The spectral basis of optimal error field correction on DIII-D
Abstract
Here, experimental optimum error field correction (EFC) currents found in a wide breadth of dedicated experiments on DIII-D are shown to be consistent with the currents required to null the poloidal harmonics of the vacuum field which drive the kink mode near the plasma edge. This allows the identification of empirical metrics which predict optimal EFC currents with accuracy comparable to that of first- principles modeling which includes the ideal plasma response. While further metric refinements are desirable, this work suggests optimal EFC currents can be effectively fed-forward based purely on knowledge of the vacuum error field and basic equilibrium properties which are routinely calculated in real-time.
- Authors:
-
- Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States)
- General Atomics, San Diego, CA (United States)
- Columbia Univ., New York, NY (United States)
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Publication Date:
- Research Org.:
- General Atomics, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1354748
- Grant/Contract Number:
- FC02-04ER54698
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nuclear Fusion
- Additional Journal Information:
- Journal Volume: 54; Journal Issue: 7; Journal ID: ISSN 0029-5515
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; error field correction; plasma response; resistive wall mode; kink mode; tokamak
Citation Formats
Paz-Soldan, Carlos A., Buttery, Richard J., Garofalo, Andrea M., Hanson, Jeremy M., La Haye, Robert J., Lanctot, Matthew J., Park, Jong -Ku, Solomon, Wayne M., and Strait, Edward J. The spectral basis of optimal error field correction on DIII-D. United States: N. p., 2014.
Web. doi:10.1088/0029-5515/54/7/073013.
Paz-Soldan, Carlos A., Buttery, Richard J., Garofalo, Andrea M., Hanson, Jeremy M., La Haye, Robert J., Lanctot, Matthew J., Park, Jong -Ku, Solomon, Wayne M., & Strait, Edward J. The spectral basis of optimal error field correction on DIII-D. United States. https://doi.org/10.1088/0029-5515/54/7/073013
Paz-Soldan, Carlos A., Buttery, Richard J., Garofalo, Andrea M., Hanson, Jeremy M., La Haye, Robert J., Lanctot, Matthew J., Park, Jong -Ku, Solomon, Wayne M., and Strait, Edward J. Mon .
"The spectral basis of optimal error field correction on DIII-D". United States. https://doi.org/10.1088/0029-5515/54/7/073013. https://www.osti.gov/servlets/purl/1354748.
@article{osti_1354748,
title = {The spectral basis of optimal error field correction on DIII-D},
author = {Paz-Soldan, Carlos A. and Buttery, Richard J. and Garofalo, Andrea M. and Hanson, Jeremy M. and La Haye, Robert J. and Lanctot, Matthew J. and Park, Jong -Ku and Solomon, Wayne M. and Strait, Edward J.},
abstractNote = {Here, experimental optimum error field correction (EFC) currents found in a wide breadth of dedicated experiments on DIII-D are shown to be consistent with the currents required to null the poloidal harmonics of the vacuum field which drive the kink mode near the plasma edge. This allows the identification of empirical metrics which predict optimal EFC currents with accuracy comparable to that of first- principles modeling which includes the ideal plasma response. While further metric refinements are desirable, this work suggests optimal EFC currents can be effectively fed-forward based purely on knowledge of the vacuum error field and basic equilibrium properties which are routinely calculated in real-time.},
doi = {10.1088/0029-5515/54/7/073013},
journal = {Nuclear Fusion},
number = 7,
volume = 54,
place = {United States},
year = {Mon Apr 28 00:00:00 EDT 2014},
month = {Mon Apr 28 00:00:00 EDT 2014}
}
Web of Science
Works referenced in this record:
Effect of resonant and non-resonant magnetic braking on error field tolerance in high beta plasmas
journal, September 2009
- Reimerdes, H.; Garofalo, A. M.; Strait, E. J.
- Nuclear Fusion, Vol. 49, Issue 11
Observation and correction of non-resonant error fields in NSTX
journal, September 2010
- Gerhardt, S. P.; Menard, J. E.; Park, J-K
- Plasma Physics and Controlled Fusion, Vol. 52, Issue 10
Interaction of tearing modes with external structures in cylindrical geometry (plasma)
journal, July 1993
- Fitzpatrick, R.
- Nuclear Fusion, Vol. 33, Issue 7
The impact of 3D fields on tearing mode stability of H-modes
journal, May 2011
- Buttery, R. J.; Gerhardt, S.; La Haye, R. J.
- Nuclear Fusion, Vol. 51, Issue 7
Fast-ion effects during test blanket module simulation experiments in DIII-D
journal, September 2011
- Kramer, G. J.; Budny, B. V.; Ellis, R.
- Nuclear Fusion, Vol. 51, Issue 10
Three-dimensional effects on energetic particle confinement and stability
journal, May 2011
- Spong, D. A.
- Physics of Plasmas, Vol. 18, Issue 5
ITER test blanket module error field simulation experiments at DIII-D
journal, September 2011
- Schaffer, M. J.; Snipes, J. A.; Gohil, P.
- Nuclear Fusion, Vol. 51, Issue 10
Analysis and correction of intrinsic non-axisymmetric magnetic fields in high- DIII-D plasmas
journal, October 2002
- Garofalo, A. M.; Haye, R. J. La; Scoville, J. T.
- Nuclear Fusion, Vol. 42, Issue 11
Error field detection in DIII-D by magnetic steering of locked modes
journal, February 2014
- Shiraki, D.; La Haye, R. J.; Logan, N. C.
- Nuclear Fusion, Vol. 54, Issue 3
Control of Asymmetric Magnetic Perturbations in Tokamaks
journal, November 2007
- Park, Jong-kyu; Schaffer, Michael J.; Menard, Jonathan E.
- Physical Review Letters, Vol. 99, Issue 19
Nonlinear error-field penetration in low density ohmically heated tokamak plasmas
journal, August 2012
- Fitzpatrick, R.
- Plasma Physics and Controlled Fusion, Vol. 54, Issue 9
Effect of Neoclassical Toroidal Viscosity on Error-Field Penetration Thresholds in Tokamak Plasmas
journal, August 2007
- Cole, A. J.; Hegna, C. C.; Callen, J. D.
- Physical Review Letters, Vol. 99, Issue 6
Progress in understanding error-field physics in NSTX spherical torus plasmas
journal, March 2010
- Menard, J. E.; Bell, R. E.; Gates, D. A.
- Nuclear Fusion, Vol. 50, Issue 4
The limits and challenges of error field correction for ITER
journal, May 2012
- Buttery, R. J.; Boozer, A. H.; Liu, Y. Q.
- Physics of Plasmas, Vol. 19, Issue 5
A design retrospective of the DIII-D tokamak
journal, May 2002
- Luxon, J. L.
- Nuclear Fusion, Vol. 42, Issue 5
A method to measure poloidal field coil irregularities in toroidal plasma devices
journal, September 1991
- La Haye, R. J.; Scoville, J. T.
- Review of Scientific Instruments, Vol. 62, Issue 9
Anomalies in the applied magnetic fields in DIII-D and their implications for the understanding of stability experiments
journal, December 2003
- Luxon, J. L.; Schaffer, M. J.; Jackson, G. L.
- Nuclear Fusion, Vol. 43, Issue 12
Study of in-vessel nonaxisymmetric ELM suppression coil concepts for ITER
journal, January 2008
- Schaffer, M. J.; Menard, J. E.; Aldan, M. P.
- Nuclear Fusion, Vol. 48, Issue 2
Computation of three-dimensional tokamak and spherical torus equilibria
journal, May 2007
- Park, Jong-kyu; Boozer, Allen H.; Glasser, Alan H.
- Physics of Plasmas, Vol. 14, Issue 5
Error field experiments in JET
journal, April 2000
- Buttery, R. J.; Benedetti, M. De'; Hender, T. C.
- Nuclear Fusion, Vol. 40, Issue 4
Multi-mode error field correction on the DIII-D tokamak
journal, March 2003
- Scoville, J. T.; Haye, R. J. La
- Nuclear Fusion, Vol. 43, Issue 4
Nonaxisymmetric field effects on Alcator C-Mod
journal, May 2005
- Wolfe, S. M.; Hutchinson, I. H.; Granetz, R. S.
- Physics of Plasmas, Vol. 12, Issue 5
Error Field Amplification and Rotation Damping in Tokamak Plasmas
journal, May 2001
- Boozer, Allen H.
- Physical Review Letters, Vol. 86, Issue 22
Asymmetric error field interaction with rotating conducting walls
journal, July 2012
- Paz-Soldan, C.; Brookhart, M. I.; Hegna, C. C.
- Physics of Plasmas, Vol. 19, Issue 7
Runaway electron drift orbits in magnetostatic perturbed fields
journal, March 2011
- Papp, G.; Drevlak, M.; Fülöp, T.
- Nuclear Fusion, Vol. 51, Issue 4
Symmetry-Breaking Induced Transport in the Vicinity of a Magnetic Island
journal, November 2001
- Shaing, K. C.
- Physical Review Letters, Vol. 87, Issue 24
Full toroidal plasma response to externally applied nonaxisymmetric magnetic fields
journal, December 2010
- Liu, Yueqiang; Kirk, A.; Nardon, E.
- Physics of Plasmas, Vol. 17, Issue 12
Effect of toroidal plasma flow and flow shear on global magnetohydrodynamic MHD modes
journal, June 1995
- Chu, M. S.; Greene, J. M.; Jensen, T. H.
- Physics of Plasmas, Vol. 2, Issue 6
Measurement and modeling of three-dimensional equilibria in DIII-D
journal, May 2011
- Lanctot, M. J.; Reimerdes, H.; Garofalo, A. M.
- Physics of Plasmas, Vol. 18, Issue 5
Sustained Stabilization of the Resistive-Wall Mode by Plasma Rotation in the DIII-D Tokamak
journal, November 2002
- Garofalo, A. M.; Strait, E. J.; Johnson, L. C.
- Physical Review Letters, Vol. 89, Issue 23
Validation of the linear ideal magnetohydrodynamic model of three-dimensional tokamak equilibria
journal, March 2010
- Lanctot, M. J.; Reimerdes, H.; Garofalo, A. M.
- Physics of Plasmas, Vol. 17, Issue 3
Semiquantitative analysis of feedback systems for resistive wall modes
journal, November 2002
- Garofalo, A. M.; Jensen, T. H.; Strait, E. J.
- Physics of Plasmas, Vol. 9, Issue 11
Access to high beta advanced inductive plasmas at low injected torque
journal, September 2013
- Solomon, W. M.; Politzer, P. A.; Buttery, R. J.
- Nuclear Fusion, Vol. 53, Issue 9
Works referencing / citing this record:
Experimental tests of linear and nonlinear three-dimensional equilibrium models in DIII-D
journal, July 2015
- King, J. D.; Strait, E. J.; Lazerson, S. A.
- Physics of Plasmas, Vol. 22, Issue 7
Modal analysis of the full poloidal structure of the plasma response to n = 2 magnetic perturbations
journal, July 2018
- Munaretto, S.; Strait, E. J.; Haskey, S. R.
- Physics of Plasmas, Vol. 25, Issue 7
Equilibrium drives of the low and high field side n = 2 plasma response and impact on global confinement
journal, April 2016
- Paz-Soldan, C.; Logan, N. C.; Haskey, S. R.
- Nuclear Fusion, Vol. 56, Issue 5
Magnetic polarization measurements of the multi-modal plasma response to 3D fields in the EAST tokamak
journal, May 2018
- Logan, N. C.; Cui, L.; Wang, H.
- Nuclear Fusion, Vol. 58, Issue 7
Fast and pervasive heat transport induced by multiple locked modes in DIII-D
journal, November 2018
- Hu, Q.; Du, X.; Yu, Q.
- Nuclear Fusion, Vol. 59, Issue 1
Assessment of equilibrium field coil misalignments on the divertor footprints in NSTX-U
journal, June 2019
- Munaretto, S.; Evans, T. E.; Ferraro, N. M.
- Nuclear Fusion, Vol. 59, Issue 7
Error field impact on mode locking and divertor heat flux in NSTX-U
journal, June 2019
- Ferraro, N. M.; Park, J. -K.; Myers, C. E.
- Nuclear Fusion, Vol. 59, Issue 8
L – H transition trigger physics in ITER-similar plasmas with applied n = 3 magnetic perturbations
journal, September 2019
- Schmitz, L.; Kriete, D. M.; Wilcox, R. S.
- Nuclear Fusion, Vol. 59, Issue 12
Observation of a Multimode Plasma Response and its Relationship to Density Pumpout and Edge-Localized Mode Suppression
journal, March 2015
- Paz-Soldan, C.; Nazikian, R.; Haskey, S. R.
- Physical Review Letters, Vol. 114, Issue 10