  The ENUBET ERC project (2016-2021) is studying a facility based on a narrow
band beam capable of constraining the neutrino fluxes normalization through the
monitoring of the associated charged leptons in an instrumented decay tunnel. A
key element of the project is the design and optimization of the hadronic
beamline. In this proceeding we present progress on the studies of the proton
extraction schemes. We also show a realistic implementation and simulation of
the beamline.
