G. Cautero
A5053743661- Particle Detector Development and Performance
- Advanced X-ray Imaging Techniques
- Radiation Detection and Scintillator Technologies
- Electron and X-Ray Spectroscopy Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Medical Imaging Techniques and Applications
- Advanced Semiconductor Detectors and Materials
- CCD and CMOS Imaging Sensors
- Advanced X-ray and CT Imaging
- Advancements in Photolithography Techniques
- Diamond and Carbon-based Materials Research
- Particle Accelerators and Free-Electron Lasers
- Advanced Chemical Physics Studies
- Surface and Thin Film Phenomena
- Electronic and Structural Properties of Oxides
- Semiconductor Quantum Structures and Devices
- Photocathodes and Microchannel Plates
- Advanced Optical Sensing Technologies
- Advanced Electron Microscopy Techniques and Applications
- Force Microscopy Techniques and Applications
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Atomic and Molecular Physics
- Integrated Circuits and Semiconductor Failure Analysis
- Particle physics theoretical and experimental studies
Elettra-Sincrotrone Trieste S.C.p.A.
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
2015-2024
University of Trieste
2014-2024
Politecnico di Milano
2021-2022
University of Saskatchewan
2022
AREA Science Park
1999-2021
Institute of Structure of Matter
2021
Istituto Officina dei Materiali
2021
University of Cologne
2021
University of Udine
2018
The extensive upgrade of the experimental end-station SPECTROMICROSCOPY-3.2L beamline at Elettra synchrotron light source is reported. After upgrade, angle-resolved photoemission spectroscopy from a submicrometre spot and scanning microscopy images monitoring photoelectron signal inside selected acquisition angle energy windows can be performed. As test case, single flakes highly oriented pyrolitic graphite imaging with image contrast owing to rotation band dispersion different are presented.
Abstract The Silicon Vertex Detector of Belle II is a state-of-the-art tracking and vertexing system based on double-sided silicon strip sensors, designed fabricated by large international collaboration in the period 2012–2018. Since 2019 it has been operation providing high quality data with small number defective channels (<1%), hit-finding efficiency (>99%), good signal-to-noise ratio (well excess 10 for all sensor configurations tracks). Together control over alignment, these are...
Synchrotron radiation time structure is becoming a common tool for studying dynamic properties of materials. The main limitation often the wide domain user would like to access with pump-probe experiments. In order perform photoelectron spectroscopy experiments over scales from milliseconds picoseconds it mandatory measure at which each measured was created. For this reason usual CCD camera-based two-dimensional detection electron energy analyzers has been replaced by new delay-line detector...
A velocity map imaging/ion time-of-flight spectrometer designed specifically for pump–probe experiments combining synchrotron and laser radiations is described. The in-house built delay line detector can be used in two modes: the high spatial resolution mode coincidence mode. In a kinetic energy of 6% has been achieved. to improve signal-to-noise ratio either by using gate count electrons only when present or recording coincidences with ion formed ionization process.
The Low Density Matter (LDM) beamline has been built as part of the FERMI free-electron laser (FEL) facility to serve atomic, molecular and cluster physics community. After commissioning phase, it received first external users at end 2012. design characterization LDM photon transport system is described, detailing optical components beamline.
Abstract PERCIVAL is a novel soft X-ray detection system designed for the needs of modern microscopy. By integrating it into TwinMic end-station at Elettra Sincrotrone Trieste, we conducted an exploratory computational microscopy experiment on biological samples, aiming evaluating entire in real use-case scenario. We present methodology to convert RAW data and our high-resolution image reconstructions.
The efficient detection of low-energy X-rays at the keV level with best possible energy resolution requires application silicon drift detectors (SDDs) and advanced specific integrated circuits (ASICs). Their widespread use in material sciences, alongside dedicated basic science projects, has long been restricted to single, selected SDD elements working low temperatures. This is because limits incurring quite elaborated planar technology production process need reach very leakage current...
We use a spatially resolved, direct spectroscopic probe for electronic structure with an additional sensitivity to chemical compositions investigate high-quality single crystal samples of La(1/4)Pr(3/8)Ca(3/8)MnO3, establishing the formation distinct insulating domains embedded in metallic host at low temperatures. These are found be least order magnitude larger size compared previous estimates and exhibit memory effects on temperature cycling absence any perceptible inhomogeneity,...
We have determined the effective attenuation length of photoelectrons over range kinetic energies from 4 to 6 keV in Co, Cu, Ge, and ${\mathrm{Gd}}_{2}{\mathrm{O}}_{3}$. The intensity substrate (Si) overlayer core level peaks was measured as a function thickness wedge-shaped overlayers. Experimental values vary between 45--50 \AA{} at 60--65 Ge. Smaller (30 50 \AA{}, respectively) are found Our results confirm that, for different classes materials, high energy photoemission spectroscopy has...
The Super-ESCA beamline has been designed for high resolution core level spectroscopy of adsorbates on single crystal surfaces using soft x-ray synchrotron radiation. It receives the light from an 81 period undulator with 5.6 cm and 4.5 m length in storage ring ELETTRA. tunability this insertion device, at a electron energy 2.0 GeV connected modified SX700 monochromator allows performance experiments photon range 100–2000 eV. This is now operational first absorption spectra are presented...
The instrument VOLPE (volume photoemission from solids) is an experimental setup dedicated to high energy (PE) experiments. equipped with electrostatic hemispherical spectrometer especially designed analyze electrons (up 10 keV) resolving power. In order attain resolution of a few tens millielectron volts, we and constructed input lens system, stability power supplies, low dark-count detector readout electronics. system has been tested now operational on the ID16 beamline at European...
We show that it is possible to use a multichannel electron detector in zone plate based photoemission spectromicroscopy snap shot mode reduce the total acquisition time for given counting by 50% relative standard scanning while preserving feature of spectra. describe result tests performed at Elettra using its microbeam (150 nm) together with 48-channel designed PHOIBOS 100 analyzer optimized extremely small x-ray sources. also give short summary technical features and one calibration...
We present high-resolution valence band and core level spectra of silver for photoelectron kinetic energies up to 8 keV. At these we estimate a surface contribution less than 3%. Taking advantage the favourable sp/d relative cross-sections, comparison with calculated density states is presented. observe an increasing photoemission intensity when approaching Fermi level, which assign free-electron-like character in 5p-band, whereas principal s-like located at bottom d-band. The difference...
The valence and core-level photoelectron spectra of gaseous indole, 2,3-dihydro-7-azaindole, 3-formylindole have been investigated using VUV soft X-ray radiation supported by both an ab initio electron propagator density functional theory calculations. Three methods were used to calculate the outer band photoemission spectra: Green function, partial third order, renormalized order. While all gave acceptable description spectra, last method yielded very accurate agreement, especially for...
Here, we report on a novel experimental apparatus for performing time-resolved soft x-ray absorption spectroscopy in the sub-ns time scale using non-hybrid multi-bunch mode synchrotron radiation. The present setup is based variable repetition rate Ti:sapphire laser (pump pulse) synchronized with ~500 MHz radiation bunches and detection system that discriminates singles out significant photon pulses by means of custom made counting unit. whole has been validated measuring evolution L(3) edge...
With the increased brilliance of state-of-the-art Synchrotron radiation sources and advent Free Electron Lasers enabling revolutionary science with EUV to X-ray photons comes an urgent need for suitable photon imaging detectors. Requirements include high frame rates, very large dynamic range, single-photon counting capability low probability false positives, (multi)-megapixels.
We present an high-resolution 3D (X,Y,t) imager for time-resolved experiments based on time-to-space conversion. The system uses Cross Delay-Line detectors (CDL) particle identification and a fully-configurable digital processor Field Programmable Gate Arrays (FPGAs) the image reconstruction. instrument reaches spatial resolution of 45 μm FWHM (i.e.,18 r.m.s.) temporal precision 15 ps r.m.s.. detection rate achieved is 10 Mcps, with dead-time below 7 ns, leading to global throughput up 6...
In the course of 1998, Spectromicroscopy beamline at ELETTRA completed commissioning and succeeded in performing its first test experiments. The is designed to perform photoemission experiments with high spatial resolution, which obtained by focusing radiation a small spot on sample means multilayer-coated Schwarzschild Objective. Three objectives are currently available; these operate photon energies 74, 95, 110 eV. A review presented performances achieved together an outlook future...