Development of the ITER Advanced Steady State and Hybrid Scenarios
Authors: C.E. Kessel, D. Campbell, T. Casper, Y. Gribov, and J. Snipes
Abstract:
Full discharge simulations are performed to examine the plasma current rampup, flattop and
rampdown phases self-consistently with the poloidal field (PF) coils and their limitations, plasma
transport evolution, and heating/current drive (H/CD) sources. Steady state scenarios are found that
obtain 100% non-inductive current with Ip = 7.3-10.0 MA, βN ~ 2.5 for H98 = 1.6, Q’s range from 3 to
6, n/nGr = 0.75-1.0, and NB, IC, EC, and LH source have been examined. The scenarios remain within
CS/PF coil limits by advancing the pre-magnetization by 40 Wb. Hybrid scenarios have been identified
with 35-40% non-inductive current for Ip = 12.5 MA, H98 ~ 1.25, with q(0) reaching 1 at or after the
end of rampup. The equilibrium operating space for the hybrid shows a large range of scenarios can be
accommodated, and access 925-1300 s flattop burn durations.
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Presented at: IAEA Fusion Energy Conference 2010, Daejon, Korea (October 11-16, 2010)
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Download PPPL-4555 (pdf 202 KB 8 pp)
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