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Re:Wendelstein 7-X: Gigajoule energy turnover generated for ... by klodolph on Friday August 11, 2023 @07:20PM (#37095214)
1. Something “in a superconducting state” has zero resistance, but the transition to superconducting states is not sudden, and there are various things which disrupt that state like magnetic fields.

2. Alternating currents will dissipate even with zero resistance, because the circuit will emit EM waves.

Re:Wendelstein 7-X: Gigajoule energy turnover generated for ... by KyleBerezin on Friday August 11, 2023 @08:46PM (#37095764)
Ladder lines are balanced transmission lines, so they do not emit EM radiation.
Re:Wendelstein 7-X: Gigajoule energy turnover generated for ... by klodolph on Friday August 11, 2023 @09:20PM (#37095981)
Wouldn’t that require kind of an idealized transmission line, not just a superconducting one?
Re:Wendelstein 7-X: Gigajoule energy turnover generated for ... by KyleBerezin on Friday August 11, 2023 @09:32PM (#37096050)
Yes. I don't think super conduncting ressonators of any design are perfect.