Salle de contrôle BEBC

A view inside part of the control room of the 3.7 m European bubble chamber, BEBC. This gives an idea of the complexity of the many systems involved in the operation of the chamber. Last month were reported the first tracks taken in BEBC. A hydrogen leak had interrupted the tests but it proved possible to repair this quickly and operation continued at steadily increasing field levels up to 2.6 T. No troublesome effects appeared due to eddy currents in the metal piston which was temporarily replacing the plastic piston. The chamber had been 'warmed up' again to receive the last touches before the physics programme was launched in two months' time.