Main Question or Discussion Point
As far as I know, almost all kinds of instabilities are suppressed in a tokamak. The only problem I see is that the poloidal field diminishes as we move further out from the plasma. This configurations hence can't suppress ELM's. But does the current passing through the plasma cause instabilities? I mean, I can't think of any but feel like the plasma current creates instabilities.
- So, I was wondering what kinds of instabilities tokamaks face and what causes them? And does plasma current play a role in instabilities?