skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Identifying microturbulence regimes in a TCV discharge making use of physical constraints on particle and heat fluxes

Abstract

Reducing the uncertainty on physical input parameters derived from experimental measurements is essential towards improving the reliability of gyrokinetic turbulence simulations. This can be achieved by introducing physical constraints. Amongst them, the zero particle flux condition is considered here. A first attempt is also made to match as well the experimental ion/electron heat flux ratio. This procedure is applied to the analysis of a particular Tokamak à Configuration Variable discharge. A detailed reconstruction of the zero particle flux hyper-surface in the multi-dimensional physical parameter space at fixed time of the discharge is presented, including the effect of carbon as the main impurity. Both collisionless and collisional regimes are considered. Hyper-surface points within the experimental error bars are found. In conclusion, the analysis is done performing gyrokinetic simulations with the local version of the GENE code, computing the fluxes with a Quasi-Linear (QL) model and validating the QL results with non-linear simulations in a subset of cases.

Authors:
 [1];  [1];  [2];  [1];  [3]; ORCiD logo [1]; ORCiD logo [4];  [4]; ORCiD logo [4]
  1. Swiss Plasma Center, Lausanne (Switzerland)
  2. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  3. UCLA Physics and Astronomy, Los Angeles, CA (United States)
  4. Max-Planck-Institut fur Plasmaphysik, Garching (Germany)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1419797
Grant/Contract Number:  
AC02-09CH11466
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; Journal Issue: 1; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Mariani, Alberto, Brunner, S., Dominski, J., Merle, A., Merlo, G., Sauter, O., Gorler, T., Jenko, F., and Told, D. Identifying microturbulence regimes in a TCV discharge making use of physical constraints on particle and heat fluxes. United States: N. p., 2018. Web. doi:10.1063/1.5006408.
Mariani, Alberto, Brunner, S., Dominski, J., Merle, A., Merlo, G., Sauter, O., Gorler, T., Jenko, F., & Told, D. Identifying microturbulence regimes in a TCV discharge making use of physical constraints on particle and heat fluxes. United States. doi:10.1063/1.5006408.
Mariani, Alberto, Brunner, S., Dominski, J., Merle, A., Merlo, G., Sauter, O., Gorler, T., Jenko, F., and Told, D. Wed . "Identifying microturbulence regimes in a TCV discharge making use of physical constraints on particle and heat fluxes". United States. doi:10.1063/1.5006408. https://www.osti.gov/servlets/purl/1419797.
@article{osti_1419797,
title = {Identifying microturbulence regimes in a TCV discharge making use of physical constraints on particle and heat fluxes},
author = {Mariani, Alberto and Brunner, S. and Dominski, J. and Merle, A. and Merlo, G. and Sauter, O. and Gorler, T. and Jenko, F. and Told, D.},
abstractNote = {Reducing the uncertainty on physical input parameters derived from experimental measurements is essential towards improving the reliability of gyrokinetic turbulence simulations. This can be achieved by introducing physical constraints. Amongst them, the zero particle flux condition is considered here. A first attempt is also made to match as well the experimental ion/electron heat flux ratio. This procedure is applied to the analysis of a particular Tokamak à Configuration Variable discharge. A detailed reconstruction of the zero particle flux hyper-surface in the multi-dimensional physical parameter space at fixed time of the discharge is presented, including the effect of carbon as the main impurity. Both collisionless and collisional regimes are considered. Hyper-surface points within the experimental error bars are found. In conclusion, the analysis is done performing gyrokinetic simulations with the local version of the GENE code, computing the fluxes with a Quasi-Linear (QL) model and validating the QL results with non-linear simulations in a subset of cases.},
doi = {10.1063/1.5006408},
journal = {Physics of Plasmas},
number = 1,
volume = 25,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share:

Works referenced in this record:

Collisionality dependence of density peaking in quasilinear gyrokinetic calculations
journal, November 2005

  • Angioni, C.; Peeters, A. G.; Jenko, F.
  • Physics of Plasmas, Vol. 12, Issue 11
  • DOI: 10.1063/1.2135283

Observation of Spontaneous Toroidal Rotation Inversion in Ohmically Heated Tokamak Plasmas
journal, December 2006


Non-linear gyrokinetic simulations of microturbulence in TCV electron internal transport barriers
journal, April 2011


The role of ion and electron electrostatic turbulence in characterizing stationary particle transport in the core of tokamak plasmas
journal, December 2009


Self-Acceleration of a Tokamak Plasma during Ohmic H Mode
journal, April 2000


Bulk plasma rotation in the TCV tokamak in the absence of external momentum input
journal, November 2007


Validating a quasi-linear transport model versus nonlinear simulations
journal, July 2009


Spontaneous L-mode plasma rotation scaling in the TCV tokamak
journal, May 2008

  • Duval, B. P.; Bortolon, A.; Karpushov, A.
  • Physics of Plasmas, Vol. 15, Issue 5
  • DOI: 10.1063/1.2841528

Creation and control of variably shaped plasmas in TCV
journal, December 1994


On the non-stiffness of edge transport in L-mode tokamak plasmas
journal, May 2014

  • Sauter, O.; Brunner, S.; Kim, D.
  • Physics of Plasmas, Vol. 21, Issue 5
  • DOI: 10.1063/1.4876612

Electron temperature gradient driven turbulence
journal, May 2000

  • Jenko, F.; Dorland, W.; Kotschenreuther, M.
  • Physics of Plasmas, Vol. 7, Issue 5
  • DOI: 10.1063/1.874014

Gyrokinetic calculations of steady-state particle transport in electron internal transport barriers
journal, September 2008


The CHEASE code for toroidal MHD equilibria
journal, September 1996


Critical gradient formula for toroidal electron temperature gradient modes
journal, September 2001

  • Jenko, F.; Dorland, W.; Hammett, G. W.
  • Physics of Plasmas, Vol. 8, Issue 9
  • DOI: 10.1063/1.1391261

Particle pinch and collisionality in gyrokinetic simulations of tokamak plasma turbulence
journal, June 2009

  • Angioni, C.; Candy, J.; Fable, E.
  • Physics of Plasmas, Vol. 16, Issue 6
  • DOI: 10.1063/1.3155498

An overview of intrinsic torque and momentum transport bifurcations in toroidal plasmas
journal, September 2013


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
  • DOI: 10.1063/1.4795301

Heat and particle transport in a tokamak: advances in nonlinear gyrokinetics
journal, November 2005


Interplay between toroidal rotation and flow shear in turbulence stabilisation
journal, February 2016

  • Camenen, Y.; Casson, F. J.; Manas, P.
  • Physics of Plasmas, Vol. 23, Issue 2
  • DOI: 10.1063/1.4942422

Geometric formulas for system codes including the effect of negative triangularity
journal, November 2016


Nonlinear interplay of TEM and ITG turbulence and its effect on transport
journal, April 2010


Chapter 2: Plasma confinement and transport
journal, December 1999

  • Transport, ITER Physics Expert Group on Confin; Database, ITER Physics Expert Group on Confin; Editors, ITER Physics Basis
  • Nuclear Fusion, Vol. 39, Issue 12
  • DOI: 10.1088/0029-5515/39/12/302

The role of zonal flows in the saturation of multi-scale gyrokinetic turbulence
journal, June 2016

  • Staebler, G. M.; Candy, J.; Howard, N. T.
  • Physics of Plasmas, Vol. 23, Issue 6
  • DOI: 10.1063/1.4954905

Investigating profile stiffness and critical gradients in shaped TCV discharges using local gyrokinetic simulations of turbulent transport
journal, April 2015


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


Internal transport barriers in tokamak plasmas*
journal, November 2002


Gyrokinetic simulation of collisionless trapped-electron mode turbulence
journal, July 2005

  • Dannert, Tilman; Jenko, Frank
  • Physics of Plasmas, Vol. 12, Issue 7
  • DOI: 10.1063/1.1947447

System Size Effects on Gyrokinetic Turbulence
journal, October 2010


Numerical computation of collisionless drift wave turbulence
journal, June 1999

  • Jenko, Frank; Scott, Bruce D.
  • Physics of Plasmas, Vol. 6, Issue 6
  • DOI: 10.1063/1.873513

Suppression of turbulence and transport by sheared flow
journal, January 2000


Gyrokinetic modelling of stationary electron and impurity profiles in tokamaks
journal, September 2014

  • Skyman, A.; Tegnered, D.; Nordman, H.
  • Physics of Plasmas, Vol. 21, Issue 9
  • DOI: 10.1063/1.4894739