This is a very informative post to understand what happens inside the tokamak plasma chamber. Thank you for your sharing. I have little question here:

• The heating up makes them lose electrons which makes them ionized and charged. This charge forces them to get caught by the magnetic field which forces them back onto the wall. In the case of W this happens very quickly and very near the erosion zone. This means that the wall has some self-regenerating ability.*

Is this self-regenerating ability a wanted thing for us? And can we control it by changing some kind of process parameters? As I understand from the text it is a kind of preventing way against the erosion?! Am I right?