COMPASS Upgrade

COMPASS Upgrade (COMPASS-U) is a new medium-sized (R = 0.9 m) tokamak under construction at the Institute of Plasma Physics in Prague. Designed to address some of the key challenges in next step fusion devices, COMPASS-U features a unique combination of hot metallic first wall operating up to 500 °C and cryogenically cooled copper coils. The latter provides a high magnetic field (Bt = 5 T) and high plasma current (Ip = 2 MA), yielding, e.g. a very narrow power flux decay length (<1 mm). This configuration makes the device an ideal testbed for studying power exhaust, advanced confinement regimes, liquid metal concepts, and other reactor-relevant topics.

https://www.ipp.cas.cz/Compass_U/