Cooled Slits | FMB Oxford

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Cooled Slits

Our standard cooled slits consist of two slit blades that move together in opposite directions to vary the aperture. The slits are stepper motor driven and fitted with limit switches and datum switches. Encoders can be fitted as an option for continuous position feedback.

Slit blades are made from tungsten or tungsten carbide and are chamfered to a knife edge.

The slit mechanisms are mounted on a flange with the slit blades precisely aligned to the face of the flange and tested for parallelism and precision of motion.

Maximum slit aperture To suit
Aperture resolution <3μm
Aperture parallelism <10μm
StrokeEach blade 40 or 80mm
Blade material Tungsten or tungsten carbide
Blade thickness 3mm – 10mm
Mounting flange 150mm or 200mm OD Conflat flange
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