Research Masterclass in Radiotherapy Physics 2017

A compact microbeam source A multi-slit collimator for divergent beams

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At the European Synchrotron microbeams are shaped by a multi-slit collimator with parallel slits

-For a divergent source, parallel slits off axis would block the beam

-Therefore slit openings need to account for the beam divergence

-We chose a plate thickness of 5 mm

-Manufacturing needs to be carried out with ±1.5’ accuracy for the inclination of each slit!

-Positioning with ±2.5 µm accuracy