Observations on Transverse Instabilities
نویسنده
چکیده
Machine studies have been conducted in the SPS to better characterise the transverse instabilities observed on the LHC beam by the beam induced electron cloud. Most of the observations have been performed at injection energy. Different beam configurations have been considered as a function of their availability from the injectors. The results of these observations (bunch centroid motion, head-tail oscillations, emittance blow-up, intensity evolution along the batch) and their additional dependence on machine settings (e.g. sextupoles and octupole settings) are presented.
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