Present performance of the CERN 800 MeV PS booster (PSB)

The CERN 800 MeV PSB consists of four synchrotrons stacked one on top of the other. The injector is the present 50 MeV CERN Proton Synchrotron (CPS) linac. Its beam is injected sequentially into the four rings via a vertical distribution system. Monoturn or multiturn injection of up to fifteen turns is available. After acceleration to 800 MeV, the four beams are ejected sequentially and brought to a common level by a recombination system. All twenty bunches are then transferred to the CPS, thus potentially increasing its intensity to 10/sup 13/ p/p. Multiturn injection, RF trapping efficiency, acceleration, synchronization, ejection, and transfer to the CPS are described in their latest stage. At the end of 1972 the design intensity of 2.5*10/sup 12/ p/p was reached in one ring. (14 refs).