Geometry Optimization of the ISIS Muon Target

ISIS is the world’s most successful pulsed spallation
neutron source that provides beams of neutrons and muons
that enable scientists to study the properties of the matter at
the atomic level. Restrictions are imposed on the muon target
regarding thickness as this will affect the proton transmission
to the second neutron target. However, it could
be possible to improve the muon production by optimizing
the target geometry. Currently the muon target is a 7 mm
thick graphite plate oriented at 45 degrees with respect to
the proton beam. A set of slices placed at variable distance
is proposed instead of the 7 mm thick graphite target. The
performance of the set of slices is examined in this paper