How does a Bitter magnet differ in its construction from a simple wound coil magnet?
A Bitter magnet is made from a stack of plates with holes in a helical arrangement separated by insulators. The idea is to get a helical flow of current so similar to a coil.
Each plate acts as roughly a single turn carrying a massive current but the current flow is apparently non-linear. So this must result in some changes to the simplified solenoid equations normally used. What are they?
Superconducting magnets do not seem to be based on the Bitter design. Why not? Couldn't the plates be made of superconductors instead of conductors? Is there a requirement for them to have some resistance? Or is it simply that plates are need to hold a massive current in a resistor and not in a superconductor, which seems like the obvious conclusion.
I also note (slightly off-topic) that because these are made of plates rather than windings they look much easier to construct and ripe for mass production yet the opposite seems true https://www.youtube.com/watch?v=tBz6jVC-Gg4 There is surely no shortage of demand given applications like NMR imaging. What am I missing?
There was a similar question here:
It was closed as being about the design. I think this was wrong as you need to understand the physical principles involved in order to construct one.