Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary

T. E. Evans; R. A. Moyer; P. R. Thomas; J. G. Watkins; T. H. Osborne; J. A. Boedo; E. J. Doyle; M. E. Fenstermacher; K. H. Finken; R. J. Groebner; M. Groth; J. H. Harris; R. J. La Haye; C. J. Lasnier; S. Masuzaki; N. Ohyabu; D. G. Pretty; T. L. Rhodes; H. Reimerdes; D. L. Rudakov; M. J. Schaffer; G. Wang; L. Zeng

doi:10.1103/PhysRevLett.92.235003

Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary

T. E. Evans^*, R. A. Moyer, P. R. Thomas, J. G. Watkins, T. H. Osborne, J. A. Boedo, E. J. Doyle, M. E. Fenstermacher, K. H. Finken, R. J. Groebner, M. Groth, J. H. Harris, R. J. La Haye, C. J. Lasnier, S. Masuzaki, N. Ohyabu, D. G. Pretty, T. L. Rhodes, H. Reimerdes, D. L. RudakovM. J. Schaffer, G. Wang, L. Zeng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

The large edge-localized modes (ELM) in high confinement (H-mode) plasmas were suppressed using a magnetic boundary, produced by an applied edge resonant magnetic perturbation. The magnetic perturbations were produced by a set of control coils, referred to as I coil, located inside the vacuum vessel. The plasmas used in the experiment were double null diverted discharges with a 2 cm downward shift. The results demonstrate that stochastic boundary layers are compatible with H-mode plasmas and that a stochastic layer can suppress ELMs without degrading the global particle and energy confinement.

Original language	English
Article number	235003
Pages (from-to)	235003-1-235003-4
Journal	Physical Review Letters
Volume	92
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.92.235003
Publication status	Published - 11 Jun 2004

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Evans, T. E., Moyer, R. A., Thomas, P. R., Watkins, J. G., Osborne, T. H., Boedo, J. A., Doyle, E. J., Fenstermacher, M. E., Finken, K. H., Groebner, R. J., Groth, M., Harris, J. H., La Haye, R. J., Lasnier, C. J., Masuzaki, S., Ohyabu, N., Pretty, D. G., Rhodes, T. L., Reimerdes, H., ... Zeng, L. (2004). Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary. Physical Review Letters, 92(23), 235003-1-235003-4. Article 235003. https://doi.org/10.1103/PhysRevLett.92.235003

@article{3bd99aadde434c38a62fbb16c2b6406b,

title = "Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary",

abstract = "The large edge-localized modes (ELM) in high confinement (H-mode) plasmas were suppressed using a magnetic boundary, produced by an applied edge resonant magnetic perturbation. The magnetic perturbations were produced by a set of control coils, referred to as I coil, located inside the vacuum vessel. The plasmas used in the experiment were double null diverted discharges with a 2 cm downward shift. The results demonstrate that stochastic boundary layers are compatible with H-mode plasmas and that a stochastic layer can suppress ELMs without degrading the global particle and energy confinement.",

author = "Evans, {T. E.} and Moyer, {R. A.} and Thomas, {P. R.} and Watkins, {J. G.} and Osborne, {T. H.} and Boedo, {J. A.} and Doyle, {E. J.} and Fenstermacher, {M. E.} and Finken, {K. H.} and Groebner, {R. J.} and M. Groth and Harris, {J. H.} and {La Haye}, {R. J.} and Lasnier, {C. J.} and S. Masuzaki and N. Ohyabu and Pretty, {D. G.} and Rhodes, {T. L.} and H. Reimerdes and Rudakov, {D. L.} and Schaffer, {M. J.} and G. Wang and L. Zeng",

year = "2004",

month = jun,

day = "11",

doi = "10.1103/PhysRevLett.92.235003",

language = "English",

volume = "92",

pages = "235003--1--235003--4",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "23",

}

Evans, TE, Moyer, RA, Thomas, PR, Watkins, JG, Osborne, TH, Boedo, JA, Doyle, EJ, Fenstermacher, ME, Finken, KH, Groebner, RJ, Groth, M, Harris, JH, La Haye, RJ, Lasnier, CJ, Masuzaki, S, Ohyabu, N, Pretty, DG, Rhodes, TL, Reimerdes, H, Rudakov, DL, Schaffer, MJ, Wang, G & Zeng, L 2004, 'Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary', Physical Review Letters, vol. 92, no. 23, 235003, pp. 235003-1-235003-4. https://doi.org/10.1103/PhysRevLett.92.235003

TY - JOUR

T1 - Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary

AU - Evans, T. E.

AU - Moyer, R. A.

AU - Thomas, P. R.

AU - Watkins, J. G.

AU - Osborne, T. H.

AU - Boedo, J. A.

AU - Doyle, E. J.

AU - Fenstermacher, M. E.

AU - Finken, K. H.

AU - Groebner, R. J.

AU - Groth, M.

AU - Harris, J. H.

AU - La Haye, R. J.

AU - Lasnier, C. J.

AU - Masuzaki, S.

AU - Ohyabu, N.

AU - Pretty, D. G.

AU - Rhodes, T. L.

AU - Reimerdes, H.

AU - Rudakov, D. L.

AU - Schaffer, M. J.

AU - Wang, G.

AU - Zeng, L.

PY - 2004/6/11

Y1 - 2004/6/11

N2 - The large edge-localized modes (ELM) in high confinement (H-mode) plasmas were suppressed using a magnetic boundary, produced by an applied edge resonant magnetic perturbation. The magnetic perturbations were produced by a set of control coils, referred to as I coil, located inside the vacuum vessel. The plasmas used in the experiment were double null diverted discharges with a 2 cm downward shift. The results demonstrate that stochastic boundary layers are compatible with H-mode plasmas and that a stochastic layer can suppress ELMs without degrading the global particle and energy confinement.

AB - The large edge-localized modes (ELM) in high confinement (H-mode) plasmas were suppressed using a magnetic boundary, produced by an applied edge resonant magnetic perturbation. The magnetic perturbations were produced by a set of control coils, referred to as I coil, located inside the vacuum vessel. The plasmas used in the experiment were double null diverted discharges with a 2 cm downward shift. The results demonstrate that stochastic boundary layers are compatible with H-mode plasmas and that a stochastic layer can suppress ELMs without degrading the global particle and energy confinement.

UR - http://www.scopus.com/inward/record.url?scp=3242697217&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.92.235003

DO - 10.1103/PhysRevLett.92.235003

M3 - Article

SN - 0031-9007

VL - 92

SP - 235003-1-235003-4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

M1 - 235003

ER -

Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary

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