Download JPARC Horn 1 Outer Conductor Middle Connection

JPARC Horn 1 Outer
Conductor Middle Connection
Larry Bartoszek
Bartoszek Engineering
Horn with insulating gap in the
middle
• Before a connection between the horn and
stripline can be worked out, the connection
that holds the two halves of the outer
conductor must be worked out
• The outer conductor must be water-tight
and hold off the stripline voltage across an
insulating gap
– I don’t show water seals in the following
pictures but they could be like MiniBooNE’s
Design Features
• The design shown has features similar to
the Brookhaven horn in that bolts were
isolated from the conductors by cupshaped insulators.
– BNL made theirs from G-10
– JPARC probably needs ceramic
• The ~600V voltage may make the surface
path length for hold-off short and easy to
satisfy
Exploded view of two halves of outer conductor
These are threaded rods with nuts
welded to the ends because I couldn’t
find metric bolts long enough
This insulator passes through both halves of
the conductor and isolates the threaded rod
from the outer conductor
This is the downstream insulator that
allows the long end of the upstream
insulator to nest inside.