Simulations of RF Beam Manipulations Including Intensity Effects for CERN PSB and SPS UpgradesSapienza Università Editrice, 30 nov 2022 - 214 pagine The LIU program at CERN is of paramount importance at international level. The program foresees a significant upgrade of the LHC injector chain to increase the luminosity of the LHC beam by a factor of ten after 2024, when the HL-LHC era will start. This thesis deals with longitudinal beam dynamics studies for two LHC injectors (PSB and SPS), the main goal being the analysis of beam instabilities in the HL-LHC scenario. |
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Accelerator Physics after-upgrade algorithm amplitude batch beam parameters benchmarks betatron BLonD code bunch intensity bunch length bunch lengthening mode bunch profile CERN collective effects computed controlled longitudinal emittance dipole dipole oscillations distribution equations extraction energy Fermilab ferrite Finemet flat top frequency domain function Gaussian harmonics HL-LHC impedance model induced voltage injection instability intensity effects kinetic energy Landau damping Linac2 line density longitudinal beam dynamics longitudinal emittance blow-up longitudinal phase space longitudinal space charge Ltot luminosity magnetic maximum MHz RF system obtained Particle Accelerator phase and radial phase loop phase modulation phase space proton radial loops recapture relative resonator revolution turn RF bucket RF cavities RF frequency RF manipulations RF phase noise RF voltage ring separatrix simulation results single RF system slices space charge effects synchronous synchrotron frequency Tmax transverse tune shift wakefields ZaGeV/c ΔΕ