Wrong-sign muon appearance with an ICARUS-like detector at a neutrino factory

We describe the signals from a neutrino factory beam in an ICARUS/NOE-like detector. We discuss the detection of (a) νe→νμ and (b) νe→ντ and the backgrounds. Wrong-sign leptons from various deep inelastic neutrino processes will not be serious for (a) but may limit the detection of (b) depending on the oscillation amplitude.