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Title: Physics basis for an advanced physics and advanced technology tokamak power plant configuration: ARIES-ACT1

Abstract

Here, the advanced physics and advanced technology tokamak power plant ARIES-ACT1 has a major radius of 6.25 m at an aspect ratio of 4.0, toroidal field of 6.0 T, strong shaping with elongation of 2.2, and triangularity of 0.63. The broadest pressure cases reached wall-stabilized β N ~ 5.75, limited by n = 3 external kink mode requiring a conducting shell at b/a = 0.3, requiring plasma rotation, feedback, and/or kinetic stabilization. The medium pressure peaking case reaches β N = 5.28 with B T = 6.75, while the peaked pressure case reaches β N < 5.15. Fast particle magnetohydrodynamic stability shows that the alpha particles are unstable, but this leads to redistribution to larger minor radius rather than loss from the plasma. Edge and divertor plasma modeling shows that 75% of the power to the divertor can be radiated with an ITER-like divertor geometry, while >95% can be radiated in a stable detached mode with an orthogonal target and wide slot geometry. The bootstrap current fraction is 91% with a q95 of 4.5, requiring ~1.1 MA of external current drive. This current is supplied with 5 MW of ion cyclotron radio frequency/fast wave and 40 MW of lower hybridmore » current drive. Electron cyclotron is most effective for safety factor control over ρ~0.2 to 0.6 with 20 MW. The pedestal density is ~0.9×10 20/m 3, and the temperature is ~4.4 keV. The H98 factor is 1.65, n/n Gr = 1.0, and the ratio of net power to threshold power is 2.8 to 3.0 in the flattop.« less

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [3];  [3];  [3]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1297641
Report Number(s):
LLNL-JRNL-640706
Journal ID: ISSN 1536-1055
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Fusion Science and Technology
Additional Journal Information:
Journal Name: Fusion Science and Technology; Journal ID: ISSN 1536-1055
Publisher:
American Nuclear Society
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION

Citation Formats

Kessel, C. E., Poli, F. M., Ghantous, K., Gorelenkov, N. N., Rensink, M. E., Rognlien, T. D., Snyder, P. B., St. John, H., and Turnbull, A. D. Physics basis for an advanced physics and advanced technology tokamak power plant configuration: ARIES-ACT1. United States: N. p., 2015. Web. doi:10.13182/FST14-795.
Kessel, C. E., Poli, F. M., Ghantous, K., Gorelenkov, N. N., Rensink, M. E., Rognlien, T. D., Snyder, P. B., St. John, H., & Turnbull, A. D. Physics basis for an advanced physics and advanced technology tokamak power plant configuration: ARIES-ACT1. United States. doi:10.13182/FST14-795.
Kessel, C. E., Poli, F. M., Ghantous, K., Gorelenkov, N. N., Rensink, M. E., Rognlien, T. D., Snyder, P. B., St. John, H., and Turnbull, A. D. Thu . "Physics basis for an advanced physics and advanced technology tokamak power plant configuration: ARIES-ACT1". United States. doi:10.13182/FST14-795. https://www.osti.gov/servlets/purl/1297641.
@article{osti_1297641,
title = {Physics basis for an advanced physics and advanced technology tokamak power plant configuration: ARIES-ACT1},
author = {Kessel, C. E. and Poli, F. M. and Ghantous, K. and Gorelenkov, N. N. and Rensink, M. E. and Rognlien, T. D. and Snyder, P. B. and St. John, H. and Turnbull, A. D.},
abstractNote = {Here, the advanced physics and advanced technology tokamak power plant ARIES-ACT1 has a major radius of 6.25 m at an aspect ratio of 4.0, toroidal field of 6.0 T, strong shaping with elongation of 2.2, and triangularity of 0.63. The broadest pressure cases reached wall-stabilized βN ~ 5.75, limited by n = 3 external kink mode requiring a conducting shell at b/a = 0.3, requiring plasma rotation, feedback, and/or kinetic stabilization. The medium pressure peaking case reaches βN = 5.28 with BT = 6.75, while the peaked pressure case reaches βN < 5.15. Fast particle magnetohydrodynamic stability shows that the alpha particles are unstable, but this leads to redistribution to larger minor radius rather than loss from the plasma. Edge and divertor plasma modeling shows that 75% of the power to the divertor can be radiated with an ITER-like divertor geometry, while >95% can be radiated in a stable detached mode with an orthogonal target and wide slot geometry. The bootstrap current fraction is 91% with a q95 of 4.5, requiring ~1.1 MA of external current drive. This current is supplied with 5 MW of ion cyclotron radio frequency/fast wave and 40 MW of lower hybrid current drive. Electron cyclotron is most effective for safety factor control over ρ~0.2 to 0.6 with 20 MW. The pedestal density is ~0.9×1020/m3, and the temperature is ~4.4 keV. The H98 factor is 1.65, n/nGr = 1.0, and the ratio of net power to threshold power is 2.8 to 3.0 in the flattop.},
doi = {10.13182/FST14-795},
journal = {Fusion Science and Technology},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {1}
}

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