Cooling system
One of the 3 position for the slug is the cooling down position : the
temperature of the slug had risen during the beam exposure, and since
it's in vacuum, we need a cooling system.

The cooling plate makes the contact with the slug, as shown on the picture bellow, the support plate with the base of the vacuum chamber.
It is also covered with fibers to allow good temperature transferts with the slug.
The ceramic plate isolate the cooling plat from the rest (saving of time).

cooling plate :
detail
detail : fibers on top of the plate
contact slug-cooler