  Since the end of the eighties and in response to a reported increase in the
total neutrino flux in the Homestake experiment in coincidence with solar
flares, solar neutrino detectors have searched for solar flare signals. Even
though these detectors have used different solar flare samples and analyses,
none of them has been able to confirm the possible signal seen by Homestake.
Neutrinos from the decay of mesons, which are themselves produced in collisions
of accelerated ions with the solar atmosphere would provide a novel window on
the underlying physics of the hadronic acceleration and interaction processes
during solar flares. Solar flare neutrino flux measurements would indeed help
to constrain current parameters such as the composition of the accelerated
flux, the proton/ion spectral index and the high energy cutoff or the magnetic
configuration in the interaction region. We describe here a new way to search
for these neutrinos by considering a specific solar flare sample and a data
driven time window template which will improve the likelihood of neutrino
detection.
