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SUMMARY:Non-linear dynamics modelling in accelerators\, applied to beam-be
am long-range compensation for HL-LHC
DTSTART:20211015T140000Z
DTEND:20211015T150000Z
DTSTAMP:20231129T221134Z
UID:indico-event-1076623@indico.cern.ch
DESCRIPTION:Zoom Password: 480806\n\n \n\nNon-Linear dynamics modellin
g in accelerators\, applied to beam-beam long-range compensation for HL-LH
C \n\nAbstract: \n\nThe accurate modelling of trajectories in accelerato
rs\, in particular for long simulation times or large particle amplitudes
necessitate the employment of so called "symplectic" integration schemes.
These schemes preserve the conservative nature of motion\, i.e. the energy
\, as defined through the Hamiltonian function. For the accelerator Hamilt
onian\, it is possible to employ a new set of high order symplectic integr
ators (CSABAm). One benefit of these integrators is their strong numerical
stability\, which results from the inclusion of only forward integration
steps\, independent of the order of accuracy. The power of these integrato
rs\, with respect to accuracy and computational time\, is demonstrated in
simulations of simple lattices and benchmarked against other well establis
hed integration schemes in the accelerator community. A concrete applicati
on is then presented\, namely the effectiveness of simple DC wires in orde
r to compensate the detrimental effect of beam-beam long-range interaction
s in the High Luminosity Large Hadron Collider. Based on the estimation of
beam dynamics indicators correlated with beam lifetime\, such as dynamic
aperture and frequency map analysis\, it is shown how these long range bea
m-beam interactions can be very well mitigated\, for different scenarios o
f the HL-LHC\, with a proper choice of their current and distance from the
beam\, while respecting machine protection restrictions.\n\nhttps://indic
o.cern.ch/event/1076623/
LOCATION:CERN
URL:https://indico.cern.ch/event/1076623/
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