A new 3D positioner for the analytical mapping of non-flat objects under accelerator beams

Calligaro, Thomas and Arean, Louis and Pacheco, Claire and Lemasson, Quentin and Pichon, Laurent and Moignard, Brice and Boust, Clotilde and Bertrand, Loic and Schoeder, Sebastian and Thoury, Mathieu and Rosta, László and Szentmiklósi, László and Füzi, János and László, Zoltán and Heirich, Viktor (2020) A new 3D positioner for the analytical mapping of non-flat objects under accelerator beams. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 467. pp. 65-72. ISSN 0168-583X

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Abstract

We report the development of a 3D positioner for the elemental mapping of non-flat surfaces of heritage targets and its implementation in the external beam of the AGLAE accelerator, a joint research activity of the IPERION-CH European program.The positioner operates in two steps: 1) object surface is digitized using a 3D scanner implemented in the beamline. Surface points are interpolated onto a rectangular grid suitable for beam scanning. 2) Object is scanned under the beam using X/Y/Z stages holding a hexapod robot for rotations. During scanning, target surface is positioned with the Z stage and oriented perpendicular to the beam using hexapod rotations. Areas up to 100 × 100 mm 2 with a resolution of 50 µ m and 30° curvature of can be mapped on objects of 200 mm and 5 kg max. System operation was tested by recording PIXE maps on the polychrome decoration of a curved porcelain pot.

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