  We propose to use the change of the energy lost by ionization, measured by
silicon detectors, before and after the passage through a bulk of dense matter,
for unambiguously detecting highly massive single-charged particles, which
could be produced at LHC, in particular Winos with mass in the TeV range, whose
c-tau is expected to be some cms long, although the method is also efficient
for masses down to 10GeV. For convenience, a QED derivation of the modern
version of the Bethe-Block formula is also provided.
