A5052618226- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Fusion materials and technologies
- AI in Service Interactions
- Multimodal Machine Learning Applications
- Radiation Effects in Electronics
- Muon and positron interactions and applications
- Topic Modeling
- Silicon Carbide Semiconductor Technologies
- VLSI and Analog Circuit Testing
- Advanced MEMS and NEMS Technologies
- Distributed and Parallel Computing Systems
- Speech and dialogue systems
- Embedded Systems Design Techniques
- Atomic and Molecular Physics
- Nuclear and radioactivity studies
- Particle Detector Development and Performance
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- High voltage insulation and dielectric phenomena
- Laser-Plasma Interactions and Diagnostics
National Research Council
2023
National Agency for New Technologies, Energy and Sustainable Economic Development
2007-2022
University of Padua
2015-2022
University of Glasgow
2022
Institute for the Science and Technology of Plasmas
2021
ITER
2019
Institute of Market Economy, Social Policy and Law
2013
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro
2013
Localized heating has been observed in unexpected positions on anodic surfaces a multi-electrode device insulated by vacuum gaps. In double polarity experiments, counter-intuitive behavior of current-voltage characteristic also observed. The phenomena could depend cascade effect charged particles exchanged between electrodes and mutual correlation particle trajectories electrode occurring during the high voltage conditioning phase. Attractors regions ascribed to regenerative processes...
Neutral Beam Injectors (NBI), which need to be strongly optimized in the perspective of DEMO reactor, request a thorough understanding negative ion source used and multi-beamlet optics. A relatively compact RF source, named NIO1 (Negative Ion Optimization 1), with 9 beam apertures for total H− current 130 mA, 60 kV acceleration voltage, is being installed at Padua, Consorzio RFX, provide test bench optimizations framework accompanying activities support ITER NBI facility. construction status...
The High Voltage Padova Test Facility is an experimental device realized to investigate the high voltage insulation in vacuum support of negative neutral beam injector prototype for ITER, MITICA. Moreover, experiment aims give a contribution on understanding holding vacuum, as physical phenomenon. Two stainless steel electrodes, with few cm gap chamber, achieve saturation breakdown value (up 400 kV) after about ten hours. A highly time resolved X-ray diagnostic has been recently installed...
The neutral beam injectors of the ITER experiment will rely on negative ion sources to produce 16.7 MW beams H/D particles accelerated at 1 MeV. prototype these was built and is currently operated in SPIDER (Source for Production Ions Deuterium Extracted from a Radio frequency plasma) experiment, part Neutral Beam Test Facility Consorzio RFX, Padua. In SPIDER, H−/D− source coupled three grid, 100 kV acceleration system. One main goals experimentation uniformly maximize extracted current...
The NIO1 project consisting of a 60 kV ion source (9 beamlets 15 mA each H−) is jointly developed by Consorzio RFX and INFN-LNL, with the purpose providing test source, capable working in continuous mode condition similar to larger sources for Neutral Beam Injectors. modular design allows quick replacement upgrading parts. While main body construction progressing at industry, some parts were separately participating institution, as described following. A water free Carbon Fiber Composite...
Enhancement of negative ion sources for production large beams is a very active research field nowadays, driven from demand plasma heating in nuclear fusion devices and accelerator applications. As versatile test bench, the source NIO1 (Negative Ion Optimization 1) being commissioned by Consorzio RFX INFN. The nominal beam current 135 mA at −60 kV divided into 9 beamlets, with multiaperture extraction electrodes. sustained 2 MHz radiofrequency power supply, standard matching box. A High...
The high voltage Padova test facility (HVPTF) is an experimental device for the study of HV insulation in vacuum, support realization prototype a neutral beam injector International Thermonuclear Experimental Reactor (ITER), named megavolt ITER and concept advancement (MITICA). investigates physical phenomena underlying holding particular mechanisms causing breakdowns electrode conditioning process. At HVPTF, inside vacuum chamber, two stainless steel electrodes, separated by few centimeters...
Stable and uniform beams with low divergence are required in particle accelerators; therefore, beyond the accelerated current, measuring beam current spatial uniformity stability over time is necessary to assess performance, since these parameters affect perveance thus optics. For high-power operating long pulses, it convenient directly measure a non-intercepting system due heat management requirement. Such needs be capable of vacuum presence strong electromagnetic fields overvoltages,...
The High Voltage Padova Test Facility (HVPTF) is an experimental device for investigating HV insulation in vacuum, support of the realization MITICA, prototype a neutral beam injector ITER. facility investigates physical phenomena underlying voltage holding such as mechanisms causing breakdowns and electrode conditioning process, along with testing technical solutions to increase breakdown threshold. Inside high vacuum chamber, two stainless steel electrodes, separated by few centimetres...
This contribution regards the Radio Frequency (RF) transmission line of Megavolt ITER Injector and Concept Advancement (MITICA) experiment. The original design considered copper coaxial lines 1″ 5/8, but thermal simulations under operating conditions showed maximum temperatures at regime not compatible with prescription component manufacturer. Hence, an optimization was necessary. Enhancing radiation increasing conductor size were for optimization: analyses carried out to calculate...
We tackle the challenge of building real-world multimodal assistants for complex tasks. describe practicalities and challenges developing deploying GRILLBot, a leading (first second prize winning in 2022 2023) system deployed Alexa Prize TaskBot Challenge. Building on our Open Assistant Toolkit (OAT) framework, we propose hybrid architecture that leverages Large Language Models (LLMs) specialised models tuned specific subtasks requiring very low latency. OAT allows us to define when, how...