A5052991360- Adaptive optics and wavefront sensing
- Particle Accelerators and Free-Electron Lasers
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Particle accelerators and beam dynamics
- Optical Systems and Laser Technology
- Advanced X-ray Imaging Techniques
- Astronomical Observations and Instrumentation
- Optical Wireless Communication Technologies
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Photonic and Optical Devices
- Inertial Sensor and Navigation
- Gyrotron and Vacuum Electronics Research
- Astrophysical Phenomena and Observations
- Scientific Computing and Data Management
- Laser Design and Applications
- Radiation Detection and Scintillator Technologies
- Temporomandibular Joint Disorders
- Photocathodes and Microchannel Plates
- Silicon Carbide Semiconductor Technologies
- Multilevel Inverters and Converters
- Nuclear Physics and Applications
- Advanced Measurement and Metrology Techniques
- Advanced Fiber Laser Technologies
Arcetri Astrophysical Observatory
2018-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2023-2024
National Institute for Astrophysics
2019-2024
Laboratoire d’Astrophysique de Marseille
2023
Osservatorio Astronomico di Padova
2022
National Institute of Optics
2022
Elettra-Sincrotrone Trieste S.C.p.A.
2007-2021
Parthenope University of Naples
2015
Aalborg University
2012
Scuola Superiore Sant'Anna
2008
Abstract Gamma-ray bursts (GRBs) are classified into long and short events. Long GRBs (LGRBs) associated with the end states of very massive stars, while (SGRBs) linked to merger compact objects. GRB 200826A was a peculiar event, because by definition it an SGRB, rest-frame duration ∼0.5 s. However, this event energetic soft, which is consistent LGRBs. The relatively low redshift ( z = 0.7486) motivated comprehensive, multiwavelength follow-up campaign characterize its host, search for...
FERMI is a seeded free-electron laser (FEL) facility located at the Elettra laboratory in Trieste, Italy, and now user operation with its first FEL line, FEL-1, covering wavelength range between 100 20 nm. The second FEL-2, high-gain harmonic generation double-stage cascade 20-4 nm, has also completed commissioning call been recently opened. An overview of typical operating modes presented.
This paper focuses on the design, thermal loading, and reliability of a three-level neutral-point-clamped back-to-back full-scale converter for 10-MW direct-drive wind turbine equipped with permanent-magnet synchronous generator. The performance is strongly influenced by behavior semiconductor devices their mission profile which directly affects lifetime cost entire converter. Therefore, simulation platform developed in Matlab/Simulink PLECS environment to analyze dynamics system using...
HR\,8799 is a young planetary system composed of 4 planets and double debris belt. Being the first multi-planetary discovered with direct imaging technique, it has been observed extensively since 1998. This wide baseline astrometric measurements, counting over 50 observations in 20 years, permits detailed orbital dynamical analysis system. To explore parameters planets, their history, planet-to-disk interaction, we made follow-up during VLT/SPHERE GTO program. We obtained 21 observations,...
The decommissioning of nuclear installations, as well the possible necessary accident remediations, requires physical presence human operators in potentially radiologically hostile environments. number active reactors worldwide is greater than 400, and most them are 40 to 50 years old, thus implying that soon they will have be dismantled. In framework H2020 CLEANDEM project, a small robotic vehicle being developed equipped with series different sensors for areas significantly contaminated by...
An understanding of collective effects is fundamental importance for the design and optimisation performance modern accelerators. In particular, an accelerator with strict requirements on beam quality, such as a free electron laser (FEL), highly dependent correspondence between simulation, theory experiments in order to correctly account effect coherent synchrotron radiation (CSR), other effects. A traditional approach simulation codes utilise analytic one-dimensional approximation CSR...
The Natural Guide-star Adaptive Optics (NGAO) mode of the Giant Magellan Telescope (GMT) is one two diffraction-limited AO modes under development by GMTO and its partner institutions. It will use Secondary Mirror (ASM) for wavefront correction, a Guide star Wavefront Sensor (NGWS) unit featuring visible-light sensing channels to measure aberrations, including phasing errors between seven segments GMT. first NGWS channel features modulated pyramid sensor (PWFS) second Holographic Dispersed...
We exploit the increased sensitivity of recently installed AO SOUL at LBT to obtain new high-spatial-resolution NIR images massive young stellar object IRAS20126+4104 and its outflow. aim derive jet proper motions kinematics, as well study photometric variability by combining novel performances together with previous images. used both broad-band ($K_{s}$, $K'$) narrow-band (Br$\gamma$, H2) observations from a number cameras (UKIRT/UFTI,SUBARU/CIAO,TNG/NICS,LBT/PISCES,and LBT/LUCI1) maps...
This paper focuses on the design, thermal loading and reliability of a three-level Neutral Point Clamped (3-L NPC) back-to-back full scale converter for 10 MW direct-drive wind turbine equipped with Permanent Magnet Synchronous Generator (PMSG). The performance is strongly influenced by behaviour semiconductor devices their mission profile which directly affects lifetime cost whole converter. Therefore, simulation platform developed in Matlab/Simulink PLECS environment to analyse dynamics...
The accurate and stable synchronization between electron bunch external laser is a key requirement for the successful operation of an externally seeded free laser. This particularly stringent when longitudinally compressed to sub-ps durations. We present analytical description arrival-time jitter that, supported by experimental evidence, allows identification specific, dominant sources. measurements were carried out as function length compression factor in FERMI@Elettra linac. behavior...
The Large Binocular Telescope Interferometer (LBTI) combines the light from two 8.4 m primary mirrors of LBT for interferometry and adaptive optics (AO) imaging. With high performance, state-of-the-art AO systems secondary mirrors, a cryogenic instrument, an edge-to-edge baseline 23 m, LBTI is unique instrument sensitive, high-angular resolution high-contrast thermal infrared observations. After successful completion NASA-funded HOSTS nulling survey exozodiacal dust, our team now completing...
The Adaptive Optics (AO) performance significantly depends on the available Natural Guide Stars (NGSs) and a wide range of atmospheric conditions (seeing, Cn2, windspeed, . ). In order to be able easily predict AO performance, we have developed fast algorithm - called TIPTOP producing expected Point Spread Function (PSF) for any existing observing modes (SCAO, LTAO, MCAO, GLAO), conditions. This tool takes its roots in an analytical approach, where simulations are done Fourier domain. allows...
To facilitate easy prediction and estimation of adaptive optics performance, we have created a fast algorithm named TipTop. This generates the expected AO point spread function (PSF) for any existing observing mode (SCAO, LTAO, MCAO, GLAO) set atmospheric conditions. Developed in Python, TipTop is based on an analytical approach, with simulations performed Fourier domain, enabling very computation times (less than second per PSF) efficient exploration extensive parameter space. can be used...
In the framework of H2020 CLEANDEM project a small robotic vehicle was equipped with series different sensors, developed for preliminary inspection areas possibly contaminated by radiation. Such unmanned allows to identify dangerous locations prior possible start human operations. One devices, named MiniRadMeter, is compact, low-cost sensor perform gamma and neutron radiation field mapping environment. The MiniRadMeter successfully tested in simulated mission four "hidden"...
The SOUL systems at the Large Bincoular Telescope can be seen such as precursor for ELT SCAO systems, combining together key technologies EMCCD, Pyramid WFS and adaptive telescopes. After first light of upgraded system on September 2018, going through COVID technical stops, we now have all 4 working on-sky. Here, report about some control improvements performance characterized during commissioning. upgrade allows us to correct more modes (500) in bright end increases sky coverage providing...
Here, we present the status of an ongoing project aimed at developing a point spread function (PSF) reconstruction software for adaptive optics (AO) observations. In particular, test first time implementation pyramid wave-front sensor data on our algorithms. As step in assessing its reliability, applied to bright, on-axis, point-like sources using two independent sets observations, acquired with single-conjugated AO upgrade Large Binocular Telescope. Using only telemetry data, reconstructed...
The Gaia Multipeak (GMP) technique can be used to identify large numbers of dual or lensed active galactic nucleus (AGN) candidates at subarcsec separation, allowing us study both multiple supermassive black holes (SMBHs) in the same galaxy and rare, compact systems. observed samples test predictions models SMBH merging when (1) selection function GMP is known, (2) each system has been classified as a AGN, an AGN/star alignment. Here we show that very efficient for separations above 0.15″...
SHARK-NIR is an instrument which provides direct imaging, coronagraphic dual band imaging and low resolution spectroscopy in Y, J H bands, taking advantage of the outstanding performance Large Binocular Telescope AO systems. observations will be provided used combination with SHARK-VIS (operating V band) LMIRCam LBTI from K to M bands), a way exploit simultaneous three different wavelengths. A wide variety techniques have been implemented SHARK-NIR, ranging conventional ones such as Gaussian...
This paper describes a system to record incisal and condylar movements. It consists of two Charge Coupled Device (CCD) cameras that detect the position markers fixed face, real-time hardware recognize software for three-dimensional reconstruction mandibular The subject sat upright in front was asked perform jaw recorded coordinates were fed into computer converted kinematic data by mathematical algorithm implemented on an AT IBM personal computer. Dedicated calculated head movements...