| 摘要 |
In one embodiment, the invention comprises a system for initiating superconductive current flow in a coil formed from material that is superconductive below a certain temperature. The coil is immersed in a cryogenic fluid to cool the coil below its superconductive temperature. Heat is applied to a first segment of the coil to maintain the first segment above a superconductive temperature. A current flow is established in a second segment of the coil from a source of electric current. After the second segment becomes superconductive, the application of heat to said first segment is discontinued, thereby allowing the first segment to cool below the superconductive material and establishing superconductive current flow within the first and second segment of the coil.
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