The ENUBET monitored neutrino beam: moving towards the implementation of a high precision cross section experiment at CERN

Monitored neutrino beams represent a powerful and cost effective tool to suppress cross section related systematics for the full exploitation of data collected in long baseline oscillation projects like DUNE and Hyper-Kamiokande. In the last years the NP06/ENUBET project has demonstrated that the systematic uncertainties on the neutrino flux can be suppressed to 1% in an accelerator based facility where charged leptons produced in kaon and pion decays are monitored in an instrumented decay tunnel. This contribution will present the final design of the ENUBET beamline, the experimental setup for high purity identification of charged leptons in the tunnel instrumentation and the framework for the assessment of the final systematics budget on the neutrino fluxes. We will also present the results of a test beam exposure at CERN-PS of the Demonstrator: a fully instrumented 1.65 m long section of the ENUBET instrumented decay tunnel. Finally the physics potential of the ENUBET beam with ProtoDUNEs as neutrino detectors and plans for its implementation in the CERN North Area will be discussed.