Water target at the ISIS spallation source: neutrino and neutron fluxes

Effects arising from a water target places in the ISIS spallation facility, used for both neutron and neutrino experiments, are considered. Calculations are presented for the neutrino flux from stopped μ+ decay, and for the neutron fluxes from the ISIS moderators, for several versions of a water target situated upstream of the ISIS spallation source. Two possible configurations, that enhance the neutrino flux by 39–80% and produce relatively little reduction in neutron flux, are outlined.