title: A novel approach in the free-electron laser diagnosis based on a pixelated phosphor detector.
abstract: A new high-performance method for the free-electron laser (FEL) focused beam diagnosis has been successfully tested at the FERMI FEL in Trieste, Italy. The novel pixelated phosphor detector (PPD) consists of micrometric pixels produced by classical UV lithography and dry etching technique, fabricated on a silicon substrate, arranged in a hexagonal geometry and filled with suitable phosphors. It has been demonstrated that the overall resolution of the system has increased by reducing the diffusion of the light in the phosphors. Various types of PPD have been produced and tested, demonstrating a high resolution in the beam profile and the ability to measure the actual spot size shot-to-shot with an unprecedented resolution. For these reasons, the proposed detector could become a reference technique in the FEL diagnosis field.
authors.affiliation: IOM Laboratorio Nazionale TASC, CNR, AREA Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Alessia
authors.initials: A
authors.lastname: Matruglio
authors.affiliation: IOM Laboratorio Nazionale TASC, CNR, AREA Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Simone
authors.initials: S
authors.lastname: Dal Zilio
authors.affiliation: Detector and Instrumentation Laboratory, Elettra Sincrotrone Trieste, AREA Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Rudi
authors.initials: R
authors.lastname: Sergo
authors.affiliation: Beamlines Spectroscopy/Scattering, Elettra Sincrotrone Trieste, Area Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Mincigrucci
authors.affiliation: Graduate School in Nanotechnology, University of Trieste, Piazzale Europa 1, Trieste 34127, Italy.
authors.forename: Cristian
authors.initials: C
authors.lastname: Svetina
authors.affiliation: Beamlines Spectroscopy/Scattering, Elettra Sincrotrone Trieste, Area Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Emiliano
authors.initials: E
authors.lastname: Principi
authors.affiliation: Mechanical, Vacuum and Optical Engineering, Elettra Sincrotrone Trieste, Area Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Nicola
authors.initials: N
authors.lastname: Mahne
authors.affiliation: Mechanical, Vacuum and Optical Engineering, Elettra Sincrotrone Trieste, Area Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Raimondi
authors.affiliation: Beamlines Microscopy/Diffraction, Elettra Sincrotrone Trieste, Area Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Alessio
authors.initials: A
authors.lastname: Turchet
authors.affiliation: Beamlines Spectroscopy/Scattering, Elettra Sincrotrone Trieste, Area Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Masciovecchio
authors.affiliation: IOM Laboratorio Nazionale TASC, CNR, AREA Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Lazzarino
authors.affiliation: Detector and Instrumentation Laboratory, Elettra Sincrotrone Trieste, AREA Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Cautero
authors.affiliation: IOM Laboratorio Nazionale TASC, CNR, AREA Science Park Basovizza, SS 14, Km 163.5, Trieste 34149, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Zangrando
keywords: beam diagnosis; detector; free-electron laser; phosphors; pixelated phosphor detector