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Synchrotron/Neutron/Fusion » Synchrotron » High Precision Slits » Custom Slits » UHV, high precision, slit for MAX IV
UHV, high precision, slit for MAX IV

https://www.maxiv.se/node/275

 

ADC engineered a new family of custom UHV, high precision, slit for MAX IV. The slit has 4 independent blades with a maximum aperture of 25mm x 25mm.

 

Description:

    These slit system were designed for UHV and can be used for apertures up to 25mm x 25mm. Blades are actuated independently by 4 actuators mounted on the slit body. This slit system was designed to be robust and easily serviceable. All of the actuator components (bearing rails, ballscrews, limit switches, encoders, and ballscrews) are located outside of the UHV chamber. This eliminates the need for special lubricants on the actuator bearings. It also allows for the actuators to be adjusted, aligned, and serviced with the system installed on the beamline. A rigid connection between the slit blade and the actuator guarantees that encoder readings at the actuator are accurate. Modal analysis with FEA and physical tests were done during the design to make sure there are no resonant frequencies below 200 Hz at the blade. The UHV chamber has 4 spare DN40 CF ports for connecting pumping and diagnostics. Edge-welded UHV bellows connect the chamber to the blade actuator. Blades can be removed through the inside diameter of the bellows. The bellows themselves can be removed with the unit still installed on the beamline.

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