  It is proposed to complement the ESS proton linac with equipment that would
enable the production, concurrently with the production of the planned ESS beam
used for neutron production, of a 5 MW beam of 10$^{23}$ 2.5 GeV protons per
year in microsecond short pulses to produce a neutrino Super Beam, and to
install a megaton underground water Cherenkov detector in a mine to detect
$\nu_e$ appearance in the produced $\nu_\mu$ beam. Results are presented of
preliminary calculations of the sensitivity to neutrino CP violation and the
mass hierarchy as a function of the neutrino baseline. The results indicate
that, with 8 years of data taking with an antineutrino beam and 2 years with a
neutrino beam and a baseline distance of around 400 km, CP violation could be
discovered at 5 $\sigma$ (3 $\sigma$) confidence level in 48% (73%) of the
total CP violation angular range. With the same baseline, the neutrino mass
hierarchy could be determined at 3 $\sigma$ level over most of the total CP
violation angular range. There are several underground mines with a depth of
more than 1000 m, which could be used for the creation of the underground site
for the neutrino detector and which are situated within or near the optimal
baseline range.
