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Impedance budget

Impedance budget. First parameter estimation :. assuming no intrapulse space, all ring filled with bunches. Impedance budget. PS2 has in account 1500 vacuum flanges. Analytic estimations following:.

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Impedance budget

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  1. Impedance budget Firstparameterestimation: assuming no intrapulse space, all ring filled with bunches

  2. Impedance budget PS2 has in account 1500 vacuum flanges Analytic estimations following: “Impedance considerations for the design of the vacuum system of the CERN PS2 Proton Synchrotron”, K.L.F Bane et al.

  3. Impedance budget Round pipe Thick wall • pipe length • pipe radius • metal conductivity (assumed SS) • Typical beam size calculated with emittance and average beta • skin depth • with and typical frequency of the bunch, the bunch length Kick factor “Microwave instability” Boussard criterion • the growth rate of the instability • average current assuming full ring filled with bunches • fractional part of vertical tune • average beta function “Transverse Mode Coupling Instability TMCI” “Transverse coupled bunch Instability Assuming only RW

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