Throwing snowballs at home-made stars Back
November 27th 2025
at Chalmers PJ seminar room
Registration/abstract submission
is open and closes November 26th.
Vallhagen Workshop
The workshop is devoted to discuss issues of relevance for disruption mitigation in tokamaks with massive material injection.
The sudden loss of confinement of the energy content of fusion plasmas in off-normal events, called disruptions, is among the most severe threats to the future of fusion energy based on the tokamak design. An efficient disruption mitigation system will therefore be of utmost importance for future large, high-current devices such as ITER.
The potentially greatest threat to be mitigated is posed by currents carried by highly energetic electrons, called runaway electrons, which may cause severe damage upon wall impact. The disruption mitigation system must also ensure a sufficiently homogeneous deposition of the thermal energy on the plasma-facing components, and avoid excessive forces on the machine due to currents flowing in the surrounding structures. The currently envisaged mitigation method is to initiate a massive material injection, primarily in the form of a shattered cryogenic pellet, when an emerging disruption is detected, and so attempt to better control the plasma cooling.