ENERGY DETECTOR FOR THE LINAC AT ANU

The linne booster at ANU consists of superconducting Split Loop Resona tors (SLRs). Each SLR needs to be individually tuned in phase and its amplitude set, for optimum acceleration efficiency. The superbuncher a mplitude and phase also has to be correctly set to obtain the time Foc al length for the bunched beam. A simple method has been proposed to b e used to lune the SLRs and the buncher. By observing the accelerated beam energy, the appropriate phase and amplitude can he determined. Th is will be done without using timing detectors or measuring magnetic r igidity. For the energy detection, instead of using surface barrier de tectors, two gas detectors have been designed, built and tested. This paper describes the tuning procedure, the detector details and the ini tial test measurements.