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Title: 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:
 [1];  [2];  [2];  [3];  [2];  [2];  [4];  [4];  [2]
  1. Oak Ridge Inst. for Science and Education (ORISE), Oak Ridge, TN (United States)
  2. General Atomics, San Diego, CA (United States)
  3. Columbia Univ., New York, NY (United States)
  4. 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}
}

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Cited by: 38 works
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Works referencing / citing this record:

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