Beam-Beam Effects in the Ring-Ring Version of eRHIC

Beam-beam effects in the ring-ring version of eRHIC was studied with a self-consistent beam-beam simulation by using the particle-in-cell method. Beam-beam limits of the two beams were examined as the thresholds of the onset of the coherent beam-beam instability. For the proposed luminosity, the bunch intensities optimized in consideration of the beam-beam effect were discussed. As the beam-beam interaction in the eRHIC is traditionally considered as a strong-weak case, this represents an example of the coherent beam-beam effect in the strong-weak case of beam-beam interactions.