  KM3NeT will be a network of deep-sea neutrino telescopes in the Mediterranean
Sea. The KM3NeT/ARCA detector, to be installed at the Capo Passero site
(Italy), is optimised for the detection of high-energy neutrinos of cosmic
origin. Thanks to its geographical location on the Northern hemisphere,
KM3NeT/ARCA can observe upgoing neutrinos from most of the Galactic Plane,
including the Galactic Centre. Given its effective area and excellent pointing
resolution, KM3NeT/ARCA will measure or significantly constrain the neutrino
flux from potential astrophysical neutrino sources. At the same time, it will
test flux predictions based on gamma-ray measurements and the assumption that
the gamma-ray flux is of hadronic origin. Assuming this scenario, discovery
potentials and sensitivities for a selected list of Galactic sources and to
generic point sources with an $E^{-2}$ spectrum are presented. These spectra
are assumed to be time independent. The results indicate that an observation
with $3\sigma$ significance is possible in about six years of operation for the
most intense sources, such as Supernovae Remnants RX\,J1713.7-3946 and Vela Jr.
If no signal will be found during this time, the fraction of the gamma-ray flux
coming from hadronic processes can be constrained to be below 50\% for these
two objects.

High Energy Astrophysical Phenomena