JJ X-ray Products
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Double Converging Collimator
Throughout the years, many types of Neutron Double Converging Collimators have been produced by JJ X-Ray. The double converging collimator is an advanced radial collimator where foils are angled both in the vertical and horizontal plane and often with very small angular foil separation.
As with our Radial Collimators, they include intermediate collimation systems over larger angular ranges and finer collimation systems over smaller angular ranges. See also examples in our collimator catalog.
Especially with our larger designs, limiting the total system weight has been at the center of our attention.
For further details, please click on the design parameters.
Collimator with Cryocooler
A cold head collimator option has been added to our collimator portfolio. The collimator consists of beryllium wedges in a frame of copper placed inside a vacuum vessel. The cryocooler that is positioned on the top of the vacuum vessel works as a close-cycle cryostat that will cool the beryllium wedges via its connection to the copper frame.
Collimator with Cryocooler
A cold head collimator option has been added to our collimator portfolio. The collimator consists of beryllium wedges in a frame of copper placed inside a vacuum vessel. The cryocooler that is positioned on the top of the vacuum vessel works as a close-cycle cryostat that will cool the beryllium wedges via its connection to the copper frame.
Categories:
Technical Specifications
Angular range
Up to 45 degrees horizontally and 60 degrees vertically
Aperture size
Customized
Angle between foils
From <0.1 degrees to several degrees
Foils
80-125 µm thick Gadolinium Oxide or Boron-10 coated PETP or Kapton Foil
Spacers
Aluminum with thickness determined by collimation requirements
Covers
Open apertures are delivered with thin protective aluminum covers
Common options
Coatings can be various alternative materials
The frame may be coated with absorbing material
Vacuum compatible parts and coatings can be furnished
Extra dense foil coatings may be furnished for lower resolution collimators to limit cross-talk.
Non-magnetic materials
Fixtures and lifting positions
