• shareshare
  • link
  • cite
  • add
auto_awesome_motion View all 5 versions
Publication . Preprint . 2019

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

Calligaro, Thomas; Arean, Luis; Pacheco, Claire; Lemasson, Quentin; Pichon, Laurent; Moignard, Brice; Boust, Clotilde; +8 Authors
Published: 01 Jan 2019
Publisher: HAL CCSD
Country: France
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 mm2 with a resolution of 50 µm 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.

Neutron imaging, Synchrotron imaging, Ion beam imaging, Hexapod, 3D target, 3D positioner, [SPI.MAT]Engineering Sciences [physics]/Materials, [CHIM.MATE]Chemical Sciences/Material chemistry, [CHIM]Chemical Sciences, [SPI.AUTO]Engineering Sciences [physics]/Automatic, [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, [SHS.MUSEO]Humanities and Social Sciences/Cultural heritage and museology, [SHS.ART]Humanities and Social Sciences/Art and art history

14 references, page 1 of 2

[1] Campbell J.L., Cookson J.A., Nucl. Instrum. Methods B 3 (1984) 185-197.

[2] Duerden P., Cohen D.D., Claytone, Bird J.R., Ambrose W.R., Leech B.F., Anal. Chem. 51 (1979) 2350-2354.

[3] Bird J.R., Duerden P., Wilson D.J., Ion beam techniques in Archeology and the Arts, Nucl. Sci. Appl. 1 (1983) 357-516.

[4] Maxwell J.A., Campbell J.L., Teesdale W.J., Nucl. Instrum. Methods B 43 (1989) 218-230.

[5] Campbell J.L., Boyd N.I., Grassi N., Bonnick P., Maxwell J.A., Nucl. Instrum. Methods B 268 (2010) 3356-3363.

[6] Mayer M., SIMNRA user's guide. Tech. Rep. IPP 9/113, Max-Planck-Institut für Plasmaphysik, Garching, 1997

[7] Johansson S.A.E., Campbell J.L., PIXE A Novel Technique for Elemental Analysis, John Wiley & Sons Ltd, 1988.

[9] Dran J.C., Salomon J., Calligaro T., Walter P., Nucl. Instrum. Methods B 219-220 (2004) 7-15.

[14] Gough V.E., Proc. Auto Div. Inst. Mech. Eng. (1956) 392-395.

[15] Stewart D., Proc. Inst. Mech. Eng. 180 (1) (1966) 371-386.