The ENUBET project is studying a narrow band neutrino beam where lepton production can be monitored at single particle level in an instrumented decay tunnel and that could provide a 1% measurement of the neutrino flux at source.
The three body semi-leptonic decay of kaons monitored by large angle positron production offers a fully controlled $\nu_{e}$ source at the GeV scale for a new generation of short baseline experiments.
The ENUBET Collaboration presented at NuFact2018 the first end-to-end simulation of the beamline, the physics performance and the results of the test beam performed on the positron tagger.
We reported ENUBET expected fluxes for $\nu_{e}$ and $\nu_{\mu}$