Vacuum gauge of Proton Synchrotron (PS)

Collection of vacuum gauges that are interlocked with pneumatic and electromagnetically operated valves to form the control and safety system for a 60- metre sector of the vacuum system. During the accelerator shut-downs of the past year, work has been carried out to modify the electrical and water connexions of the pump units to facilitate rapid replacement or change of position if necessary, and 14 units were dealt with in the latest shut-down in June and July. Among other work on the pump units during this time were oil changes, replacement of faulty vacuum gauges and a general checking of the electrical circuits.