IN-SITU METAL DEPOSITION IN A TOKAMAK
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United States of America Patent
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Mar 14, 2024
app pub date -
Dec 1, 2021
filing date -
Dec 8, 2020
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Abstract
A method of repairing a divertor or first wall surface in a tokamak plasma vessel. The divertor or first wall surface comprises a refractory metal having a melting point of at least 2000° C. A pressure of less than 25 mbar is maintained within the plasma vessel following the end of operation of the plasma vessel. The refractory metal is deposited onto the divertor or first wall surface within the plasma vessel via a deposition process which is one of: additive manufacturing; physical vapour deposition; thermal spray; arc ion plating; diode laser cladding; and chemical vapour deposition.
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