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space-charge compensation with possible application to the PS or PS booster. pre-Christmas brainstorm. tentative agenda electron lenses (Masamitsu, Ulrich) space-charge compensation at the ISR (Jean-Pierre) octupoles (Yannis) nature of space-charge limits at CERN. parameters.
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space-charge compensationwith possible application to the PS or PS booster pre-Christmas brainstorm Frank Zimmermann, scc-bs, 21.12.2006
tentative agenda • electron lenses (Masamitsu, Ulrich) • space-charge compensation at the ISR (Jean-Pierre) • octupoles (Yannis) • nature of space-charge limits at CERN Frank Zimmermann, scc-bs, 21.12.2006
parameters Frank Zimmermann, scc-bs, 21.12.2006
remarkable conclusion from that PAC01 paper: is this true for the PS and PS booster? Frank Zimmermann, scc-bs, 21.12.2006
PSB limitations (Space charge) • Space charge and longitudinal plane: • Loss of Landau damping due to the different detuning of the coherent and incoherent dipolar and quadrupolar modes. Increase by > factor 3 after the change of harmonic 5 1 in 1998. Expect Nth ~ 7x1012 p/bunch (dipole) and ~1x1013 p/bunch (quadrupole). This in the past led to CBI (disappeared when moved to h=1). PSB F. Pedersen from Gianluigi Arduini, presentation at LUMI’906 Frank Zimmermann, scc-bs, 21.12.2006