Special PS Accelerator Seminar: Instabilities in accelerators

This 9 week course under the auspices of PS Seminars is intended for anyone with a technical or scientific background who would like to become familiar with the principles of accelerator design. The level of the course is chosen with the intention of preparing those with no specialist knowledge of accelerator theoryfor the CERN Accelerator School in September but it will also be of interest to a much wider audience from all the technical Divisions. The first two talks (2 May at 11.00 hrs and 11 May* at 14.00 hrs) will be by way of mathematical introduction for those whose matrix algebra and solution of differential equations may need refreshing. Starting on 16 May there will be a series of seven talks on all aspects of circular machines which will cover in a simple way the principles of focussing betatron motion, dispersion chromaticity radio frequency systems and phase stability and beam instabilities. The special features of electron machines will be emphasized in preparation for LEP. All sessions will be held in the Main Auditorium (BIdg 500). There will be tutorial sessions on Fridays following the Monday courses. Prof. WILSON deals essentially with one kind of instability, which is the one in the longitudinal direction, the direction in which the beam is travelling. He wants to show how, by interaction with the cavity, the instability can destroy the beam.