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UHV Slits for SLAC



The high precision UHV slit system was designed for

SLAC National Accelerator Laboratory. The total apertures is 25mm x 25mm. Each blade is actuated independently by the 4 actuators mounted to the slit body. This slit system is designed to be especially easy to service. There are no bearing rails, limit switches, encoders, or drive screws within the slit chamber. This eliminates the need for special lubricants and allows the actuators to be adjusted, aligned, and serviced with the system installed in the beamline.


Each slit unit has 4 fiduciary marks provided. All UHV sections are vacuum tested to better than 5x10-10 torr and have a leak rate of less than 2x10–10 mbar l-1s-1.