Super-X divertors and high power density fusion devicesa) (original) (raw)
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Research Article| April 17 2009
1Institute for Fusion Studies,
The University of Texas at Austin
, Austin, Texas 78712-1060,
USA
Search for other works by this author on:
1Institute for Fusion Studies,
The University of Texas at Austin
, Austin, Texas 78712-1060,
USA
Search for other works by this author on:
1Institute for Fusion Studies,
The University of Texas at Austin
, Austin, Texas 78712-1060,
USA
Search for other works by this author on:
2
Oak Ridge National Laboratory
, Oak Ridge, Tennessee 37830,
USA
Search for other works by this author on:
Paper TI2 2, Bull. Am. Phys. Soc. 53, 240 (2008).
Phys. Plasmas 16, 056110 (2009)
The Super-X Divertor (SXD), a robust axisymmetric redesign of the divertor magnetic geometry that can allow a fivefold increase in the core power density of toroidal fusion devices, is presented. With small changes in poloidal coils and currents for standard divertors, the SXD allows the largest divertor plate radius inside toroidal field coils. This increases the plasma-wetted area by 2–3 times over all flux-expansion-only methods (e.g., plate near main X point, plate tilting, X divertor, and snowflake), decreases parallel heat flux and hence plasma temperature at plate, and increases connection length by 2–5 times. Examples of high-power-density fusion devices enabled by SXD are discussed; the most promising near-term device is a 100 MW modular compact fusion neutron source “battery” small enough to fit inside a conventional fission blanket.
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© 2009 American Institute of Physics.
2009
American Institute of Physics
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