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SUMMARY:Modelling and beam instability studies for Future ERL-based Applic
 ations
DTSTART:20261125T133000Z
DTEND:20261125T143000Z
DTSTAMP:20261111T191800Z
UID:indico-event-19558@indico.psi.ch
DESCRIPTION:Speakers: Lode Vanhecke (EPFL)\n\nEnergy Recovery Linacs (ERLs
 ) demand precise control of collective effects to sustain high-current\, h
 igh-energy operation while preserving efficient energy recovery. Beam load
 ing and beam break-up (BBU) set fundamental stability limits\, so higher-o
 rder mode (HOM) damping and beam-current tolerances must be quantified to 
 suppress destructive modes and to define the thresholds at which BBU and b
 eam loading drive unacceptable transverse or longitudinal emittance growth
 . These limits are studied for the energy-efficient cryomodules being deve
 loped by Innovate for Sustainable Accelerating Systems (iSAS). Multi-pass 
 beam-cavity coupling is modelled with a self-consistent particle-tracking 
 framework in which multi-bunch beams are dynamically routed through multip
 le beamlines according to their evolving phase-space parameters\, and HOM 
 wakefields\, implemented natively in RF-Track\, are excited and evaluated 
 over successive recirculation passes\, including the accumulation of wakef
 ields from previously transported bunches. The methodology supports assess
 ment of the achievable beam performance within the iSAS cryomodules\, thei
 r future use in ERL-based colliders\, and the evaluation of overall energy
 -recovery efficiency.\n\nhttps://indico.psi.ch/event/19558/
LOCATION:WBGB/019
URL:https://indico.psi.ch/event/19558/
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