Optimizing Stellarators for Turbulent Transport

Mynick, H. E. ; Pomphrey, N. ; Xanthopoulos, P.

Princeton University. Plasma Physics Laboratory.

关键词: Turbulence Turbulence, Transport Phenomena, Stellarators;    70 Plasma Physics And Fusion Technology;    Stellarators;    Turbulence, Transport Phenomena, Stellarators;    Transport;   

DOI  :  10.2172/981714
RP-ID  :  PPPL-4520
RP-ID  :  De-ACO2-09CH11466
RP-ID  :  981714

美国|英语

来源: UNT Digital Library

【 摘 要 】

Up to now, the term "transport-optimized" stellarators has meant optimized to minimize neoclassical transport, while the task of also mitigating turbulent transport, usually the dominant transport channel in such designs, has not been addressed, due to the complexity of plasma turbulence in stellarators. Here, we demonstrate that stellarators can also be designed to mitigate their turbulent transport, by making use of two powerful numerical tools not available until recently, namely gyrokinetic codes valid for 3D nonlinear simulations, and stellarator optimization codes. A first proof-of-principle configuration is obtained, reducing the level of ion temperature gradient turbulent transport from the NCSX baseline design by a factor of about 2.5.