Deuterium-tritium high confinement (H-mode) studies in the Tokamak Fusion Test Reactor

C. E. Bush; S. A. Sabbagh; S. J. Zweben; R. E. Bell; E. J. Synakowski; G. Taylor; S. Batha; M. Bell; M. Bitter; N. L. Bretz; R. Budny; Z. Chang; D. S. Darrow; R. C. Efthimion; D. Ernst; E. Fredrickson; G. R. Hanson; L. C. Johnson; J. Kesner; B. LeBlanc; F. M. Levinton; D. Mansfield; M. E. Mauel; E. Mazzucato; D. McCune; M. Murakami; R. Nazikian; G. A. Navratil; H. Park; S. F. Paul; C. K. Phillips; M. H. Redi; J. Schivell; S. D. Scott; C. H. Skinner; H. H. Towner; J. B. Wilgen; M. C. Zarnstorff

doi:10.1063/1.871490

Deuterium-tritium high confinement (H-mode) studies in the Tokamak Fusion Test Reactor

C. E. Bush
, S. A. Sabbagh
, S. J. Zweben
, R. E. Bell
, E. J. Synakowski
, G. Taylor
, S. Batha
, M. Bell
, M. Bitter
, N. L. Bretz
, R. Budny
, Z. Chang
, D. S. Darrow
, R. C. Efthimion
, D. Ernst
, E. Fredrickson
, G. R. Hanson
, L. C. Johnson
, J. Kesner
, B. LeBlanc

F. M. Levinton, D. Mansfield, M. E. Mauel, E. Mazzucato, D. McCune, M. Murakami, R. Nazikian, G. A. Navratil, H. Park, S. F. Paul, C. K. Phillips, M. H. Redi, J. Schivell, S. D. Scott, C. H. Skinner, H. H. Towner, J. B. Wilgen, M. C. Zarnstorff

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

29 Scopus citations

Abstract

High or enhanced confinement (H-mode) plasmas have been obtained for the first time with nearly equal concentrations of deuterium and tritium in high-temperature, high poloidal beta plasmas in the Tokamak Fusion Test Reactor (TFTR) [McGuire, Phys. Plasmas 2, 2176 (1995)]. Tritium fueling was provided mainly through high-power neutral beam injection (NBI) with powers up to 31 MW and beam energies of 90-110 keV. A transition to a circular limiter H-mode configuration has been obtained, following a programmed rapid decrease of the plasma current. Isotope effects, due to the presence of tritium, led to different behavior for deuterium-deuterium (DD) and deuterium-tritium (DT) H-modes relative to confinement, edge localized magnetohydrodynamic modes (ELMs), and ELM effects on fusion products. However, the threshold power for the H-mode transition was the same in DD and DT. Some of the highest values of the global energy confinement time, τ_E, have been achieved on TFTR during the ELM-free phase of DT H-mode plasmas. Enhancements of τ_E greater than four times the L-mode have been attained.

Original language	English
Pages (from-to)	2366-2374
Number of pages	9
Journal	Physics of Plasmas
Volume	2
Issue number	6
DOIs	https://doi.org/10.1063/1.871490
State	Published - 1995

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Bush, C. E., Sabbagh, S. A., Zweben, S. J., Bell, R. E., Synakowski, E. J., Taylor, G., Batha, S., Bell, M., Bitter, M., Bretz, N. L., Budny, R., Chang, Z., Darrow, D. S., Efthimion, R. C., Ernst, D., Fredrickson, E., Hanson, G. R., Johnson, L. C., Kesner, J., ... Zarnstorff, M. C. (1995). Deuterium-tritium high confinement (H-mode) studies in the Tokamak Fusion Test Reactor. Physics of Plasmas, 2(6), 2366-2374. https://doi.org/10.1063/1.871490

@article{61a8d26d09a84795979c3521587b8e7d,

title = "Deuterium-tritium high confinement (H-mode) studies in the Tokamak Fusion Test Reactor",

abstract = "High or enhanced confinement (H-mode) plasmas have been obtained for the first time with nearly equal concentrations of deuterium and tritium in high-temperature, high poloidal beta plasmas in the Tokamak Fusion Test Reactor (TFTR) [McGuire, Phys. Plasmas 2, 2176 (1995)]. Tritium fueling was provided mainly through high-power neutral beam injection (NBI) with powers up to 31 MW and beam energies of 90-110 keV. A transition to a circular limiter H-mode configuration has been obtained, following a programmed rapid decrease of the plasma current. Isotope effects, due to the presence of tritium, led to different behavior for deuterium-deuterium (DD) and deuterium-tritium (DT) H-modes relative to confinement, edge localized magnetohydrodynamic modes (ELMs), and ELM effects on fusion products. However, the threshold power for the H-mode transition was the same in DD and DT. Some of the highest values of the global energy confinement time, τE, have been achieved on TFTR during the ELM-free phase of DT H-mode plasmas. Enhancements of τE greater than four times the L-mode have been attained.",

author = "Bush, \{C. E.\} and Sabbagh, \{S. A.\} and Zweben, \{S. J.\} and Bell, \{R. E.\} and Synakowski, \{E. J.\} and G. Taylor and S. Batha and M. Bell and M. Bitter and Bretz, \{N. L.\} and R. Budny and Z. Chang and Darrow, \{D. S.\} and Efthimion, \{R. C.\} and D. Ernst and E. Fredrickson and Hanson, \{G. R.\} and Johnson, \{L. C.\} and J. Kesner and B. LeBlanc and Levinton, \{F. M.\} and D. Mansfield and Mauel, \{M. E.\} and E. Mazzucato and D. McCune and M. Murakami and R. Nazikian and Navratil, \{G. A.\} and H. Park and Paul, \{S. F.\} and Phillips, \{C. K.\} and Redi, \{M. H.\} and J. Schivell and Scott, \{S. D.\} and Skinner, \{C. H.\} and Towner, \{H. H.\} and Wilgen, \{J. B.\} and Zarnstorff, \{M. C.\}",

year = "1995",

doi = "10.1063/1.871490",

language = "English",

volume = "2",

pages = "2366--2374",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "6",

}

Bush, CE, Sabbagh, SA, Zweben, SJ, Bell, RE, Synakowski, EJ, Taylor, G, Batha, S, Bell, M, Bitter, M, Bretz, NL, Budny, R, Chang, Z, Darrow, DS, Efthimion, RC, Ernst, D, Fredrickson, E, Hanson, GR, Johnson, LC, Kesner, J, LeBlanc, B, Levinton, FM, Mansfield, D, Mauel, ME, Mazzucato, E, McCune, D, Murakami, M, Nazikian, R, Navratil, GA, Park, H, Paul, SF, Phillips, CK, Redi, MH, Schivell, J, Scott, SD, Skinner, CH, Towner, HH, Wilgen, JB & Zarnstorff, MC 1995, 'Deuterium-tritium high confinement (H-mode) studies in the Tokamak Fusion Test Reactor', Physics of Plasmas, vol. 2, no. 6, pp. 2366-2374. https://doi.org/10.1063/1.871490

TY - JOUR

T1 - Deuterium-tritium high confinement (H-mode) studies in the Tokamak Fusion Test Reactor

AU - Bush, C. E.

AU - Sabbagh, S. A.

AU - Zweben, S. J.

AU - Bell, R. E.

AU - Synakowski, E. J.

AU - Taylor, G.

AU - Batha, S.

AU - Bell, M.

AU - Bitter, M.

AU - Bretz, N. L.

AU - Budny, R.

AU - Chang, Z.

AU - Darrow, D. S.

AU - Efthimion, R. C.

AU - Ernst, D.

AU - Fredrickson, E.

AU - Hanson, G. R.

AU - Johnson, L. C.

AU - Kesner, J.

AU - LeBlanc, B.

AU - Levinton, F. M.

AU - Mansfield, D.

AU - Mauel, M. E.

AU - Mazzucato, E.

AU - McCune, D.

AU - Murakami, M.

AU - Nazikian, R.

AU - Navratil, G. A.

AU - Park, H.

AU - Paul, S. F.

AU - Phillips, C. K.

AU - Redi, M. H.

AU - Schivell, J.

AU - Scott, S. D.

AU - Skinner, C. H.

AU - Towner, H. H.

AU - Wilgen, J. B.

AU - Zarnstorff, M. C.

PY - 1995

Y1 - 1995

N2 - High or enhanced confinement (H-mode) plasmas have been obtained for the first time with nearly equal concentrations of deuterium and tritium in high-temperature, high poloidal beta plasmas in the Tokamak Fusion Test Reactor (TFTR) [McGuire, Phys. Plasmas 2, 2176 (1995)]. Tritium fueling was provided mainly through high-power neutral beam injection (NBI) with powers up to 31 MW and beam energies of 90-110 keV. A transition to a circular limiter H-mode configuration has been obtained, following a programmed rapid decrease of the plasma current. Isotope effects, due to the presence of tritium, led to different behavior for deuterium-deuterium (DD) and deuterium-tritium (DT) H-modes relative to confinement, edge localized magnetohydrodynamic modes (ELMs), and ELM effects on fusion products. However, the threshold power for the H-mode transition was the same in DD and DT. Some of the highest values of the global energy confinement time, τE, have been achieved on TFTR during the ELM-free phase of DT H-mode plasmas. Enhancements of τE greater than four times the L-mode have been attained.

AB - High or enhanced confinement (H-mode) plasmas have been obtained for the first time with nearly equal concentrations of deuterium and tritium in high-temperature, high poloidal beta plasmas in the Tokamak Fusion Test Reactor (TFTR) [McGuire, Phys. Plasmas 2, 2176 (1995)]. Tritium fueling was provided mainly through high-power neutral beam injection (NBI) with powers up to 31 MW and beam energies of 90-110 keV. A transition to a circular limiter H-mode configuration has been obtained, following a programmed rapid decrease of the plasma current. Isotope effects, due to the presence of tritium, led to different behavior for deuterium-deuterium (DD) and deuterium-tritium (DT) H-modes relative to confinement, edge localized magnetohydrodynamic modes (ELMs), and ELM effects on fusion products. However, the threshold power for the H-mode transition was the same in DD and DT. Some of the highest values of the global energy confinement time, τE, have been achieved on TFTR during the ELM-free phase of DT H-mode plasmas. Enhancements of τE greater than four times the L-mode have been attained.

UR - https://www.scopus.com/pages/publications/0009436704

U2 - 10.1063/1.871490

DO - 10.1063/1.871490

M3 - Article

AN - SCOPUS:0009436704

SN - 1070-664X

VL - 2

SP - 2366

EP - 2374

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 6

ER -

Deuterium-tritium high confinement (H-mode) studies in the Tokamak Fusion Test Reactor

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