Mercury storm in the reaction chamber for the Muon Storage Ring and Collider project

One of the important conclusions of our first E951 run is that, even at the reduced beam intensities that were reached, much of the mercury contained in the jet was dispersed at typical transverse velocities of the order of 10 m/s. We therefore must assume that, at full intensity, most of the mercury contained in a 30 m/s jet entering a 16 cm diameter, 80 cm long cylindrical magnet chamber will be dispersed by the beam and will impact the walls during the 100 ms "beam on" part of the cycle (see fig.1). During the remaining 300 ms the unperturbed jet will exit the chamber and be collected in an appropriate sink.