RT Journal Article T1 Positioning of diffuse metallic target with a point diffractive interferometer A1 Arines Piferrer, Justo A1 Candal Parafita, Alba A1 Martín Iglesias, José Luis PB Elsevier SN 0143-8166 YR 2022 FD 2022 LK http://hdl.handle.net/10347/28418 UL http://hdl.handle.net/10347/28418 LA eng NO Optics and Lasers in Engineering 154 (2022) 107041 NO Proton acceleration obtained by focusing an ultraintense ultrafast laser beam presents the technological and metrological challenge of correctly placing diffuse metallic target at the focus of the laser beam. In this work we present the use of the Point diffractive interferometer for solving this problem. We studied the accuracy and precision of the system at repositioning the metallic target after displacing and horizontally tilting the target out of its reference position. We achieved an accuracy at repositioning the target at its reference position of 1.50 µm and 6 arcmin with a precision of 1.40 µm and 5.7 arcmin. Our work shows the high accuracy provided by a system as simple as the Point Diffraction interferometer even at positioning surfaces with diffuse reflection DS Minerva RD 27 abr 2026