MLM Stages System High precision motion table with all hardware

2020-2021 | CHESS

Design, production, testing, and delivery of a high precision motion table with all hardware to CHESS.

This motion system will carry and precisely position the optical elements and their surrounding vacuum chambers for a multi-layer monochromator on Sector 3 at CHESS.

Two stacks of motion stages, one for each optic, rest on a large block of granite which is levelled on wedge-driven feet. The upstream stack provides roll and pitch motions to the crystal, along with two-axis translation perpendicular to the X-ray beam. The downstream stack provides pitch, two-axis translation across the beam, and 800 mm of travel along the beam for energy selection.

All the stages, except for the long horizontal stage, are minor customizations of catalogue standards at AVS US which simplified the design cycle and provided a reliable solution to the customer with minimal risk. Customizations included the addition of gear reducers to increase the pitch stage resolution and the provision of specialized hard stops which could be cut to size by the customer as needed.

Client: CHESS