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Study of the beam-beam limit in e+e- circular colliders

Technical Report ·
DOI:https://doi.org/10.2172/826860· OSTI ID:826860
Beam-beam effects limit the luminosity of circular colliders. Once the bunch population exceeds a threshold, the luminosity increases at a slower rate. This phenomenon is called the beam-beam limit. Onset of the beam-beam limit has been analyzed with various simulation methods based on the weak-strong and strong-strong models. We have observed that an incoherent phenomenon is mainly concerned in the beam-beam limit. The simulation have shown that equilibrium distributions of the two colliding beams are distorted from Gaussians when the luminosity is limited. The beam-beam limit is estimated to be {zeta} {approx} 0.1 for a B factory with damping time of several thousand turns.
Research Organization:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Organization:
USDOE Office of Science (US)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
826860
Report Number(s):
SLAC-PUB-10401
Country of Publication:
United States
Language:
English