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

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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.

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DO - 10.1103/PhysRevLett.67.3098

M3 - Article

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SN - 0031-9007

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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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