Edge localized mode control with an edge resonant magnetic perturbation

R. A. Moyer; T. E. Evans; T. H. Osborne; P. R. Thomas; M. Becoulet; J. Harris; K. H. Finken; J. A. Boedo; E. J. Doyle; M. E. Fenstermacher; P. Gohil; R. J. Groebner; M. Groth; G. L. Jackson; R. J. La Haye; C. J. Lasnier; A. W. Leonard; G. R. McKee; H. Reimerdes; T. L. Rhodes; D. L. Rudakov; M. J. Schaffer; P. B. Snyder; M. R. Wade; G. Wang; J. G. Watkins; W. P. West; L. Zeng

doi:10.1063/1.1888705

Edge localized mode control with an edge resonant magnetic perturbation

R. A. Moyer, T. E. Evans, T. H. Osborne, P. R. Thomas, M. Becoulet, J. Harris, K. H. Finken, J. A. Boedo, E. J. Doyle, M. E. Fenstermacher, P. Gohil, R. J. Groebner, M. Groth, G. L. Jackson, R. J. La Haye, C. J. Lasnier, A. W. Leonard, G. R. McKee, H. Reimerdes, T. L. RhodesD. L. Rudakov, M. J. Schaffer, P. B. Snyder, M. R. Wade, G. Wang, J. G. Watkins, W. P. West, L. Zeng

Fusion and Fission Energy and Science Di

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Abstract

A low amplitude edge resonant magnetic field perturbation was used to suppress edge localized modes (ELM) with degrading core plasma confinement. The ELMs were replaced by packets of events with small amplitude, narrow radial extent, and a higher level of magnetic field and density fluctuations. It was found that changing the toroidal phase of the perturbation by 60° with respect to the best ELM suppression case reduces the EML amplitude and frequency by factors of 2-3 in the divertor. The results show that ELM can be suppressed by small edge resonant magnetic field perturbations.

Original language	English
Article number	056119
Pages (from-to)	1-11
Number of pages	11
Journal	Physics of Plasmas
Volume	12
Issue number	5
DOIs	https://doi.org/10.1063/1.1888705
State	Published - May 2005

Funding

This work was funded by the U.S. Department of Energy under Grant Nos. DE-FC02-04ER54698, DE-FG02-04ER54758, DE-FG03-01ER54615, W-7405-ENG-48, DE-FG03-96ER54373, DE-FG02-89ER53297, DE-AC05-00OR22725, and DE-AC04-94AL85000. The authors wish to thank the DIII-D Tokamak Operations Group for maintaining and operating the device for these experiments. In addition, they thank the respective foreign funding agencies for supporting participation by their international colleagues in these experiments.

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Moyer, R. A., Evans, T. E., Osborne, T. H., Thomas, P. R., Becoulet, M., Harris, J., Finken, K. H., Boedo, J. A., Doyle, E. J., Fenstermacher, M. E., Gohil, P., Groebner, R. J., Groth, M., Jackson, G. L., La Haye, R. J., Lasnier, C. J., Leonard, A. W., McKee, G. R., Reimerdes, H., ... Zeng, L. (2005). Edge localized mode control with an edge resonant magnetic perturbation. Physics of Plasmas, 12(5), 1-11. Article 056119. https://doi.org/10.1063/1.1888705

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title = "Edge localized mode control with an edge resonant magnetic perturbation",

abstract = "A low amplitude edge resonant magnetic field perturbation was used to suppress edge localized modes (ELM) with degrading core plasma confinement. The ELMs were replaced by packets of events with small amplitude, narrow radial extent, and a higher level of magnetic field and density fluctuations. It was found that changing the toroidal phase of the perturbation by 60° with respect to the best ELM suppression case reduces the EML amplitude and frequency by factors of 2-3 in the divertor. The results show that ELM can be suppressed by small edge resonant magnetic field perturbations.",

author = "Moyer, \{R. A.\} and Evans, \{T. E.\} and Osborne, \{T. H.\} and Thomas, \{P. R.\} and M. Becoulet and J. Harris and Finken, \{K. H.\} and Boedo, \{J. A.\} and Doyle, \{E. J.\} and Fenstermacher, \{M. E.\} and P. Gohil and Groebner, \{R. J.\} and M. Groth and Jackson, \{G. L.\} and \{La Haye\}, \{R. J.\} and Lasnier, \{C. J.\} and Leonard, \{A. W.\} and McKee, \{G. R.\} and H. Reimerdes and Rhodes, \{T. L.\} and Rudakov, \{D. L.\} and Schaffer, \{M. J.\} and Snyder, \{P. B.\} and Wade, \{M. R.\} and G. Wang and Watkins, \{J. G.\} and West, \{W. P.\} and L. Zeng",

year = "2005",

month = may,

doi = "10.1063/1.1888705",

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Moyer, RA, Evans, TE, Osborne, TH, Thomas, PR, Becoulet, M, Harris, J, Finken, KH, Boedo, JA, Doyle, EJ, Fenstermacher, ME, Gohil, P, Groebner, RJ, Groth, M, Jackson, GL, La Haye, RJ, Lasnier, CJ, Leonard, AW, McKee, GR, Reimerdes, H, Rhodes, TL, Rudakov, DL, Schaffer, MJ, Snyder, PB, Wade, MR, Wang, G, Watkins, JG, West, WP & Zeng, L 2005, 'Edge localized mode control with an edge resonant magnetic perturbation', Physics of Plasmas, vol. 12, no. 5, 056119, pp. 1-11. https://doi.org/10.1063/1.1888705

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T1 - Edge localized mode control with an edge resonant magnetic perturbation

AU - Moyer, R. A.

AU - Evans, T. E.

AU - Osborne, T. H.

AU - Thomas, P. R.

AU - Becoulet, M.

AU - Harris, J.

AU - Finken, K. H.

AU - Boedo, J. A.

AU - Doyle, E. J.

AU - Fenstermacher, M. E.

AU - Gohil, P.

AU - Groebner, R. J.

AU - Groth, M.

AU - Jackson, G. L.

AU - La Haye, R. J.

AU - Lasnier, C. J.

AU - Leonard, A. W.

AU - McKee, G. R.

AU - Reimerdes, H.

AU - Rhodes, T. L.

AU - Rudakov, D. L.

AU - Schaffer, M. J.

AU - Snyder, P. B.

AU - Wade, M. R.

AU - Wang, G.

AU - Watkins, J. G.

AU - West, W. P.

AU - Zeng, L.

PY - 2005/5

Y1 - 2005/5

N2 - A low amplitude edge resonant magnetic field perturbation was used to suppress edge localized modes (ELM) with degrading core plasma confinement. The ELMs were replaced by packets of events with small amplitude, narrow radial extent, and a higher level of magnetic field and density fluctuations. It was found that changing the toroidal phase of the perturbation by 60° with respect to the best ELM suppression case reduces the EML amplitude and frequency by factors of 2-3 in the divertor. The results show that ELM can be suppressed by small edge resonant magnetic field perturbations.

AB - A low amplitude edge resonant magnetic field perturbation was used to suppress edge localized modes (ELM) with degrading core plasma confinement. The ELMs were replaced by packets of events with small amplitude, narrow radial extent, and a higher level of magnetic field and density fluctuations. It was found that changing the toroidal phase of the perturbation by 60° with respect to the best ELM suppression case reduces the EML amplitude and frequency by factors of 2-3 in the divertor. The results show that ELM can be suppressed by small edge resonant magnetic field perturbations.

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EP - 11

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 5

M1 - 056119

ER -

Edge localized mode control with an edge resonant magnetic perturbation

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