High Intensity Phenomena Observed in the CPS

Abstract

A review of high intensity phenomena observed in the CPS is presented. At injection an attempt is made to describe the combined effect of space charge and resonances, which result in a loss of 70% of the injected beam intensity and a reduction by a factor of 3 of the central core brilliance. Results of measurements on the effect of a localised bad vacuum are given. The situation at transition is briefly described. Seven different instabilities observed in the CPS in longitudinal or transverse phase plane are analysed. The compensation techniques are described in all cases. Whenever possible an attempt has been made to give some qualitative explanation of the mechanism.

On the Measurement and Interpretation of Coupling Impedance Data in the Frequency and Time Domain

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Transverse single-particle instability in the NAL 500 GeV accelerator

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