Research Needs for Magnetic Fusion Energy Sciences - US Burning ...

EaSt jt-60Sa KStaR itER aRiES-RS aRiES-at
P in /S (MW/m 2 ) 0.55 0.21 0.38 0.21 1.23 0.85
P in /R (MW/m) 13 14 12 28 93 75
Pulse Length (sec) 400 100 300 300-3000 ~ 10 7 ~ 10 7
H Diffusion depth per
pulse (m)
6x10 -6 3x10 -6 5x10 -6 0.4-1x10 -4 0.36 0.61
annual P in t/S (gj/m 2 ) 110 [1] 30 [2] 38 [3] 210 [4] 31,000 21,000
notes:
Species
d, h
(d-d 10 5 s/
yr) [5]
h
(d-d 10 4 s/
yr) [6]
331
h
(d-d 2 10 4 s/
yr) [3]
d-t d-t d-t
Wall t (K) 300 [7] 300 300 400 1000 1300
P h /P LH [8] 3.9 4.3 3.0 2.2 5.6 4.8
Table 1.
P in = total input power, including alpha heating, for proposed scenarios. bremsstralung and synchrotron losses are ~20
– 40% in iteR and aRies and should be included in surface losses, but not divertor heat loading. maximum planned
external heating for non d-t devices.
[1] J. li, private communication. expected operation < 2 x 10 5 sec/year.
[2] y. kamada, private communication: nb duty factor = 1/30. operation assumed here = 12 hours/day, 100 days/year =
1.44 x 10 5 sec/year.
[3] 10 5 seconds per year total operation, 2x10 4 seconds per year d-d operation.
[4] assumed 2500x 400s shots per year.
[5] J. li, private communication. 27 hours to allow entry into hall. Plan to assess possibility of remote maintenance.
[6] yearly neutron budget/maximum neutron rate.
[7] J. li, private communication. 500c W wall being assessed for east late operation phase.
[8] martin, y.R., Fec 2004, eq. 7, evaluated at n = nG. P h = P in less bremstrahlung and synchrotron radiation, appropriate
for use in evaluating P/P lh.