Regime of very high confinement in the boronized DIII-D tokamak

G. L. Jackson; J. Winter; T. S. Taylor; K. H. Burrell; J. C. Deboo; C. M. Greenfield; R. J. Groebner; T. Hodapp; K. Holtrop; E. A. Lazarus; L. L. Lao; S. I. Lippmann; T. H. Osborne; T. W. Petrie; J. Phillips; R. James; D. P. Schissel; E. J. Strait; A. D. Turnbull; W. P. West

doi:10.1103/PhysRevLett.67.3098

Regime of very high confinement in the boronized DIII-D tokamak

G. L. Jackson
, J. Winter
, T. S. Taylor
, K. H. Burrell
, J. C. Deboo
, C. M. Greenfield
, R. J. Groebner
, T. Hodapp
, K. Holtrop
, E. A. Lazarus
, L. L. Lao
, S. I. Lippmann
, T. H. Osborne
, T. W. Petrie
, J. Phillips
, R. James
, D. P. Schissel
, E. J. Strait
, A. D. Turnbull
, W. P. West

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

198 Scopus citations

Abstract

Following boronization, tokamak discharges in DIII-D have been obtained with confinement times up to a factor of 3.5 above the ITER89-P L-mode scaling and 1.8 times greater than the DIII-D/JET H-mode scaling relation. Very high confinement phases are characterized by relatively high central density with ne(0)1×1020 m-3, and central ion temperatures up to 13.6 keV at moderate plasma currents (1.6 MA) and heating powers (12.515.3 MW). These discharges exhibit a low fraction of radiated power, P25%, Zeff(0) close to unity, and lower impurity influxes than comparable DIII-D discharges before boronization.

Original language	English
Pages (from-to)	3098-3101
Number of pages	4
Journal	Physical Review Letters
Volume	67
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.67.3098
State	Published - 1991
Externally published	Yes

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Jackson, G. L., Winter, J., Taylor, T. S., Burrell, K. H., Deboo, J. C., Greenfield, C. M., Groebner, R. J., Hodapp, T., Holtrop, K., Lazarus, E. A., Lao, L. L., Lippmann, S. I., Osborne, T. H., Petrie, T. W., Phillips, J., James, R., Schissel, D. P., Strait, E. J., Turnbull, A. D., & West, W. P. (1991). Regime of very high confinement in the boronized DIII-D tokamak. Physical Review Letters, 67(22), 3098-3101. https://doi.org/10.1103/PhysRevLett.67.3098

@article{1d7ceceb41b8468f9d6c12f119db8639,

title = "Regime of very high confinement in the boronized DIII-D tokamak",

abstract = "Following boronization, tokamak discharges in DIII-D have been obtained with confinement times up to a factor of 3.5 above the ITER89-P L-mode scaling and 1.8 times greater than the DIII-D/JET H-mode scaling relation. Very high confinement phases are characterized by relatively high central density with ne(0)1×1020 m-3, and central ion temperatures up to 13.6 keV at moderate plasma currents (1.6 MA) and heating powers (12.515.3 MW). These discharges exhibit a low fraction of radiated power, P25\%, Zeff(0) close to unity, and lower impurity influxes than comparable DIII-D discharges before boronization.",

author = "Jackson, \{G. L.\} and J. Winter and Taylor, \{T. S.\} and Burrell, \{K. H.\} and Deboo, \{J. C.\} and Greenfield, \{C. M.\} and Groebner, \{R. J.\} and T. Hodapp and K. Holtrop and Lazarus, \{E. A.\} and Lao, \{L. L.\} and Lippmann, \{S. I.\} and Osborne, \{T. H.\} and Petrie, \{T. W.\} and J. Phillips and R. James and Schissel, \{D. P.\} and Strait, \{E. J.\} and Turnbull, \{A. D.\} and West, \{W. P.\}",

year = "1991",

doi = "10.1103/PhysRevLett.67.3098",

language = "English",

volume = "67",

pages = "3098--3101",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

}

Jackson, GL, Winter, J, Taylor, TS, Burrell, KH, Deboo, JC, Greenfield, CM, Groebner, RJ, Hodapp, T, Holtrop, K, Lazarus, EA, Lao, LL, Lippmann, SI, Osborne, TH, Petrie, TW, Phillips, J, James, R, Schissel, DP, Strait, EJ, Turnbull, AD & West, WP 1991, 'Regime of very high confinement in the boronized DIII-D tokamak', Physical Review Letters, vol. 67, no. 22, pp. 3098-3101. https://doi.org/10.1103/PhysRevLett.67.3098

TY - JOUR

T1 - Regime of very high confinement in the boronized DIII-D tokamak

AU - Jackson, G. L.

AU - Winter, J.

AU - Taylor, T. S.

AU - Burrell, K. H.

AU - Deboo, J. C.

AU - Greenfield, C. M.

AU - Groebner, R. J.

AU - Hodapp, T.

AU - Holtrop, K.

AU - Lazarus, E. A.

AU - Lao, L. L.

AU - Lippmann, S. I.

AU - Osborne, T. H.

AU - Petrie, T. W.

AU - Phillips, J.

AU - James, R.

AU - Schissel, D. P.

AU - Strait, E. J.

AU - Turnbull, A. D.

AU - West, W. P.

PY - 1991

Y1 - 1991

N2 - Following boronization, tokamak discharges in DIII-D have been obtained with confinement times up to a factor of 3.5 above the ITER89-P L-mode scaling and 1.8 times greater than the DIII-D/JET H-mode scaling relation. Very high confinement phases are characterized by relatively high central density with ne(0)1×1020 m-3, and central ion temperatures up to 13.6 keV at moderate plasma currents (1.6 MA) and heating powers (12.515.3 MW). These discharges exhibit a low fraction of radiated power, P25%, Zeff(0) close to unity, and lower impurity influxes than comparable DIII-D discharges before boronization.

AB - Following boronization, tokamak discharges in DIII-D have been obtained with confinement times up to a factor of 3.5 above the ITER89-P L-mode scaling and 1.8 times greater than the DIII-D/JET H-mode scaling relation. Very high confinement phases are characterized by relatively high central density with ne(0)1×1020 m-3, and central ion temperatures up to 13.6 keV at moderate plasma currents (1.6 MA) and heating powers (12.515.3 MW). These discharges exhibit a low fraction of radiated power, P25%, Zeff(0) close to unity, and lower impurity influxes than comparable DIII-D discharges before boronization.

UR - https://www.scopus.com/pages/publications/0000143126

U2 - 10.1103/PhysRevLett.67.3098

DO - 10.1103/PhysRevLett.67.3098

M3 - Article

AN - SCOPUS:0000143126

SN - 0031-9007

VL - 67

SP - 3098

EP - 3101

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

ER -

Regime of very high confinement in the boronized DIII-D tokamak

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