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Title: Fusion Pilot Plant performance and the role of a Sustained High Power Density tokamak
Contributors: Menard, Jonathan
Grierson, Brian
Brown, Tom
Rana, Chirag
Zhai, Yuhu
Poli, Francesca
Maingi, Rajesh
Guttenfelder, Walter
Snyder, Philip
U. S. Department of Energy contract number DE-AC02-09CH11466
Keywords: fusion pilot plant
steady-state tokamak
core-edge integration
high-temperature superconductors
liquid metals
Issue Date: Jan-2022
Publisher: Princeton Plasma Physics Laboratory, Princeton University
Related Publication: Nuclear Fusion (
Abstract: Recent U.S. fusion development strategy reports all recommend that the U.S. should pursue innovative science and technology to enable construction of a Fusion Pilot Plant (FPP) that produces net electricity from fusion at low capital cost. Compact tokamaks have been proposed as a means of potentially reducing the capital cost of a fusion pilot plant. However, compact steady-state tokamak FPPs face the challenge of integrating a high fraction of self-driven current with high core confinement, plasma pressure, and high divertor parallel heat flux. This integration is sufficiently challenging that a dedicated sustained-high-power-density (SHPD) tokamak facility is proposed by the U.S. community as the optimal way to close this integration gap. Performance projections for the steady-state tokamak FPP regime are presented and a preliminary SHPD device with substantial flexibility in lower aspect ratio (A=2-2.5), shaping, and divertor configuration to narrow gaps to a FPP is described.
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Appears in Collections:System Studies

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