About testing $\nu_\mu$ oscillation with $\Delta m^2$ smaller than 0.001 $eV^2$ with the CERN Proton Synchrotron

We study the feasibility of a long-baseline neutrino experiment from CERN to Gran Sasso LNGS Laboratories using the CERN PS accelerator. Baseline and neutrino energy spectrum are suitable to explore a region of the Dm2 and sin2(thetat) parameters space which is not reached by K2K, the first experiment that will test at accelerator the atmospheric neutrino anomaly put in evidence by Super Kamiokande