  The IFMIF-DONES facility will be dedicated to the irradiation of structural
materials planned for the use in future fusion reactors such as DEMO
(Demonstration Fusion Power Plant). The potentialities of the IFMIF-DONES
facility to complement its principal purpose by other experiments that would
open the facility to other communities is addressed in this work. It concerns a
study based on simulations to evaluate the neutronic performances of
IFMIF-DONES in an hall dedicated to complementary experiments where neutrons
can be transported. With the simple beam tube geometry of 4.5~cm entrance
diameter studied in this work we have shown that a collimated fast-neutron beam
of about 2~10$^{10}$~n/cm$^2$/s is available in the hall. Adding a moderator in
the hall with neutron extraction lines would allow to get thermal neutron beams
of about ~10$^{6}$-10$^{7}$~n/cm$^2$/s for dedicated experiments. The results
show that IFMIF-DONES has the potentialities to be a medium-flux neutron
facility for most of the neutron applications.
