UHV Crossed Flexure Slit Precision 4 Jaw Aperture Bilaterally adjustable slits mounted at 90-degrees Coplanar knife edges Width & Height: continuously tunable 5 to 4000-microns Accuracy: 10% of any setting Width Resolution: 1-micron Jaw Parallelism: 1-micron Jaw Length: 4 mm or less Manual or step motor drive systems Electrical isolation of jaws (optional) Active or heat sink cooling (optional) 6" all metal seal mount

McPherson precision UHV crossed flexure slit provides two, closely adjacent, crossed slit pairs. Each pair of blades is bilaterally adjustable (opens about fixed center.) This slit can create square or rectangular apertures of great precision. A derivative of our precision UHV flexure slit this crossed design delivers a very clean design with no bearings and no sliding surfaces. Easily calibrated widths and removable micrometers facilitate baking.

Cooled slit jaws for this design use wire braid and massive, or actively water-cooled heat sinks, to transfer heat. Directly water cooled masks or occulters can be integrated. Electrically isolated slit jaws with wiring and a feed through for bias and current monitoring (for beam position, etc.) are available. Augment your purchase with McPherson slit accessories such as view port adapters, phosphor coated visualization flags, and mounting platforms.