1 week ago
This photo shows one of the LHC cold boxes, located in an underground cavern at point 4 of the 27-km ring. Liquid helium is stabilised and stored in a tank at a temperature of approximately 4.5 K (-268,65 C°). ⠀
Since the start of January, the liquid helium flowing through the veins of the LHC’s cooling system has gradually been removed from the accelerator and, one by one, the eight sectors of the LHC have been brought back to room temperature.