Neoclassical transport due to resonant magnetic perturbations in DIII-D

Sinha, Priyanjana; Ferraro, Nathaniel M.; Belli, Emily A.

doi:10.1088/1741-4326/ac948b

Title: Neoclassical transport due to resonant magnetic perturbations in DIII-D

Abstract

In this work, the role of neoclassical physics in the particle and energy transport during the application of resonant magnetic perturbations (RMPs) to suppress the edge localised modes in a tokamak is analysed. The neoclassical fluxes in non-axisymmetric DIII-D equilibria with applied RMPs are calculated using the NEO code. The magnetic field provided to NEO as an input is calculated using M3D-C1 and includes the nonlinear one-fluid plasma response. Neoclassical fluxes obtained in this study are found to dramatically increase in the presence of applied resonant magnetic perturbations, and are in same range as the total radial particle fluxes calculated in comparable RMP discharges in DIII-D. This suggests that neoclassical transport plays a significant role in edge transport when RMPs are present. An increase in neoclassical fluxes during the ELM suppressed phase in DIII-D plasmas is calculated and is strongly correlated with the observation of density pump-out in the experiment.

Authors:

^[1];

^[2]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
General Atomics, San Diego, CA (United States)

Publication Date:: Mon Oct 17 00:00:00 EDT 2022

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

Sponsoring Org.:: USDOE

OSTI Identifier:: 1889243

Grant/Contract Number:: AC02-09CH11466; FG02-95ER54309

Resource Type:: Accepted Manuscript

Journal Name:: Nuclear Fusion

Additional Journal Information:: Journal Volume: 62; Journal Issue: 12; Journal ID: ISSN 0029-5515

Publisher:: IOP Science

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats


                    Sinha, Priyanjana, Ferraro, Nathaniel M., and Belli, Emily A. Neoclassical transport due to resonant magnetic perturbations in DIII-D.  United States: N. p., 2022. 
Web.  doi:10.1088/1741-4326/ac948b.

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                    Sinha, Priyanjana, Ferraro, Nathaniel M., & Belli, Emily A. Neoclassical transport due to resonant magnetic perturbations in DIII-D.  United States.  https://doi.org/10.1088/1741-4326/ac948b

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                    Sinha, Priyanjana, Ferraro, Nathaniel M., and Belli, Emily A. Mon .  
"Neoclassical transport due to resonant magnetic perturbations in DIII-D".  United States.  https://doi.org/10.1088/1741-4326/ac948b.  https://www.osti.gov/servlets/purl/1889243.

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@article{osti_1889243,

  title        = {Neoclassical transport due to resonant magnetic perturbations in DIII-D},

  author       = {Sinha, Priyanjana and Ferraro, Nathaniel M. and Belli, Emily A.},

  abstractNote = {In this work, the role of neoclassical physics in the particle and energy transport during the application of resonant magnetic perturbations (RMPs) to suppress the edge localised modes in a tokamak is analysed. The neoclassical fluxes in non-axisymmetric DIII-D equilibria with applied RMPs are calculated using the NEO code. The magnetic field provided to NEO as an input is calculated using M3D-C1 and includes the nonlinear one-fluid plasma response. Neoclassical fluxes obtained in this study are found to dramatically increase in the presence of applied resonant magnetic perturbations, and are in same range as the total radial particle fluxes calculated in comparable RMP discharges in DIII-D. This suggests that neoclassical transport plays a significant role in edge transport when RMPs are present. An increase in neoclassical fluxes during the ELM suppressed phase in DIII-D plasmas is calculated and is strongly correlated with the observation of density pump-out in the experiment.},

  doi          = {10.1088/1741-4326/ac948b},

  journal      = {Nuclear Fusion},

  number       = 12,

  volume       = 62,

  place        = {United States},

  year         = {Mon Oct 17 00:00:00 EDT 2022},

  month        = {Mon Oct 17 00:00:00 EDT 2022}

}

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Title: Neoclassical transport due to resonant magnetic perturbations in DIII-D

Abstract

Citation Formats

The effect of resonant magnetic perturbations on the divertor heat and particle fluxes in MAST journal, May 2014

Non-diffusive transport in the tokamak edge pedestal journal, October 2012

The M3D- C 1 approach to simulating 3D 2-fluid magnetohydrodynamics in magnetic fusion experiments journal, July 2008

The density dependence of edge-localized-mode suppression and pump-out by resonant magnetic perturbations in the DIII-D tokamak journal, December 2019

Non-axisymmetric local magnetostatic equilibrium journal, March 2015

Investigation of RMP induced density pump-out on EAST journal, October 2018

Toroidal flow and radial particle flux in tokamak plasmas journal, August 2009

A high-order implicit finite element method for integrating the two-fluid magnetohydrodynamic equations in two dimensions journal, October 2007

Suppression of type-I ELMs with reduced RMP coil set on DIII-D journal, February 2016

The energy confinement response of DIII-D plasmas to resonant magnetic perturbations journal, August 2017

Gyrokinetic understanding of the edge pedestal transport driven by resonant magnetic perturbations in a realistic divertor geometry journal, June 2020

Vorticity and intrinsic ambipolarity in turbulent tokamaks journal, August 2009

Model of L to H -Mode Transition in Tokamak journal, May 1988

Advances in the physics understanding of ELM suppression using resonant magnetic perturbations in DIII-D journal, January 2015

An emerging understanding of H‐mode discharges in tokamaks * journal, July 1993

A design retrospective of the DIII-D tokamak journal, May 2002

Role of 3D neoclassical particle flux in density pump-out during ELM control by RMP in DIII-D journal, February 2020

Validation of the model for ELM suppression with 3D magnetic fields using low torque ITER baseline scenario discharges in DIII-D journal, October 2017

Role of plasma response in displacements of the tokamak edge due to applied non-axisymmetric fields journal, June 2013

Theory of edge localized mode suppression by static resonant magnetic perturbations in the DIII-D tokamak journal, April 2020

Edge localized modes control by resonant magnetic perturbations journal, June 2007

RMP ELM suppression in DIII-D plasmas with ITER similar shapes and collisionalities journal, January 2008

Evidence of Toroidally Localized Turbulence with Applied 3D Fields in the DIII-D Tokamak journal, September 2016

Changes in particle transport as a result of resonant magnetic perturbations in DIII-D journal, May 2012

3D two-temperature magnetohydrodynamic modeling of fast thermal quenches due to injected impurities in tokamaks journal, November 2018

Magnetic-flutter-induced pedestal plasma transport journal, September 2013

Neoclassical transport in toroidal plasmas with nonaxisymmetric flux surfaces journal, April 2015

Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas journal, May 2006

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Calculations of two-fluid magnetohydrodynamic axisymmetric steady-states journal, November 2009

Experimental comparison of recycling and pumping changes during resonant magnetic perturbation experiments at low and high collisionality in DIII-D journal, June 2009

Effect of resonant magnetic perturbations on microturbulence in DIII-D pedestal journal, October 2016

ELM suppression in low edge collisionality H-mode discharges using n = 3 magnetic perturbations journal, November 2005

Stellarators close to quasisymmetry journal, November 2013

Observation of a Multimode Plasma Response and its Relationship to Density Pumpout and Edge-Localized Mode Suppression journal, March 2015

Full linearized Fokker–Planck collisions in neoclassical transport simulations journal, December 2011

A triangular finite element with first-derivative continuity applied to fusion MHD applications journal, October 2004

The effect of resonant magnetic perturbations on the divertor heat and particle fluxes in MAST
journal, May 2014

Non-diffusive transport in the tokamak edge pedestal
journal, October 2012

The M3D- C ¹ approach to simulating 3D 2-fluid magnetohydrodynamics in magnetic fusion experiments
journal, July 2008

The density dependence of edge-localized-mode suppression and pump-out by resonant magnetic perturbations in the DIII-D tokamak
journal, December 2019

Non-axisymmetric local magnetostatic equilibrium
journal, March 2015

Investigation of RMP induced density pump-out on EAST
journal, October 2018

Toroidal flow and radial particle flux in tokamak plasmas
journal, August 2009

A high-order implicit finite element method for integrating the two-fluid magnetohydrodynamic equations in two dimensions
journal, October 2007

Suppression of type-I ELMs with reduced RMP coil set on DIII-D
journal, February 2016

The energy confinement response of DIII-D plasmas to resonant magnetic perturbations
journal, August 2017

Gyrokinetic understanding of the edge pedestal transport driven by resonant magnetic perturbations in a realistic divertor geometry
journal, June 2020

Vorticity and intrinsic ambipolarity in turbulent tokamaks
journal, August 2009

Model of $L$ to $H$ -Mode Transition in Tokamak
journal, May 1988

Advances in the physics understanding of ELM suppression using resonant magnetic perturbations in DIII-D
journal, January 2015

An emerging understanding of H‐mode discharges in tokamaks ^*
journal, July 1993

A design retrospective of the DIII-D tokamak
journal, May 2002

Role of 3D neoclassical particle flux in density pump-out during ELM control by RMP in DIII-D
journal, February 2020

Validation of the model for ELM suppression with 3D magnetic fields using low torque ITER baseline scenario discharges in DIII-D
journal, October 2017

Role of plasma response in displacements of the tokamak edge due to applied non-axisymmetric fields
journal, June 2013

Theory of edge localized mode suppression by static resonant magnetic perturbations in the DIII-D tokamak
journal, April 2020

Edge localized modes control by resonant magnetic perturbations
journal, June 2007

RMP ELM suppression in DIII-D plasmas with ITER similar shapes and collisionalities
journal, January 2008

Evidence of Toroidally Localized Turbulence with Applied 3D Fields in the DIII-D Tokamak
journal, September 2016

Changes in particle transport as a result of resonant magnetic perturbations in DIII-D
journal, May 2012

3D two-temperature magnetohydrodynamic modeling of fast thermal quenches due to injected impurities in tokamaks
journal, November 2018

Magnetic-flutter-induced pedestal plasma transport
journal, September 2013

Neoclassical transport in toroidal plasmas with nonaxisymmetric flux surfaces
journal, April 2015

Edge stability and transport control with resonant magnetic perturbations in collisionless tokamak plasmas
journal, May 2006

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

Calculations of two-fluid magnetohydrodynamic axisymmetric steady-states
journal, November 2009

Experimental comparison of recycling and pumping changes during resonant magnetic perturbation experiments at low and high collisionality in DIII-D
journal, June 2009

Effect of resonant magnetic perturbations on microturbulence in DIII-D pedestal
journal, October 2016

ELM suppression in low edge collisionality H-mode discharges using n = 3 magnetic perturbations
journal, November 2005

Stellarators close to quasisymmetry
journal, November 2013

Observation of a Multimode Plasma Response and its Relationship to Density Pumpout and Edge-Localized Mode Suppression
journal, March 2015

Full linearized Fokker–Planck collisions in neoclassical transport simulations
journal, December 2011

A triangular finite element with first-derivative continuity applied to fusion MHD applications
journal, October 2004