RF gymnastics in the PS - CERN

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Table 1: High power RF systemsName[Ref.]Marelli[1]C10[6]C200[7]C114[19]C40[24]C80[25]C20[28]Cavity typeFerrite-loadedcoaxial resonatorFerrite-loadedcoaxial resonatorPill-box withceramic gapEvacuated with noseconesEvacuated withcapacitive loadingEvacuated withcapacitive loadingFerrite-loadedcoaxial resonatorFrequencyrangeTuning2–10 MHz Fast over the full range(ferrite bias)2.6–9.5 MHz Fast over the full range(ferrite bias)200 ± 0.5 MHz Slow (piston withstepping motor) on allcavities + Fast (pistonwith linear actuator) ontwo cavities114.511 MHz Slow (piston withstepping motor)40.055 MHz Slow (piston withstepping motor)80.100 MHz Slow (piston withstepping motor)13.3 + 20 MHz Slow (HV switch) + fastover limited range(ferrite bias)NumberofcavitiesVoltage /cavityRFpower /cavityDate ofinstallation16 8 kV > 5 kW 1959 197311 20 kV 90 kW 19728 30 kV 20 kW 1977–19792 500 kV 50 kW 1986 20012 300 kV 400 kW 19963 300 kV 400 kW 19982 20 kV 50 kW 2002Date ofremoval18
StartingyearTable 2: Evolution of RF gymnasticsOperation Main users RF systems running simultaneouslySystems Harmonics Freq.groupsAmpl.groups16 × Marelli cavities h= 20 1 1ISR1–4 × C200 cavities h= n × 20 1 21959 Acceleration on h=20 Experiments1978 Controlled longitudinal blow-up High intensityusers(21 h=84)+ bunch compressionLHC 10 × C10 cavities h= 7 + 14 +21 3 41 × C40 cavities h= 84 1 12 × C80 cavities h= 168 1 119
Page 1: RF gymnastics1 IntroductionDuring i
Page 4 and 5: Fig. 4: RF peak voltage and beam at
Page 7 and 8: In practice, cavities have to be sp
Page 9 and 10: For LEAR, the PS had for the first
Page 11 and 12: Fig. 19: Initial process for genera
Page 13 and 14: Quadruple splitting [Fig. 23(b)] at
Page 15 and 16: 6 Heavy ions for the LHCFor ions he
Page 20 and 21: Table 3: Means of impedance reducti
Page 22: [16] F. Blas and R. Garoby, Design

RF gymnastics in the PS - CERN

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