A5077461637- Magnetic confinement fusion research
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Radiation Detection and Scintillator Technologies
- Fusion materials and technologies
- Ionosphere and magnetosphere dynamics
- Superconducting Materials and Applications
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Satellite Communication Systems
- Gamma-ray bursts and supernovae
- Interstitial Lung Diseases and Idiopathic Pulmonary Fibrosis
- Plasma Diagnostics and Applications
- Radiation Therapy and Dosimetry
- Astrophysics and Cosmic Phenomena
- Vasculitis and related conditions
- Laser-induced spectroscopy and plasma
- Distributed systems and fault tolerance
- Sarcoidosis and Beryllium Toxicity Research
- Nuclear Materials and Properties
- Network Traffic and Congestion Control
- High-Energy Particle Collisions Research
- Mobile Agent-Based Network Management
University of Rome Tor Vergata
1989-2024
National Agency for New Technologies, Energy and Sustainable Economic Development
2015-2024
University of the Basque Country
2022
Material Physics Center
2022
University of Potsdam
2021
Royal Military Academy
2020
Sapienza University of Rome
2016-2018
Japan External Trade Organization
2015
Nini Hospital
2012
Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
2010
ABSTRACT We present a catalog of high-energy gamma-ray sources detected by the Large Area Telescope (LAT), primary science instrument on Fermi Gamma-ray Space (Fermi) , during first 11 months phase mission, which began 2008 August 4. The First -LAT (1FGL) contains 1451 and characterized in 100 MeV to GeV range. Source detection was based average flux over month period, threshold likelihood Test Statistic is 25, corresponding significance just 4σ. 1FGL includes source location regions,...
Abstract The JET 2019–2020 scientific and technological programme exploited the results of years concerted engineering work, including ITER-like wall (ILW: Be W divertor) installed in 2010, improved diagnostic capabilities now fully available, a major neutral beam injection upgrade providing record power 2019–2020, tested technical procedural preparation for safe operation with tritium. Research along three complementary axes yielded wealth new results. Firstly, plasma delivered scenarios...
The 2014–2016 JET results are reviewed in the light of their significance for optimising ITER research plan active and non-active operation. More than 60 h plasma operation with first wall materials successfully took place since its installation 2011. New multi-machine scaling type I-ELM divertor energy flux density to is supported by principle modelling. relevant disruption experiments modelling reported a set three mitigation valves mimicking setup. Insights L–H power threshold Deuterium...
Abstract For the past several years, JET scientific programme (Pamela et al 2007 Fusion Eng. Des . 82 590) has been engaged in a multi-campaign effort, including experiments D, H and T, leading up to 2020 first with 50%/50% D–T mixtures since 1997 ever plasmas ITER mix of plasma-facing component materials. this purpose, concerted physics technology was launched view prepare campaign (DTE2). This paper addresses key elements developed by directly contributing preparation. intense preparation...
Abstract An overview is presented of the progress since 2021 in construction and scientific programme preparation Divertor Tokamak Test (DTT) facility. Licensing for building has been granted at end 2021. Cat. A radiologic source also 2022. The toroidal field magnet system progressing. prototype 170 GHz gyrotron produced it now under test on FALCON design vacuum vessel, poloidal coils civil infrastructures completed. shape first DTT divertor agreed with EUROfusion to different plasma exhaust...
The objective of thermonuclear fusion consists producing electricity from the coalescence light nuclei in high temperature plasmas. most promising route to envisages confinement such plasmas with magnetic fields, whose studied configuration is tokamak. Disruptions are catastrophic collapses affecting all tokamak devices and one main potential showstoppers on a commercial reactor. In this work we report how, deploying innovative analysis methods thousands JET experiments covering isotopic...
Abstract The fusion reaction between deuterium and tritium, D ( T,n ) 4 He is the main source of energy in future thermonuclear reactors. Alpha-particles -ions) born with an average 3.5 MeV transferring to thermal plasma during their slowing down, should provide self-sustained D–T burn. adequate confinement α -particles essential efficient heating bulk steady burning a reactor plasma. That why fusion-born -particle studies have been priority task second experiments (DTE2) on Joint European...
A prototype Single crystal Diamond Detector (SDD) was installed at the Joint European Torus (JET) in 2013 along an oblique line of sight and demonstrated possibility to carry out neutron spectroscopy measurements with good energy resolution detector stability discharges heated by neutral beam injection radio-frequency waves. Starting from these positive results, within Vertical Neutron Spectrometer project Torus, we have developed a pixelated instrument consisting matrix 12 independent SDDs,...
Since the 2012 IAEA-FEC Conference, FTU operations have been largely devoted to runaway electrons generation and control, exploitation of 140 GHz electron cyclotron (EC) system liquid metal limiter elements. Experiments on shown that measured threshold electric field for their is larger than predicted by collisional theory can be justified considering synchrotron radiation losses. A new control algorithm was developed tested in presence a current plateau, allowing minimize interactions with...
Abstract The paper presents an overview of the design status Radial Neutron Camera (RNC), that, together with Vertical Camera, will provide, through reconstruction techniques applied to measured line-integrated neutron fluxes, time resolved measurement ITER and α-source profile (i.e. emissivity, neutrons emitted per unit volume). RNC is composed two subsystems, In-Port Ex-Port located, respectively, inside outside Plug Equatorial Port #01. subsystem in a more advanced stage since it has...
On the FTU tokamak, collective Thomson scattering (CTS) diagnostic was renewed for investigating possible excitation of parametric decay instabilities (PDI) by electron cyclotron (EC) or CTS probe beams in presence magnetic islands and measure their effects on EC power absorption.
The intrinsic limited toroidal electric field (0.3 V m−1) in devices with superconducting poloidal coils (ITER, JT-60SA) requires additional heating, like electron cyclotron (EC) waves, to initiate plasma and sustain it during the burn-through phase. FTU tokamak has contributed studying perspective of EC assisted breakdown. Afterward, a new experimental modeling activity addressing study start-up configuration close ITER one (magnetic field, oblique injection, polarization) been performed is...
Abstract Alfvén eigenmode (AE) instabilities driven by alpha-particles have been observed in D- 3 He fusion experiments on the Joint European Torus (JET) with ITER-like wall. For efficient generation of from reaction, three-ion radio frequency scenario was used to accelerate neutral beam injection 100 keV deuterons higher energies core mixed plasmas at high concentrations He. A large variety fast-ion magnetohydrodynamic modes were observed, including elliptical eigenmodes (EAEs) mode numbers...
The biorthogonal decomposition analysis of signals from an array Mirnov coils is able to provide the spatial structure and temporal evolution magnetohydrodynamic (MHD) instabilities in a tokamak. Such can be adapted data acquisition elaboration system suitable for fast real time applications such as instability detection disruption precursory markers computation. This paper deals with description this technique applied Frascati Tokamak Upgrade (FTU).
One of the main problems in tokamak fusion devices concerns capability to operate at a high plasma density, which is observed be limited by appearance catastrophic events causing loss confinement. The commonly used empirical scaling law for density limit Greenwald limit, predicting that maximum achievable line-averaged along central chord depends only on average current density. However, has been exceeded experiments case peaked profiles, indicating edge real parameter responsible limit....