Tokamak with poloidal field coil arrangement for double null merging ignition, method therefor and nuclear fusion reactor with the same
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United States of America
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Mar 3, 2020
Grant Date -
Dec 26, 2019
app pub date -
Jan 29, 2018
filing date -
Jan 29, 2018
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Abstract
A tokamak comprising a toroidal containment vessel and a plasma initiation system. The toroidal containment vessel is configured to contain a plasma. The plasma initiation system comprises upper and lower poloidal field, PF, coil sets. Each PF coil set comprises at least one inner PF coil located outside of the containment vessel, an outer PF coil located inside the containment vessel, and shielding located between the outer PF coil and a location of the plasma during operation of the tokamak and configured to protect the outer PF coil from heat emitted by the plasma. The inner and outer PF coils are configured so as to form a PF null within the containment vessel between the inner and outer PF coils, such that the upper and lower PF coil pairs are operable to initiate a plasma in the containment vessel via double null merging.
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