It is probably limited by heating of the diverter section where there's a magnetic x-point and plasma escape really tests the heat limits of materials. One of E

It is probably limited by heating of the diverter section where there's a magnetic x-point and plasma escape really tests the heat limits of materials. One of EAST's (and many Tokomak reactor's) main objectives is testing diverter materials and shapes. https://en.wikipedia.org/wiki/Divertor https://en.wikipedia.org/wiki/Divertor