  Within the scattering approach, we develop a model for adiabatic quantum
pumping in hybrid normal/superconductor systems where several superconducting
leads are present. This is exploited to study Andreev-interference effects on
adiabatically pumped charge in a 3-arm beam splitter attached to one normal and
two superconducting leads with different phases of the order parameters. We
derive expressions for the pumped charge through the normal lead for different
parameters for the scattering region, and elucidate the effects due to Andreev
interference. In contrast to what happens for voltage-driven transport, Andreev
interference does not yield in general a pumped current which is a symmetric
function of the superconducting-phase difference.
