A5016640641- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Superconducting Materials and Applications
- Ionosphere and magnetosphere dynamics
- Antenna Design and Analysis
- Gyrotron and Vacuum Electronics Research
- Fusion materials and technologies
- Electromagnetic Scattering and Analysis
- Advanced Antenna and Metasurface Technologies
- Electromagnetic Compatibility and Measurements
- Laser-Plasma Interactions and Diagnostics
- Insect and Pesticide Research
- Electromagnetic Simulation and Numerical Methods
- Electromagnetic Launch and Propulsion Technology
- Insect and Arachnid Ecology and Behavior
- Antenna Design and Optimization
- Nuclear Physics and Applications
- Underwater Vehicles and Communication Systems
- Electrical Fault Detection and Protection
- Electrostatic Discharge in Electronics
- Nuclear reactor physics and engineering
- Energy Harvesting in Wireless Networks
- Microwave Engineering and Waveguides
- Plant and animal studies
Polytechnic University of Turin
2016-2025
National Agency for New Technologies, Energy and Sustainable Economic Development
2011-2022
University of Padua
2022
Southwestern Institute of Physics
2021
Max Planck Institute for Plasma Physics
2011-2016
Culham Science Centre
2012
Royal Military Academy
2011
Czech Technical University in Prague
2011
Ghent University
2011
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2011
One of the most popular technologies adopted for indoor localization is ultrawideband impulse radio (IR-UWB). Due to its peculiar characteristics, it able overcome multipath effect that severely reduces capability receivers (sensors) estimate position transmitters (tags) in complex environments. In this article, we introduce a new low-cost real-time locating system (RTLS) does not require time synchronization among sensors and uses one-way communication scheme reduce cost complexity tags....
The European DEMO is a pulsed device with pulse length of 2 hours. functions devoted to the heating and current drive system are: plasma breakdown, ramp-up flat-top where fusion reactions occur, control during phase, finally ramp-down. EU-DEMO project was in Pre-Concept Design Phase 2014-2020, meaning that some cases, design values precise requirements from physics point view were not yet frozen. A total 130 MW considered for all phases plasma: flat top, 30 required neoclassical tearing...
The demand for a predictive tool to help in designing ion-cyclotron radio frequency (ICRF) antenna systems today's fusion experiments has driven the development of codes such as ICANT, RANT3D, and early TOPICA (TOrino Polytechnic Ion Cyclotron Antenna) code. This paper describes substantive evolution formulation implementation that presently allow it handle actual geometry ICRF antennas (with curved, solid straps, general-shape housing, Faraday screen, etc) well an accurate plasma...
A comparison of the ASDEX Upgrade 3-strap ICRF antenna data with linear electromagnetic TOPICA calculations is presented.The substantiates a reduction local electric field at radially protruding plasma-facing elements as relevant approach for minimizing tungsten (W) sputtering in conditions when slow wave strongly evanescent.The measured reaction time-averaged RF current limiters to feeding variations less sensitive than predicted by calculations.This likely have been caused temporal and...
Abstract Over the last 30 years, harmonic radars have been effective only in tracking insects flying at low altitude and over flat terrain. We developed an innovative radar, implementing most advanced radar techniques, which covers a large field of view elevation (with angular aperture about 24°) can track up to range 500 m. show all components this new its first application, Vespa velutina (yellow-legged Asian hornet). This is invasive species which, although indigenous South-East Asia,...
Abstract The yellow‐legged A sian hornet is an invasive species of wasps, indigenous to the S outheast sia but recently spreading in outhern E urope. Because its exponential diffusion and serious threat local honeybee colonies (and humans as well), restraint measures are currently under investigation. We developed tested harmonic radar capable tracking flying trajectory these insects, once equipped with a small transponder, their natural environment. Several hornets were captured close...
The performance on plasma of the antennas proposed ITER ICRF system is evaluated by means antenna 24 × impedance matrix provided TOPICA code and confirmed interpreted semi-analytical ANTITER II (summarized in an appendix). From this analysis following characteristics can be derived: (1) a roughly constant power capability entire 40–55 MHz frequency band with same maximum voltage eight feeding lines obtained for all considered heating current drive phasings account broadbanding effect service...
FAST is a new machine proposed to support ITER experimental exploitation as well anticipate DEMO relevant physics and technology. aimed at studying, under burning plasma conditions, fast particle (FP) physics, operations wall interaction in an integrated way. has the capability approach all scenarios significantly closer than present day experiments using deuterium plasmas. The necessity of achieving performance with moderate cost led conceiving compact tokamak (R = 1.82m, 0.64m) high...
This paper summarizes the operational experience of ion cyclotron resonant frequency (ICRF) ITER-like antenna on JET aiming at substantially increasing power density in range requirements for ITER combined with load resiliency. An in-depth description its commissioning, aspects and achieved performances is presented.
Recent achievements in studies of the effects ICRF (Ion Cyclotron Range Frequencies) power on SOL (Scrape-Off Layer) and PWI (Plasma Wall Interactions) ASDEX Upgrade (AUG), Alcator C-Mod, JET-ILW are reviewed. Capabilities to diagnose model effect DC biasing associated impurity production at active antennas magnetic field connections described. The experiments show that near-fields can lead not only E × B convection, but also modifications density, which for C-Mod limited a narrow region...
Abstract The yellow‐legged Asian hornet is an invasive species of wasps, indigenous the South‐East Asia but quickly spreading in Southern Europe. Because its exponential diffusion and serious threat to local honey bee colonies humans as well, restraint measures are under investigation. Among them, harmonic radar described (Ecology Evolution, 6, 2016 2170) already proved be a quite effective way follow hornets their nests; it fact capable tracking flying trajectory these insects, once...
In this paper we validate the finite element code RAPLICASOL, which models radiofrequency wave propagation in edge plasmas near ICRF antennas, against calculations with TOPICA code. We compare output of both codes for ASDEX Upgrade 2-strap antenna, and a 4-strap WEST-like antenna. Although RAPLICASOL requires considerably fewer computational resources than TOPICA, find that predicted quantities experimental interest (including reflection coefficients, coupling resistances, - -matrix entries,...
This paper describes recent upgrades of TOPICA (Torino Politecnico Ion Cyclotron Antennas) formulation and implementation. is a code capable handling both the actual geometry ion cyclotron (IC) antennas an accurate plasma description; it can predict performances IC launchers with unprecedented accuracy numerical efficiency, validated against data measured in operation conditions. In reported upgrade, new multi-cavity approach introduced, producing significant savings terms CPU memory...
Three identical new WEST Ion Cyclotron Resonance Heating (ICRH) antennas have been designed, assembled then commissioned on plasma from 2013 to 2019.The ICRH system is both load-resilient and compatible with long-pulse operations.The three successfully operated together in 2019 2020.The load resilience capability has demonstrated the antenna feedback controls for phase matching developed.The breakdown detection systems validated protected antennas.The use of combination Lower Hybrid...
Harmonic radars can be generally used to track very small (1.5 cm) and lightweight (15 mg) passive tags; as an example, they have been adopted various insects for almost 30 years now. In most of the cases, their usage was motivated by entomological interest in better knowing habits observed insect; fewer applications, like ours, prevailed need protecting environment from invasive species. However, despite purpose research involving radars, not a lot engineering resources invested during last...
An innovative scanning harmonic radar has been recently developed for tracking insects in complex landscapes. This movable technology tested on an invasive hornet species (Vespa velutina) detecting the position of their nests environment, framework early detection strategy. The new model proved to be effective hornets either open landscapes, hilly environments and areas characterised by presence more obstacles, such as woodlands urban areas. Hornets were effectively tracked landscapes a mean...
This paper documents the complete analysis and optimization of ITER ion cyclotron range frequency (ICRF) launcher using TOPICA code, carried out in frame EFDA design activities. The possibility to simulate detailed geometry an ICRF antenna front a realistic plasma description obtain input parameters radiated near electric field distribution is paramount importance evaluate predict overall system performances. Upon starting from reference geometry, we pursued electrical IC came with final...
The major aspects linked to the use of JET auxiliary heating systems: NBI, ICRF and LHCD, in new ITER-like wall (JET-ILW) are presented. We show that although there were issues related operation each system, efficient safe plasma was obtained with room for higher power. For NBI up 25.7MW safely injected; had be tackled mainly beam shine-through re-ionisation before its entrance into plasma. 5MW coupled L-mode 4MW H-mode; main areas concern RF-sheaths heat loads impurities production. LH, 2.5...
In the past years, one of focal points JET experimental programme was on ion-cyclotron resonance heating (ICRH) studies in view design and exploitation ICRH system being developed for ITER. this brief review, some main achievements obtained field during last 5 years will be summarized. The results reported here include important aspects a more engineering nature, such as (i) appropriate RF feeding circuits optimal load resilient operation (ii) test compact high-power density antenna array,...
Use of new 3-strap ICRF antennas with all-tungsten (W) limiters in ASDEX Upgrade results a reduction the W sources at antenna and content confined plasma by least factor 2 compared to W-limiter 2-strap used past. The is observed broad range shapes. In multiple locations frame, limiter source has minimum when RF image currents are decreased cancellation current contributions central outer straps. JET ITER-like wall, produces about 20% less main chamber radiation old A2 antennas. However...
Abstract ICRF antenna development for DEMO the pre-conceptual phase is carried out by merging existing knowledge about multi-strap ITER, JET and ASDEX upgrade antennas. Many aspects are taken over adapted to DEMO, including mechanical design RF performance optimization strategies. The minimization of ICRF-specific plasma-wall interactions aimed at optimizing feeding power balance, a technique already proven in practice. Technological limits elaborated components ITER system serve as...