6533b839fe1ef96bd12a5a7a
RESEARCH PRODUCT
Manufacturing an active X-ray mirror prototype in thin glass
Bianca SalmasoG. Di CiccaSalvatore VariscoMarta CivitaniM. Di BellaCarlo PelliciariLuisa SciortinoDaniele SpigaMarco BarberaMarco BarberaAlfonso ColluraRoberto CandiaMarco RivaGiuseppe LulloStefano BassoU. Lo Cicerosubject
Nuclear and High Energy PhysicsMaterials scienceactive optic02 engineering and technologyactive optics; piezoelectric actuators; thin glass mirrors; X-ray mirrors; Instrumentation; Nuclear and High Energy Physics; RadiationSettore ING-INF/01 - Elettronica01 natural sciencesSignallaw.invention010309 opticsSettore FIS/05 - Astronomia E AstrofisicaOpticslaw0103 physical sciencesInstrumentationNuclear and High Energy PhysicRadiationbusiness.industrypiezoelectric actuatorthin glass mirrorActive optics021001 nanoscience & nanotechnologyLaserPiezoelectricitySynchrotronPhotolithography0210 nano-technologyActuatorbusinessX-ray mirrorVoltagedescription
Adjustable mirrors equipped with piezo actuators are commonly used at synchrotron and free-electron laser (FEL) beamlines, in order to optimize their focusing properties and sometimes to shape the intensity distribution of the focal spot with the desired profile. Unlike them, X-ray mirrors for astronomy are much thinner in order to enable nesting and reduce the areal mass, and the application of piezo actuators acting normally to the surface appears much more difficult. There remains the possibility to correct the deformations using thin patches that exert a tangential strain on the rear side of the mirror: some research groups are already at work on this approach. The technique reported here relies on actively integrating thin glass foils with commercial piezoceramic patches, fed by voltages driven by the feedback provided by X-rays, while the tension signals are carried by electrodes on the back of the mirror, obtained by photolithography. Finally, the shape detection and the consequent voltage signal to be provided to the piezoelectric array will be determined by X-ray illumination in an intra-focal setup at the XACT facility. In this work, the manufacturing steps for obtaining a first active mirror prototype are described.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-07-27 | Journal of Synchrotron Radiation |