  Using radio and X-ray data of two powerful radiogalaxies we attempt to find
out the role that radio jets (in terms of composition and power) as well as
intracluster magnetic fields play in the formation, propagation and
acceleration of cosmic rays. For this study we have selected the powerful radio
galaxies Hercules A and 3C\,310 because of the presence of ring-like features
in their kpc-scale radio emission instead of the usual hotspots. These two
FR1.5 lie at the center of galaxy cooling flow clusters in a dense environment.
  We observed the unique jets of Hercules both in kpc- (multifrequency VLA
data) and pc-scales (EVN observations at 18 cm). We have also observed the core
and inner jets of 3C310 at 18 cm using global VLBI. We report on the work in
progress.
