Advanced tokamak operating modes in TPX and ITER Page: 4 of 16
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while scaling TE to the ITER '89 power law scaling by defining
tE
H= .T
TITER89
A long-pulse inductive tokamak reactor would be expect to operate (consistent
with today's physics database) with $n'< 3, and H < 2. A substantial
improvement in the cost of electricity (a reduction by about a factor of 2) could be
obtained if we could instead operate with sn*< 6, and H 5 3. This is illustrated
by the "TPX reactor" of Fig. 1, which assumed On= 5, and TE/TITER.p 2.5.250
200
S
150
d 100
w
0
O
U 0
0ARIESI- I
APWR B PWRs ~ . . -
FISSION, OSSIL
(~ 600-12 OMWe) IPR0
500
1000 1500 2000
Unit Size Electric Power (MWe)2500
Figure 1. Projected cost of electricity for fusion power plants (figure
courtesy of J. Perkins).
From a physics perspective, the shift in focus toward advanced physics
results from the success of the tokamak physics program. The major physics
issue for the plasma core of a long-pulse, inductive tokamak has been energy
confinement. This issue is now nearly resolved-we are reasonably confident-2-
Pulsed inductive tokamak, nominal
"-*'"" physics (ITER extrapolation)
Steady-state tokamak, advanced
physics (TPX extrapolation)
"" Neoclassical Tokamak3000
.L,
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Nevins, W. M. Advanced tokamak operating modes in TPX and ITER, article, December 31, 1994; California. (https://digital.library.unt.edu/ark:/67531/metadc682144/m1/4/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.