Superconducting circuitry and the tank circuit

[MIC]

howdy,

I have never worked with superconductive circuitry, nor do I know of it's use much past MRI machines with large coils and in its research for transmission lines.

What if you were to make a superconducting capacitor, and place it in parallel with a superconducting coil to make a "tank circuit". Could this be used to store energy as an AC battery?
My line of thought is that in a superconducting environment, the energy wouldn't dissipate so much, so a constant AC source wouldn't be required to drive the circuit. Could a standing wave be formed similar to a diode laser, mirrored between the inductor and capacitor, that would not require constant pumping to remain, for possible use as an AC battery for high power.

I don't pretend to have enough experience or understanding about these things, so I thought to post it here and see what kind of response I would get. Thank you.

 

[f95toli]

You are describing a superconducting resonator. These have been around for a long time and are used to e.g. build filters and in particle accelerators to generate high E fields.

But no, they are not very useful as storage elements. The reason is simply that even a superconducting resonator is quite lossy and the energy dissipates away very quickly (and even if the resonator itself was not lossy you would still have radiation losses etc).
If you want to store energy it is much better to use e.g. a superconducting storage ring, these can store large amounts of energy for very long times (many years).

 

[Dickfore]

superconducting capacitor

What is this?