PB-IONS IN HARMONIC NUMBER 4653 AT SPS FLAT BOTTOM
DOI:
https://doi.org/10.23727/CERN-Proceedings-2017-002.151Abstract
Pb-ion beams suer from strong beam degradation such as transverse emittance growth and losses on the long flat bottom of the SPS cycles used for LHC filling. A possible contribution to the losses could come from RF noise, espe- cially due to the frequency and amplitude modulation during each revolution period of the fixed frequency acceleration mode required for the acceleration of these beams. A ma- chine development session in 2016 was devoted to a direct comparison of a cycle with fixed harmonic number at flat bottom and a cycle with the usually used fixed frequency mode. The main results are reported here.
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2017-12-12
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