3D electromagnetic analysis of the MHD control system in RFX-mod upgrade

RFX-mod
is
a
device
equipped
with
a
state-of-the-art
system
for
active
control
of
MHD
instabilities,
which
consists
of
192
saddle
coils
and
192
radial
field
sensors.
In
order
to
further
extend
its
operational
space
an
upgrade
of
its
magnetic
front-end
is
now
being
studied.
In
this
paper
we
focus
on
the
implementation
of
fast
and
efficient
algorithms
for
the
3D
electromagnetic
analysis
of
the
effect
of
the
designed
magnetic
front-end
on
the
MHD
control
system
in
RFX-mod2,
in
the
presence
of
complex
conducting
structures
surrounding
the
plasma.