Muon storage rings for a beam-systematic-free measurement of neutrino and antineutrino cross-sections at low energy

Precision neutrino cross-section measurements at low energies will be necessary to improve the results of the current and future big neutrino experiments. In order to achieve precision neutrino cross- sections, that will yield a comprehensive understand of the underlying physics, a rather extended program will be required: (1) measurement from kinematical thresholds up to a few GeV; (2) well known and controlled neutrino flux; (3) study of neutrinos and antineutrinos and possibly nu /sub e/ and nu /sub mu / flavors; (4) on several nuclear target; (5) with detectors capable of exclusive final state reconstruction. While the "standard" choice advocated relies on currently existing or on future "traditional" neutrino beams, that will provide very high intensities at near sites, we advocate that neutrinos from muon storage rings provide a better choice to criterias (1)-(3). The currently available statistics from the CERN AD and the FNAL-Debuncher would provide statistical precisions better than 10% in typ. 200 MeV bins in the low energy range. (9 refs).