[1];

^[3];

^[1];

^[4];

^[3];

^[4];

^[3]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
University of California, Los Angeles, CA (United States)
General Atomics, San Diego, CA (United States)
University of Wisconsin, Madison, WI (United States)

Publication Date:: Wed Jan 19 00:00:00 EST 2022

Research Org.:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States); General Atomics, San Diego, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1856194

Alternate Identifier(s):: OSTI ID: 1841036; OSTI ID: 1884313

Report Number(s):: A29615
Journal ID: ISSN 1070-664X; TRN: US2305107

Grant/Contract Number:: FC02-04ER54698; AC02-09CH11466; SC0019352; FG02-08ER54999; FG02-95ER54309; SC0019302

Resource Type:: Accepted Manuscript

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 29; Journal Issue: 1; Journal ID: ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; plasma confinement; emission spectroscopy; tokamaks; plasma instabilities; cryokinetic simulations; thermal transport

Citation Formats


                    Haskey, S. R., Ashourvan, Arash, Banerjee, S., Barada, K., Belli, E. A., Bortolon, A., Candy, J., Chen, J., Chrystal, C., Grierson, B. A., Groebner, R. J., Laggner, F. M., Knolker, M., Kramer, G. J., Major, M. R., Mckee, G., Staebler, G. M., Yan, Z., and Van Zeeland, M. A. Ion thermal transport in the H-mode edge transport barrier on DIII-D.  United States: N. p., 2022. 
Web.  doi:10.1063/5.0072155.

Copy to clipboard


                    Haskey, S. R., Ashourvan, Arash, Banerjee, S., Barada, K., Belli, E. A., Bortolon, A., Candy, J., Chen, J., Chrystal, C., Grierson, B. A., Groebner, R. J., Laggner, F. M., Knolker, M., Kramer, G. J., Major, M. R., Mckee, G., Staebler, G. M., Yan, Z., & Van Zeeland, M. A. Ion thermal transport in the H-mode edge transport barrier on DIII-D.  United States.  https://doi.org/10.1063/5.0072155

Copy to clipboard


                    Haskey, S. R., Ashourvan, Arash, Banerjee, S., Barada, K., Belli, E. A., Bortolon, A., Candy, J., Chen, J., Chrystal, C., Grierson, B. A., Groebner, R. J., Laggner, F. M., Knolker, M., Kramer, G. J., Major, M. R., Mckee, G., Staebler, G. M., Yan, Z., and Van Zeeland, M. A. Wed .  
"Ion thermal transport in the H-mode edge transport barrier on DIII-D".  United States.  https://doi.org/10.1063/5.0072155.  https://www.osti.gov/servlets/purl/1856194.

Copy to clipboard


                    
@article{osti_1856194,

  title        = {Ion thermal transport in the H-mode edge transport barrier on DIII-D},

  author       = {Haskey, S. R. and Ashourvan, Arash and Banerjee, S. and Barada, K. and Belli, E. A. and Bortolon, A. and Candy, J. and Chen, J. and Chrystal, C. and Grierson, B. A. and Groebner, R. J. and Laggner, F. M. and Knolker, M. and Kramer, G. J. and Major, M. R. and Mckee, G. and Staebler, G. M. and Yan, Z. and Van Zeeland, M. A.},

  abstractNote = {The power balance ion heat flux in the pedestal region on DIII-D increases and becomes increasingly anomalous (above conventional neoclassical) in experiments with higher temperature and lower density pedestals where the ion collisionality ($v^*_i$) is lowered toward values expected on ITER. Direct measurements of the main-ion temperature are shown to be essential on DIII-D when calculating the ion heat flux due to differences between the temperature of $D^+$ and the more commonly measured $C^{6+}$ impurity ions approaching the separatrix. Neoclassical transport calculations from NEO and non-linear gyrokinetic calculations using CGYRO are consistent with these observations and show that while neoclassical transport plays an important role, the turbulent ion heat flux due to ion scale electrostatic turbulence is significant and can contribute similar or larger ion heat fluxes at lower collisionality. Beam emission spectroscopy and Doppler backscattering measurements in the steep gradient region of the H-mode pedestal reveal increased broadband, long-wavelength ion scale fluctuations for the low $v^*_i$ discharges at the radius where the non-linear CGYRO simulations were run. Taken together, increased fluctuations, power balance calculations, and gyrokinetic simulations show that the above neoclassical ion heat fluxes, including the increases at lower $v^*_i$, are likely due to weakly suppressed ion scale electrostatic turbulence. These new results are based on world first inferred ion and electron heat fluxes in the pedestal region of deuterium plasmas using direct measurements of the deuterium temperature for power balance across ion collisionalities covering an order of magnitude from high $v^*_i$ values of 1.3 down to ITER relevant $v^*_i$ ~0.1.},

  doi          = {10.1063/5.0072155},

  journal      = {Physics of Plasmas},

  number       = 1,

  volume       = 29,

  place        = {United States},

  year         = {Wed Jan 19 00:00:00 EST 2022},

  month        = {Wed Jan 19 00:00:00 EST 2022}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1063/5.0072155

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Inter-ELM pedestal localized fluctuations in tokamaks: Summary of multi-machine observations
journal, May 2019

Laggner, F. M.; Diallo, A.; Cavedon, M.
Nuclear Materials and Energy, Vol. 19
DOI: 10.1016/j.nme.2019.02.030

Impact of centrifugal drifts on ion turbulent transport
journal, March 2018

Belli, E. A.; Candy, J.
Physics of Plasmas, Vol. 25, Issue 3
DOI: 10.1063/1.5020298

Initial results of the high resolution edge Thomson scattering upgrade at DIII-D
journal, October 2012

Eldon, D.; Bray, B. D.; Deterly, T. M.
Review of Scientific Instruments, Vol. 83, Issue 10
DOI: 10.1063/1.4738656

Plasma fluctuation measurements in tokamaks using beam‐plasma interactions
journal, November 1990

Fonck, R. J.; Duperrex, P. A.; Paul, S. F.
Review of Scientific Instruments, Vol. 61, Issue 11
DOI: 10.1063/1.1141556

Improved edge charge exchange recombination spectroscopy in DIII-D
journal, August 2016

Chrystal, C.; Burrell, K. H.; Grierson, B. A.
Review of Scientific Instruments, Vol. 87, Issue 11
DOI: 10.1063/1.4958915

Improved kinetic neoclassical transport calculation for a low-collisionality QH-mode pedestal
journal, July 2016

Battaglia, D. J.; Burrell, K. H.; Chang, C. S.
Plasma Physics and Controlled Fusion, Vol. 58, Issue 8
DOI: 10.1088/0741-3335/58/8/085009

The role of radial particle flow on power balance in DIII-D
journal, December 1998

Porter, G. D.
Physics of Plasmas, Vol. 5, Issue 12
DOI: 10.1063/1.873169

NRL Plasma Formulary
report, January 2007

Huba, J. D.
DOI: 10.21236/ADA469421

OMFIT Tokamak Profile Data Fitting and Physics Analysis
journal, January 2018

Logan, N. C.; Grierson, B. A.; Haskey, S. R.
Fusion Science and Technology, Vol. 74, Issue 1-2
DOI: 10.1080/15361055.2017.1386943

A high-accuracy Eulerian gyrokinetic solver for collisional plasmas
journal, November 2016

Candy, J.; Belli, E. A.; Bravenec, R. V.
Journal of Computational Physics, Vol. 324
DOI: 10.1016/j.jcp.2016.07.039

A model of the saturation of coupled electron and ion scale gyrokinetic turbulence
journal, May 2017

Staebler, G. M.; Howard, N. T.; Candy, J.
Nuclear Fusion, Vol. 57, Issue 6
DOI: 10.1088/1741-4326/aa6bee

Parametrization of the Zeeman effect for hydrogen-like spectra in high-temperature plasmas
journal, June 2002

Blom, A.; Jup$eacute$n, C.
Plasma Physics and Controlled Fusion, Vol. 44, Issue 7
DOI: 10.1088/0741-3335/44/7/312

Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D
journal, September 2016

Haskey, S. R.; Grierson, B. A.; Burrell, K. H.
Review of Scientific Instruments, Vol. 87, Issue 11
DOI: 10.1063/1.4963148

Orchestrating TRANSP Simulations for Interpretative and Predictive Tokamak Modeling with OMFIT
journal, February 2018

Grierson, B. A.; Yuan, X.; Gorelenkova, M.
Fusion Science and Technology, Vol. 74, Issue 1-2
DOI: 10.1080/15361055.2017.1398585

Direct gyrokinetic comparison of pedestal transport in JET with carbon and ITER-like walls
journal, July 2019

Hatch, D. R.; Kotschenreuther, M.; Mahajan, S. M.
Nuclear Fusion, Vol. 59, Issue 8
DOI: 10.1088/1741-4326/ab25bd

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
DOI: 10.1063/1.2044587

Pedestal density fluctuation dynamics during the inter-ELM cycle in DIII-D
journal, May 2011

Yan, Z.; McKee, G. R.; Groebner, R. J.
Physics of Plasmas, Vol. 18, Issue 5
DOI: 10.1063/1.3590936

Demonstration of ITER operational scenarios on DIII-D
journal, June 2010

Doyle, E. J.; DeBoo, J. C.; Ferron, J. R.
Nuclear Fusion, Vol. 50, Issue 7
DOI: 10.1088/0029-5515/50/7/075005

Main ion and impurity edge profile evolution across the L- to H-mode transition on DIII-D
journal, August 2018

Haskey, S. R.; Grierson, B. A.; Chrystal, C.
Plasma Physics and Controlled Fusion, Vol. 60, Issue 10
DOI: 10.1088/1361-6587/aad702

Active spectroscopic measurements of the bulk deuterium properties in the DIII-D tokamak (invited)
journal, October 2012

Grierson, B. A.; Burrell, K. H.; Chrystal, C.
Review of Scientific Instruments, Vol. 83, Issue 10
DOI: 10.1063/1.4739239

Experimental evidence for the key role of the ion heat channel in the physics of the L–H transition
journal, May 2014

Ryter, F.; Barrera Orte, L.; Kurzan, B.
Nuclear Fusion, Vol. 54, Issue 8
DOI: 10.1088/0029-5515/54/8/083003

Turbulence imaging and applications using beam emission spectroscopy on DIII-D (invited)
journal, March 2003

McKee, G. R.; Fenzi, C.; Fonck, R. J.
Review of Scientific Instruments, Vol. 74, Issue 3
DOI: 10.1063/1.1535248

A novel, multichannel, comb-frequency Doppler backscatter system
journal, October 2010

Peebles, W. A.; Rhodes, T. L.; Hillesheim, J. C.
Review of Scientific Instruments, Vol. 81, Issue 10
DOI: 10.1063/1.3464266

Thermal transport analysis of the edge region in the low and high confinement stages of a DIII-D discharge
journal, January 2007

Stacey, W. M.; Groebner, R. J.
Physics of Plasmas, Vol. 14, Issue 1
DOI: 10.1063/1.2400593

Ion heat transport dynamics during edge localized mode cycles at ASDEX Upgrade
journal, January 2018

Viezzer, E.; Cavedon, M.; Fable, E.
Nuclear Fusion, Vol. 58, Issue 2
DOI: 10.1088/1741-4326/aaa22f

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
DOI: 10.1103/PhysRevLett.110.055003

Predicting the rotation profile in ITER
journal, January 2020

Chrystal, C.; Grierson, B. A.; Haskey, S. R.
Nuclear Fusion, Vol. 60, Issue 3
DOI: 10.1088/1741-4326/ab6434

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
DOI: 10.1063/1.872367

High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal
journal, September 2016

Grierson, B. A.; Burrell, K. H.; Chrystal, C.
Review of Scientific Instruments, Vol. 87, Issue 11
DOI: 10.1063/1.4960604

Testing the DIII-D co/counter off-axis neutral beam injected power and ability to balance injected torque
journal, October 2021

Grierson, B. A.; Van Zeeland, M. A.; Scoville, J. T.
Nuclear Fusion, Vol. 61, Issue 11
DOI: 10.1088/1741-4326/ac2872

The effect of ion orbit loss and X-loss on the interpretation of ion energy and particle transport in the DIII-D edge plasma
journal, October 2011

Stacey, Weston M.
Physics of Plasmas, Vol. 18, Issue 10
DOI: 10.1063/1.3640506

Progress in modelling fast-ion D-alpha spectra and neutral particle analyzer fluxes using FIDASIM
journal, August 2020

Geiger, B.; Stagner, L.; Heidbrink, W. W.
Plasma Physics and Controlled Fusion, Vol. 62, Issue 10
DOI: 10.1088/1361-6587/aba8d7

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
DOI: 10.1088/0029-5515/55/8/083008

High-accuracy characterization of the edge radial electric field at ASDEX Upgrade
journal, April 2013

Viezzer, E.; Pütterich, T.; Conway, G. D.
Nuclear Fusion, Vol. 53, Issue 5
DOI: 10.1088/0029-5515/53/5/053005

Linearized model collision operators for multiple ion species plasmas and gyrokinetic entropy balance equations
journal, November 2009

Sugama, H.; Watanabe, T. -H.; Nunami, M.
Physics of Plasmas, Vol. 16, Issue 11
DOI: 10.1063/1.3257907

Progress and challenges in understanding core transport in tokamaks in support to ITER operations
journal, December 2019

Mantica, P.; Angioni, C.; Bonanomi, N.
Plasma Physics and Controlled Fusion, Vol. 62, Issue 1
DOI: 10.1088/1361-6587/ab5ae1

Kinetic neoclassical transport in the H-mode pedestal
journal, July 2014

Battaglia, D. J.; Burrell, K. H.; Chang, C. S.
Physics of Plasmas, Vol. 21, Issue 7
DOI: 10.1063/1.4886803

Pedestal transport in H-mode plasmas for fusion gain
journal, April 2017

Kotschenreuther, M.; Hatch, D. R.; Mahajan, S.
Nuclear Fusion, Vol. 57, Issue 6
DOI: 10.1088/1741-4326/aa6416

Pedestal magnetic turbulence measurements in ELMy H-mode DIII-D plasmas by Faraday-effect polarimetry
journal, February 2021

Chen, J.; Brower, D. L.; Ding, W. X.
Physics of Plasmas, Vol. 28, Issue 2
DOI: 10.1063/5.0039154

Main-ion intrinsic toroidal rotation across the ITG/TEM boundary in DIII-D discharges during ohmic and electron cyclotron heating
journal, April 2019

Grierson, B. A.; Chrystal, C.; Haskey, S. R.
Physics of Plasmas, Vol. 26, Issue 4
DOI: 10.1063/1.5090505

Deuterium charge exchange recombination spectroscopy from the top of the pedestal to the scrape off layer in H-mode plasmas
journal, October 2017

Haskey, S. R.; Grierson, B. A.; Stagner, L.
Journal of Instrumentation, Vol. 12, Issue 10
DOI: 10.1088/1748-0221/12/10/C10013

Gyrokinetic analysis and simulation of pedestals to identify the culprits for energy losses using ‘fingerprints’
journal, July 2019

Kotschenreuther, M.; Liu, X.; Hatch, D. R.
Nuclear Fusion, Vol. 59, Issue 9
DOI: 10.1088/1741-4326/ab1fa2

Fiber optic two-color vibration compensated interferometer for plasma density measurements
journal, October 2006

Van Zeeland, M. A.; Boivin, R. L.; Carlstrom, T. N.
Review of Scientific Instruments, Vol. 77, Issue 10
DOI: 10.1063/1.2336437

Investigation of inter-ELM ion heat transport in the H-mode pedestal of ASDEX Upgrade plasmas
journal, October 2016

Viezzer, E.; Fable, E.; Cavedon, M.
Nuclear Fusion, Vol. 57, Issue 2
DOI: 10.1088/0029-5515/57/2/022020

The EPED pedestal model and edge localized mode-suppressed regimes: Studies of quiescent H-mode and development of a model for edge localized mode suppression via resonant magnetic perturbations
journal, May 2012

Snyder, P. B.; Osborne, T. H.; Burrell, K. H.
Physics of Plasmas, Vol. 19, Issue 5
DOI: 10.1063/1.3699623

Tractable flux-driven temperature, density, and rotation profile evolution with the quasilinear gyrokinetic transport model QuaLiKiz
journal, November 2017

Citrin, J.; Bourdelle, C.; Casson, F. J.
Plasma Physics and Controlled Fusion, Vol. 59, Issue 12
DOI: 10.1088/1361-6587/aa8aeb

A gyrokinetic perspective on the JET-ILW pedestal
journal, January 2017

Hatch, D. R.; Kotschenreuther, M.; Mahajan, S.
Nuclear Fusion, Vol. 57, Issue 3
DOI: 10.1088/1741-4326/aa51e1

Kinetic calculation of neoclassical transport including self-consistent electron and impurity dynamics
journal, July 2008

Belli, E. A.; Candy, J.
Plasma Physics and Controlled Fusion, Vol. 50, Issue 9
DOI: 10.1088/0741-3335/50/9/095010

Testing predictions of electron scale turbulent pedestal transport in two DIII-D ELMy H-modes
journal, April 2021

Guttenfelder, W.; Groebner, R. J.; Canik, J. M.
Nuclear Fusion, Vol. 61, Issue 5
DOI: 10.1088/1741-4326/abecc7

A Code that Simulates Fast-Ion D _α and Neutral Particle Measurements
journal, September 2011

Heidbrink, W. W.; Liu, D.; Luo, Y.
Communications in Computational Physics, Vol. 10, Issue 3
DOI: 10.4208/cicp.190810.080211a

Analysis of pedestal plasma transport
journal, May 2010

Callen, J. D.; Groebner, R. J.; Osborne, T. H.
Nuclear Fusion, Vol. 50, Issue 6
DOI: 10.1088/0029-5515/50/6/064004

Time-dependent experimental identification of inter-ELM microtearing modes in the tokamak edge on DIII-D
journal, October 2021

Nelson, A. O.; Laggner, F. M.; Diallo, A.
Nuclear Fusion, Vol. 61, Issue 11
DOI: 10.1088/1741-4326/ac27ca

Active spectroscopy measurements of the deuterium temperature, rotation, and density from the core to scrape off layer on the DIII-D tokamak (invited)
journal, October 2018

Haskey, S. R.; Grierson, B. A.; Stagner, L.
Review of Scientific Instruments, Vol. 89, Issue 10
DOI: 10.1063/1.5038349

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
DOI: 10.1063/1.2436852

New understanding of inter-ELM pedestal turbulence, transport, and gradient behavior in the DIII-D tokamak
journal, November 2021

Barada, K.; Rhodes, T. L.; Haskey, S. R.
Nuclear Fusion, Vol. 61, Issue 12
DOI: 10.1088/1741-4326/ac3020

Similar Records in DOE PAGES and OSTI.GOV collections:

Partnership for Edge Physics Simulation

Technical Report Kritz, Arnold H. ; Rafiq, Tariq

A major goal of our participation in the Edge Physics Simulation project has been to contribute to the understanding of the self-organization of tokamak turbulence fluctuations resulting in the formation of a staircase structure in the ion temperature. A second important goal is to demonstrate how small scale turbulence in plasmas self-organizes with dynamically driven quasi-stationary flow shear. These goals have been accomplished through the analyses of the statistical properties of XGC1 flux driven Gyrokinetic electrostatic ion temperature gradient (ITG) turbulence simulation data in which neutrals are included. The ITG turbulence data, and in particular fluctuation data, were obtained frommore »« less
https://doi.org/10.2172/1408504

Full Text Available
On the origin of the DIII-D L-H power threshold isotope effect

Journal Article Callahan, K. J. ; Schmitz, L. ; Carter, T. A. ; ... - Nuclear Fusion

The increased low to high confinement mode (L to H-mode) power thresholdmore »« less
https://doi.org/10.1088/1741-4326/acf86c
Energy transport analysis of NSTX plasmas with the TGLF turbulent and NEO neoclassical transport models

Journal Article Avdeeva, G. ; Thome, K. E. ; Smith, S. P. ; ... - Nuclear Fusion

This work presents a study of plasma transport at low aspect ratio on the National Spherical Torus Experiment tokamak, where the turbulent and neoclassical energy fluxes calculated by the quasilinear Trapped Gyro Landau Fluid (TGLF) model and the multi species drift-kinetic Neoclassical solver (NEO) are validated against experimental data. The turbulent energy transport of two plasma discharges, one in the L-mode confinement regime and another in the H-mode regime, is dominated by electrostatic drift-wave instabilities, while the ion heat transport has a significant neoclassical contribution. The data analysis workflow is described in detail to understand how the variations of mapping and fitting of experimental data affect the power balance solution and subsequent flux-matching plasma profile predictions with the TGYRO solver. On average, the predicted plasma profiles are consistent with experimental data. However, the solutions are sensitive to various input parameters, including boundary conditions, and the electron-ion coupling. Linear gyrokinetic stability analysis demonstrates close agreement of the real frequencies of unstable modes between TGLF and CGYRO gyrokinetic simulations, but higher growth rates are predicted by TGLF, especially for the H-mode case. Estimates of the low-k modes' contributions to the total flux are consistent with linear stability analysis and the E × B suppression of turbulence in TGLF simulations with the SAT1 saturation model, while the SAT2 saturation model over-predicts the low-k modes' contribution in the H-mode case. Moreover, the results with SAT1 model are consistent with power balance analysis, which indicates only neoclassical ion energy fluxes inside ρ < 0.4 in the L-mode case andmore »« less
https://doi.org/10.1088/1741-4326/acfc56

Full Text Available
The role of ion and electron-scale turbulence in setting heat and particle transport in the DIII-D ITER baseline scenario

Journal Article Howard, N. T. ; Holland, C. ; Rhodes, T. L. ; ... - Nuclear Fusion

In this work, the heat and particle transport in a DIII-D ITER Baseline Scenario (IBS) discharge has been investigated using both linear and nonlinear gyrokinetic simulations performed with the CGYRO code [J. Candy et al: Journal Comp. Phys. (2016)].These simulations were used to investigate the role that ion-scale (more »« less
https://doi.org/10.1088/1741-4326/ac1bc2

Full Text Available
Dependence of the impurity transport on the dominant turbulent regime in ELM-y H-mode discharges on the DIII-D tokamak

Journal Article Odstrčil, T. ; Howard, N. T. ; Sciortino, F. ; ... - Physics of Plasmas

Laser blow-off injections of aluminum and tungsten have been performed on the DIII-D tokamak to investigate the variation of impurity transport in a set of dedicated ion and electron heating scans with a fixed value of the external torque. The particle transport is quantified via the Bayesian inference method, which, constrained by a combination of a charge exchange recombination spectroscopy, soft X-ray measurements, and VUV spectroscopy provides a detailed uncertainty quantification of transport coefficients. Contrasting discharge phases with a dominant electron and ion heating reveal 3-fold drop in the impurity confinement time and order of magnitude increase in midradius impuritymore »« less
Cited by 21
https://doi.org/10.1063/5.0010725

Full Text Available

Similar Records

Title: Ion thermal transport in the H-mode edge transport barrier on DIII-D

Abstract

Citation Formats

Inter-ELM pedestal localized fluctuations in tokamaks: Summary of multi-machine observations journal, May 2019

Impact of centrifugal drifts on ion turbulent transport journal, March 2018

Initial results of the high resolution edge Thomson scattering upgrade at DIII-D journal, October 2012

Plasma fluctuation measurements in tokamaks using beam‐plasma interactions journal, November 1990

Improved edge charge exchange recombination spectroscopy in DIII-D journal, August 2016

Improved kinetic neoclassical transport calculation for a low-collisionality QH-mode pedestal journal, July 2016

The role of radial particle flow on power balance in DIII-D journal, December 1998

NRL Plasma Formulary report, January 2007

OMFIT Tokamak Profile Data Fitting and Physics Analysis journal, January 2018

A high-accuracy Eulerian gyrokinetic solver for collisional plasmas journal, November 2016

A model of the saturation of coupled electron and ion scale gyrokinetic turbulence journal, May 2017

Parametrization of the Zeeman effect for hydrogen-like spectra in high-temperature plasmas journal, June 2002

Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D journal, September 2016

Orchestrating TRANSP Simulations for Interpretative and Predictive Tokamak Modeling with OMFIT journal, February 2018

Direct gyrokinetic comparison of pedestal transport in JET with carbon and ITER-like walls journal, July 2019

Gyro-Landau fluid equations for trapped and passing particles journal, October 2005

Pedestal density fluctuation dynamics during the inter-ELM cycle in DIII-D journal, May 2011

Demonstration of ITER operational scenarios on DIII-D journal, June 2010

Main ion and impurity edge profile evolution across the L- to H-mode transition on DIII-D journal, August 2018

Active spectroscopic measurements of the bulk deuterium properties in the DIII-D tokamak (invited) journal, October 2012

Experimental evidence for the key role of the ion heat channel in the physics of the L–H transition journal, May 2014

Turbulence imaging and applications using beam emission spectroscopy on DIII-D (invited) journal, March 2003

A novel, multichannel, comb-frequency Doppler backscatter system journal, October 2010

Thermal transport analysis of the edge region in the low and high confinement stages of a DIII-D discharge journal, January 2007

Ion heat transport dynamics during edge localized mode cycles at ASDEX Upgrade journal, January 2018

New Paradigm for Suppression of Gyrokinetic Turbulence by Velocity Shear journal, January 2013

Predicting the rotation profile in ITER journal, January 2020

Effects of E×B velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices journal, May 1997

High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal journal, September 2016

Testing the DIII-D co/counter off-axis neutral beam injected power and ability to balance injected torque journal, October 2021

The effect of ion orbit loss and X-loss on the interpretation of ion energy and particle transport in the DIII-D edge plasma journal, October 2011

Progress in modelling fast-ion D-alpha spectra and neutral particle analyzer fluxes using FIDASIM journal, August 2020

Integrated modeling applications for tokamak experiments with OMFIT journal, July 2015

High-accuracy characterization of the edge radial electric field at ASDEX Upgrade journal, April 2013

Linearized model collision operators for multiple ion species plasmas and gyrokinetic entropy balance equations journal, November 2009

Progress and challenges in understanding core transport in tokamaks in support to ITER operations journal, December 2019

Kinetic neoclassical transport in the H-mode pedestal journal, July 2014

Pedestal transport in H-mode plasmas for fusion gain journal, April 2017

Pedestal magnetic turbulence measurements in ELMy H-mode DIII-D plasmas by Faraday-effect polarimetry journal, February 2021

Main-ion intrinsic toroidal rotation across the ITG/TEM boundary in DIII-D discharges during ohmic and electron cyclotron heating journal, April 2019

Deuterium charge exchange recombination spectroscopy from the top of the pedestal to the scrape off layer in H-mode plasmas journal, October 2017

Gyrokinetic analysis and simulation of pedestals to identify the culprits for energy losses using ‘fingerprints’ journal, July 2019

Fiber optic two-color vibration compensated interferometer for plasma density measurements journal, October 2006

Investigation of inter-ELM ion heat transport in the H-mode pedestal of ASDEX Upgrade plasmas journal, October 2016

The EPED pedestal model and edge localized mode-suppressed regimes: Studies of quiescent H-mode and development of a model for edge localized mode suppression via resonant magnetic perturbations journal, May 2012

Tractable flux-driven temperature, density, and rotation profile evolution with the quasilinear gyrokinetic transport model QuaLiKiz journal, November 2017

A gyrokinetic perspective on the JET-ILW pedestal journal, January 2017

Kinetic calculation of neoclassical transport including self-consistent electron and impurity dynamics journal, July 2008

Testing predictions of electron scale turbulent pedestal transport in two DIII-D ELMy H-modes journal, April 2021

A Code that Simulates Fast-Ion D α and Neutral Particle Measurements journal, September 2011

Analysis of pedestal plasma transport journal, May 2010

Time-dependent experimental identification of inter-ELM microtearing modes in the tokamak edge on DIII-D journal, October 2021

Active spectroscopy measurements of the deuterium temperature, rotation, and density from the core to scrape off layer on the DIII-D tokamak (invited) journal, October 2018

A theory-based transport model with comprehensive physics journal, May 2007

New understanding of inter-ELM pedestal turbulence, transport, and gradient behavior in the DIII-D tokamak journal, November 2021

Inter-ELM pedestal localized fluctuations in tokamaks: Summary of multi-machine observations
journal, May 2019

Impact of centrifugal drifts on ion turbulent transport
journal, March 2018

Initial results of the high resolution edge Thomson scattering upgrade at DIII-D
journal, October 2012

Plasma fluctuation measurements in tokamaks using beam‐plasma interactions
journal, November 1990

Improved edge charge exchange recombination spectroscopy in DIII-D
journal, August 2016

Improved kinetic neoclassical transport calculation for a low-collisionality QH-mode pedestal
journal, July 2016

The role of radial particle flow on power balance in DIII-D
journal, December 1998

NRL Plasma Formulary
report, January 2007

OMFIT Tokamak Profile Data Fitting and Physics Analysis
journal, January 2018

A high-accuracy Eulerian gyrokinetic solver for collisional plasmas
journal, November 2016

A model of the saturation of coupled electron and ion scale gyrokinetic turbulence
journal, May 2017

Parametrization of the Zeeman effect for hydrogen-like spectra in high-temperature plasmas
journal, June 2002

Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D
journal, September 2016

Orchestrating TRANSP Simulations for Interpretative and Predictive Tokamak Modeling with OMFIT
journal, February 2018

Direct gyrokinetic comparison of pedestal transport in JET with carbon and ITER-like walls
journal, July 2019

Gyro-Landau fluid equations for trapped and passing particles
journal, October 2005

Pedestal density fluctuation dynamics during the inter-ELM cycle in DIII-D
journal, May 2011

Demonstration of ITER operational scenarios on DIII-D
journal, June 2010

Main ion and impurity edge profile evolution across the L- to H-mode transition on DIII-D
journal, August 2018

Active spectroscopic measurements of the bulk deuterium properties in the DIII-D tokamak (invited)
journal, October 2012

Experimental evidence for the key role of the ion heat channel in the physics of the L–H transition
journal, May 2014

Turbulence imaging and applications using beam emission spectroscopy on DIII-D (invited)
journal, March 2003

A novel, multichannel, comb-frequency Doppler backscatter system
journal, October 2010

Thermal transport analysis of the edge region in the low and high confinement stages of a DIII-D discharge
journal, January 2007

Ion heat transport dynamics during edge localized mode cycles at ASDEX Upgrade
journal, January 2018

New Paradigm for Suppression of Gyrokinetic Turbulence by Velocity Shear
journal, January 2013

Predicting the rotation profile in ITER
journal, January 2020

Effects of E×B velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices
journal, May 1997

High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal
journal, September 2016

Testing the DIII-D co/counter off-axis neutral beam injected power and ability to balance injected torque
journal, October 2021

The effect of ion orbit loss and X-loss on the interpretation of ion energy and particle transport in the DIII-D edge plasma
journal, October 2011

Progress in modelling fast-ion D-alpha spectra and neutral particle analyzer fluxes using FIDASIM
journal, August 2020

Integrated modeling applications for tokamak experiments with OMFIT
journal, July 2015

High-accuracy characterization of the edge radial electric field at ASDEX Upgrade
journal, April 2013

Linearized model collision operators for multiple ion species plasmas and gyrokinetic entropy balance equations
journal, November 2009

Progress and challenges in understanding core transport in tokamaks in support to ITER operations
journal, December 2019

Kinetic neoclassical transport in the H-mode pedestal
journal, July 2014

Pedestal transport in H-mode plasmas for fusion gain
journal, April 2017

Pedestal magnetic turbulence measurements in ELMy H-mode DIII-D plasmas by Faraday-effect polarimetry
journal, February 2021

Main-ion intrinsic toroidal rotation across the ITG/TEM boundary in DIII-D discharges during ohmic and electron cyclotron heating
journal, April 2019

Deuterium charge exchange recombination spectroscopy from the top of the pedestal to the scrape off layer in H-mode plasmas
journal, October 2017

Gyrokinetic analysis and simulation of pedestals to identify the culprits for energy losses using ‘fingerprints’
journal, July 2019

Fiber optic two-color vibration compensated interferometer for plasma density measurements
journal, October 2006

Investigation of inter-ELM ion heat transport in the H-mode pedestal of ASDEX Upgrade plasmas
journal, October 2016

The EPED pedestal model and edge localized mode-suppressed regimes: Studies of quiescent H-mode and development of a model for edge localized mode suppression via resonant magnetic perturbations
journal, May 2012

Tractable flux-driven temperature, density, and rotation profile evolution with the quasilinear gyrokinetic transport model QuaLiKiz
journal, November 2017

A gyrokinetic perspective on the JET-ILW pedestal
journal, January 2017

Kinetic calculation of neoclassical transport including self-consistent electron and impurity dynamics
journal, July 2008

Testing predictions of electron scale turbulent pedestal transport in two DIII-D ELMy H-modes
journal, April 2021

A Code that Simulates Fast-Ion D _α and Neutral Particle Measurements
journal, September 2011

Analysis of pedestal plasma transport
journal, May 2010

Time-dependent experimental identification of inter-ELM microtearing modes in the tokamak edge on DIII-D
journal, October 2021

Active spectroscopy measurements of the deuterium temperature, rotation, and density from the core to scrape off layer on the DIII-D tokamak (invited)
journal, October 2018

A theory-based transport model with comprehensive physics
journal, May 2007

New understanding of inter-ELM pedestal turbulence, transport, and gradient behavior in the DIII-D tokamak
journal, November 2021