Several non invasive techniques are applied in the field of preservation and restoration of artefacts which exploit the peculiar properties of the interaction of X-rays with matter. Among these, radiography and tomography are well established while the K-edge method for the analysis of the distribution of pigments on canvas is being proposed. In the context of the neu_ART project, an imaging laboratory has been developed at the Centro Conservazione e Restauro “La Venaria Reale”, in collaboration with the National Institute for Nuclear Physics (INFN) and the Physics Department of the University of Torino. It comprises a X-ray apparatus for radiography and computed tomography and a scanning system for elemental inspection on canvas. A very versatile system was assembled and exploited for 2D and 3D studies of large dimensions objects. A quasi-monochromatic X-ray beam with a microstrip silicon detector moved together on a scanning system are the key elements of the innovative K-edge method. The monochromatization is achieved by exploiting the Bragg interference of polychromatic X-rays in a mosaic crystal whose tilt angle respect to the X-ray source can be set in order to select the suitable beam energy for the chemical element of interest. A detailed description of the facility and some case studies will be presented.

The new X-ray imaging facility at the Centro Conservazione e Restauro “La Venaria Reale

MILA, Giorgia;LO GIUDICE, Alessandro;RE, ALESSANDRO;SACCHI, Roberto
2014-01-01

Abstract

Several non invasive techniques are applied in the field of preservation and restoration of artefacts which exploit the peculiar properties of the interaction of X-rays with matter. Among these, radiography and tomography are well established while the K-edge method for the analysis of the distribution of pigments on canvas is being proposed. In the context of the neu_ART project, an imaging laboratory has been developed at the Centro Conservazione e Restauro “La Venaria Reale”, in collaboration with the National Institute for Nuclear Physics (INFN) and the Physics Department of the University of Torino. It comprises a X-ray apparatus for radiography and computed tomography and a scanning system for elemental inspection on canvas. A very versatile system was assembled and exploited for 2D and 3D studies of large dimensions objects. A quasi-monochromatic X-ray beam with a microstrip silicon detector moved together on a scanning system are the key elements of the innovative K-edge method. The monochromatization is achieved by exploiting the Bragg interference of polychromatic X-rays in a mosaic crystal whose tilt angle respect to the X-ray source can be set in order to select the suitable beam energy for the chemical element of interest. A detailed description of the facility and some case studies will be presented.
2014
ART’14 - 11th International Conference on non-destructive investigations and microanalysis for the diagnostics and conservation of cultural and environmental heritage
Madrid, Spain
11/13 giugno 2014
Art'14
AEND-AIPnD
IND86
IND86
9788469705223
http://www.art2014.net/
G. Mila; F. Albertin; P. Buscaglia; G. Dughera; M. Gambaccini; A. Lo Giudice; P. Mereu; M. Nervo; N. Pastrone; F. Petrucci; F. Prino; L. Ramello; A. Re; R. Sacchi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/147997
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