The CERN Witch Has Risen

This Halloween, meet CERN’s very own WITCH – an experiment at ISOLDE, the laboratory’s nuclear facility. The 31 October conjures up images of pumpkins, ghouls and the iconic witch –complete with pointy hat and black cat. CERN’s WITCH (the Weak Interaction Trap for Charged Particles) experiment may not have the cat, but it does have its own particle-track broomstick.