  Beam-beam effects in eRHIC, the proposed ERL-based Electron-Ion Collider
(EIC) at BNL, have several unique features distinguishing them from those in
hadron-colliders and lepton-colliders. Taking the advantage of the fact that
the electron beam is used only once, we expect the luminosity to be 10 times
greater than for the ring-ring collision scheme with similar parameters.
However, without instituting proper treatments, the quality of electron and
hadron beams can undergo degradation or even beam loss, driven by the beam-beam
interactions. We will discuss the harmful effects, including the disruption and
mismatch effect of the electron beam, the kink instability and the noise
heating of the ion beam and the possible countermeasures.
