High internal inductance improved confinement H-mode discharges obtained with an elongation ramp technique in the DIII-D tokamak

L. L. Lao; J. R. Ferron; T. S. Taylor; K. H. Burrell; V. S. Chan; M. S. Chu; J. C. Deboo; E. J. Doyle; C. M. Greenfield; R. J. Groebner; R. James; E. A. Lazarus; T. H. Osborne; H. St.john; E. J. Strait; S. J. Thompson; A. D. Turnbull; D. Wroblewski; H. Zohm

doi:10.1103/PhysRevLett.70.3435

High internal inductance improved confinement H-mode discharges obtained with an elongation ramp technique in the DIII-D tokamak

L. L. Lao, J. R. Ferron, T. S. Taylor, K. H. Burrell, V. S. Chan, M. S. Chu, J. C. Deboo, E. J. Doyle, C. M. Greenfield, R. J. Groebner, R. James, E. A. Lazarus, T. H. Osborne, H. St.john, E. J. Strait, S. J. Thompson, A. D. Turnbull, D. Wroblewski, H. Zohm

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

47 Scopus citations

Abstract

High confinement mode (H-mode) discharges with peaked toroidal current density profile (high internal inductance, li) and improved confinement are obtained in the DIII-D tokamak by dynamically varying the current profile using a rapid elongation ramp technique. The confinement improvement increases with li and persists in the presence of edge-localized modes. The plasma toroidal rotation and the corresponding radial electric field component also increase with the peakedness of the current density profile.

Original language	English
Pages (from-to)	3435-3438
Number of pages	4
Journal	Physical Review Letters
Volume	70
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.70.3435
State	Published - 1993
Externally published	Yes

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Lao, L. L., Ferron, J. R., Taylor, T. S., Burrell, K. H., Chan, V. S., Chu, M. S., Deboo, J. C., Doyle, E. J., Greenfield, C. M., Groebner, R. J., James, R., Lazarus, E. A., Osborne, T. H., St.john, H., Strait, E. J., Thompson, S. J., Turnbull, A. D., Wroblewski, D., & Zohm, H. (1993). High internal inductance improved confinement H-mode discharges obtained with an elongation ramp technique in the DIII-D tokamak. Physical Review Letters, 70(22), 3435-3438. https://doi.org/10.1103/PhysRevLett.70.3435

@article{c210448efec5497982d0c9f14cff1b01,

title = "High internal inductance improved confinement H-mode discharges obtained with an elongation ramp technique in the DIII-D tokamak",

abstract = "High confinement mode (H-mode) discharges with peaked toroidal current density profile (high internal inductance, li) and improved confinement are obtained in the DIII-D tokamak by dynamically varying the current profile using a rapid elongation ramp technique. The confinement improvement increases with li and persists in the presence of edge-localized modes. The plasma toroidal rotation and the corresponding radial electric field component also increase with the peakedness of the current density profile.",

author = "Lao, {L. L.} and Ferron, {J. R.} and Taylor, {T. S.} and Burrell, {K. H.} and Chan, {V. S.} and Chu, {M. S.} and Deboo, {J. C.} and Doyle, {E. J.} and Greenfield, {C. M.} and Groebner, {R. J.} and R. James and Lazarus, {E. A.} and Osborne, {T. H.} and H. St.john and Strait, {E. J.} and Thompson, {S. J.} and Turnbull, {A. D.} and D. Wroblewski and H. Zohm",

year = "1993",

doi = "10.1103/PhysRevLett.70.3435",

language = "English",

volume = "70",

pages = "3435--3438",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

}

Lao, LL, Ferron, JR, Taylor, TS, Burrell, KH, Chan, VS, Chu, MS, Deboo, JC, Doyle, EJ, Greenfield, CM, Groebner, RJ, James, R, Lazarus, EA, Osborne, TH, St.john, H, Strait, EJ, Thompson, SJ, Turnbull, AD, Wroblewski, D & Zohm, H 1993, 'High internal inductance improved confinement H-mode discharges obtained with an elongation ramp technique in the DIII-D tokamak', Physical Review Letters, vol. 70, no. 22, pp. 3435-3438. https://doi.org/10.1103/PhysRevLett.70.3435

TY - JOUR

T1 - High internal inductance improved confinement H-mode discharges obtained with an elongation ramp technique in the DIII-D tokamak

AU - Lao, L. L.

AU - Ferron, J. R.

AU - Taylor, T. S.

AU - Burrell, K. H.

AU - Chan, V. S.

AU - Chu, M. S.

AU - Deboo, J. C.

AU - Doyle, E. J.

AU - Greenfield, C. M.

AU - Groebner, R. J.

AU - James, R.

AU - Lazarus, E. A.

AU - Osborne, T. H.

AU - St.john, H.

AU - Strait, E. J.

AU - Thompson, S. J.

AU - Turnbull, A. D.

AU - Wroblewski, D.

AU - Zohm, H.

PY - 1993

Y1 - 1993

N2 - High confinement mode (H-mode) discharges with peaked toroidal current density profile (high internal inductance, li) and improved confinement are obtained in the DIII-D tokamak by dynamically varying the current profile using a rapid elongation ramp technique. The confinement improvement increases with li and persists in the presence of edge-localized modes. The plasma toroidal rotation and the corresponding radial electric field component also increase with the peakedness of the current density profile.

AB - High confinement mode (H-mode) discharges with peaked toroidal current density profile (high internal inductance, li) and improved confinement are obtained in the DIII-D tokamak by dynamically varying the current profile using a rapid elongation ramp technique. The confinement improvement increases with li and persists in the presence of edge-localized modes. The plasma toroidal rotation and the corresponding radial electric field component also increase with the peakedness of the current density profile.

UR - http://www.scopus.com/inward/record.url?scp=3743142272&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.70.3435

DO - 10.1103/PhysRevLett.70.3435

M3 - Article

AN - SCOPUS:3743142272

SN - 0031-9007

VL - 70

SP - 3435

EP - 3438

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

ER -

High internal inductance improved confinement H-mode discharges obtained with an elongation ramp technique in the DIII-D tokamak

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