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Figure 2
Scheme illustrating the working principle of the variable cam. The crystal rotation axis R1 is defined by two flexure hinges, while the cam rotates around R2. The component A rotates around R2, part B can be moved aside and its center is at distance Δ from R2 defining the eccentricity of the cam. When A rotates, the center of B moves around R2, while part C is connected through a ball-bearing and moves up and down. To transmit the motion of C to the crystal without mechanical play, two other flexure hinges (point R3) are necessary.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 19| Part 3| March 2012| Pages 417-424
doi:10.1107/S0909049512009703
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