  Core collapse supernovae are a huge source of all flavor neutrinos. The
flavor composition, energy spectrum and time structure of the neutrino burst
from a galactic supernova can provide information about the explosion mechanism
and the mechanisms of proto neutron star cooling. Such data can also give
information about the intrinsic properties of the neutrino such as flavor
oscillations. One important question is to understand to which extend can the
supernova and the neutrino physics be decoupled in the observation of a single
supernova. In this paper we discuss the possibility to probe the neutrino
mixing angle \th13 and the type of mass hierarchy from the detection of
supernova neutrinos with a liquid argon TPC detector. Moreover, describing the
supernova neutrino emission by a set of five parameters (average energy of the
different neutrino flavors, their relative luminosity and the total supernova
binding energy), we quantitatively study how it is possible to constrain these
parameters. A characteristic feature of the liquid argon TPC is the
accessibility to four independent detection channels ((1) elastic scattering
off electrons, (2) charged neutrino and (3) antineutrino and (4) neutral
currents on argon nuclei) which have different sensitivities to
electron-neutrino, anti-electron-neutrino and other neutrino flavors (muon and
tau (anti)neutrinos). This allows to over-constrain the five supernova and the
flavor mixing parameters and to some extent disentangle neutrino from supernova
physics.
