Speaker
Yuan Zhang
(IHEP-CAS)
Description
With large Piwinski angle collision, both luminosity and beam-beam tune shifts depend on the bunch length. The longitudinal beam dynamics also plays an essential role for several new effects, such as beamstrahlung, coherent X-Z instability and 3D flip-flop. The combined effect of longitudinal impedance and beam-beam interaction should be taken into account for the collider luminosity optimization. The impact on the coherent X-Z instability is focused. Simulation results are shown for different schemes: CDR, higher harmonic cavity, large momentum compaction and 4IPs.
Author
Yuan Zhang
(IHEP-CAS)
Co-authors
Emanuela Carideo
(Sapienza Universita e INFN, Roma I (IT))
Mikhail Zobov
Mauro Migliorati
(University of Rome "LA SAPIENZA")
