Report on the CERN SC Improvement Programme

Abstract

The essential features of the reconstructed CERN 600 MeV Synchro-Cyclotron are a hooded-arc mid-plane ion source, a radiofrequency system modulated between 30.4 and 16.7 MHz at about 450 cycles per second, and an electro-magnetic extraction channel designed to extract over 70% of a 10 ~A internal proton beam. Preparation of the material required for the reconstruction was started in 1967. The transformation of the synchro-cyclotron and of its associated equipment was carried out between June 1973 and September 1974. The principal phases of the reconstruction and recommissioning are described, and performance data of CERN SC2 are presented.