E. Sartori
A5025663758- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Superconducting Materials and Applications
- Fusion materials and technologies
- Particle Accelerators and Free-Electron Lasers
- Gyrotron and Vacuum Electronics Research
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Mass Spectrometry Techniques and Applications
- Electrostatic Discharge in Electronics
- Metal and Thin Film Mechanics
- Dust and Plasma Wave Phenomena
- Induction Heating and Inverter Technology
- Radiation Effects in Electronics
- Health Systems, Economic Evaluations, Quality of Life
- Nuclear reactor physics and engineering
- Gas Dynamics and Kinetic Theory
- Plasma Applications and Diagnostics
- Ion-surface interactions and analysis
- Advanced Thermodynamics and Statistical Mechanics
- Magnetic Properties and Applications
- Nuclear Materials and Properties
- Earth Systems and Cosmic Evolution
- Ionosphere and magnetosphere dynamics
National Agency for New Technologies, Energy and Sustainable Economic Development
2015-2024
University of Padua
2015-2024
National Research Council
2018-2019
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro
2018-2019
Istituto Nazionale di Fisica Nucleare
2015
Institute of Market Economy, Social Policy and Law
2015
University of Milan
2013
Japan Atomic Energy Agency
2012
Abstract In ion sources of neutral beam injectors (NBIs) for fusion, multi-grid, multi-aperture accelerators are used. Accelerators typically optimized by numerical tools, usually taking the e-fold divergence as a valuable global indicator single beamlet optics. Nonetheless velocity distribution accelerated beamlets often deviates from ideal Gaussian profiles. Therefore an accurate characterization optics is essential, particularly negative within context developing ITER NBIs, which pose...
The ITER Neutral Beam Test Facility (NBTF), called PRIMA (Padova Research on Megavolt Accelerator), is hosted in Padova, Italy and includes two experiments: MITICA, the full-scale prototype of heating neutral beam injector, SPIDER, full-size radio frequency negative-ions source. NBTF realization exploitation SPIDER MITICA have been recognized as necessary to make future operation injectors efficient reliable, fundamental achievement thermonuclear-relevant plasma parameters ITER. This paper...
Abstract The ITER Neutral Beam Test Facility (PRIMA) is presently under construction at Consorzio RFX (Padova, Italy). PRIMA includes two experimental devices: an ITER-size ion source with low voltage extraction, called SPIDER, and the full prototype of whole Heating Beams (HNBs), MITICA. purpose MITICA to demonstrate that all operational parameters HNB accelerator can be experimentally achieved, thus establishing a large step forward in performances neutral beam injectors comparison present...
Abstract The negative-ion based neutral beam injector for heating and current drive of the ITER plasma (ITER HNB) is under development, at present focusing on optimization full-scale source in SPIDER test stand. production H − or D ions ion low work function surfaces obtained by caesium evaporation. This paper describes conditioning procedure corresponding performances during first operation with caesium. Technical solutions to overcome limitations stand are described. influence parameters...
Heating neutral beam (HNB) injectors, necessary to achieve burning conditions and control plasma instabilities in ITER, are characterized by such demanding parameters that a test facility (NBTF) dedicated their development optimization is being realized Padua (Italy) with direct contributions from the Italian government (through Consorzio RFX as host entity) ITER international organization (with kind domestic agencies of Europe, Japan India) technical scientific support various European...
The requirements of ITER neutral beam injectors (1 MeV, 40 A negative deuterium ion current for 1 h) have never been simultaneously attained; therefore, a dedicated Neutral Beam Test Facility (NBTF) was set up at Consorzio RFX (Padova, Italy). NBTF includes two experiments: SPIDER (Source the Production Ions Deuterium Extracted from Rf plasma), full-scale prototype source injectors, with 100 keV accelerator, to investigate and optimize properties source; MITICA, entire injector, devoted...
Abstract The physics design of the accelerator for heating neutral beamline on ITER is now finished and this paper describes considerations choices which constitute basis design. Equal acceleration gaps 88 mm have been chosen to improve voltage holding capability while keeping beam divergence low. Kerbs (metallic plates around groups apertures, attached downstream surface grids) are used compensate beamlet–beamlet interaction point beamlets in right direction. A novel magnetic configuration...
The objectives of the nuclear fusion power plant DEMO, to be built after ITER experimental reactor, are usually understood lie somewhere between those and a 'first kind' commercial plant. Hence, in DEMO issues related efficiency RAMI (reliability, availability, maintainability inspectability) among most important drivers for design, as cost electricity produced by this will strongly depend on these aspects. In framework EUROfusion Work Package Heating Current Drive within Power Plant Physics...
SPIDER is one of the two projects ITER Neutral Beam Test Facility (NBTF) under construction in Padova, Italy, at Consorzio RFX premises; it will have a 100 keV beam source with full-size prototype radiofrequency (RF) ion for Injector (NBI), designed to operate pulse length up 3600 s, featuring ITER-like filter field configuration, caesium oven layout and wide set diagnostics.These features allow reproducing operation like as cannot be done any other existing test facility.SPIDER realization...
Giant negative ion sources for neutral beam injectors deliver huge currents, thanks to their multi-beamlet configuration. As the single-beamlet optics defines transmission losses along beamline, extraction of a similar current all beamlets is extremely desirable, in order facilitate source operation (i.e., around perveance match). This Review investigates correlation between vertical profile intensity and profiles plasma properties at region source, focusing on influence increasing cesium...
An overview of the recent operations and main results cesium injection in Source for Production Ions Deuterium Extracted from Rf plasma (SPIDER) negative ion source are described this contribution. In experiments without injection, all SPIDER plants were tested to verify basic expectations on operational parameters (e.g., electron cooling effectiveness magnetic filter field) determine its region. For beam properties, it was shown that current density varies across vertical direction....
The optimization of passenger car efficiency is an important contribution to GHG emissions mitigation. This global warming concern pushing technological solutions reduce vehicle fuel consumption and consequently CO2 emissions. In this work, the impacts engine lubricants with lower viscosity friction modifier additive in a light-vehicle spark ignition were numerically simulated experimentally validated. substitution baseline 5W40 lubricant by 5W20 proposal resulted 2.9% combined cycle....
Two Neutral Beam Injectors (NBI) are foreseen to provide a substantial fraction of the heating power necessary ignite thermonuclear fusion reactions in ITER. The development NBI system at unprecedented parameters (40 A negative ion current accelerated up 1 MV) requires realization full scale prototype, be tested and optimized Test Facility under construction Padova (Italy). beam source is key component design multi-grid accelerator goal multi-national collaborative effort. In particular,...
Neutral beam injection is one of the most important methods plasma heating in thermonuclear fusion experiments, allowing attainment conditions as well driving current. beams are generally produced by electrostatically accelerating ions, which neutralised before into magnetised plasma. At particle energy required for advanced devices and particularly ITER, neutralisation positive ions very inefficient so that negative used. The present paper devoted to description phenomena occurring when a...
Recent research results on negative-ion-rich plasmas in a large negative ion source have been reviewed. Spatial density and flow distributions of hydrogen ions (H−) positive together with those electrons are investigated 4-pin probe photodetachment (PD) signal Langmuir probe. The PD is converted to local H− from calibration scanning cavity ring down measurement. Introduction Cs changes the slope plasma potential distribution depending upon grid bias. A higher electron H2 locally shields bias...
Magnetic field plays an essential role in negative ion-driven neutral beam injectors (NBIs), being necessary to counteract the inevitable interaction between electrons and ions, both maximize ion production minimize electron extraction acceleration. influences also generation confinement of plasma from where ions are extracted, this is particularly significant for radio frequency (RF) inductively generated plasmas, such as case SPIDER. SPIDER full-scale prototype ITER NBI source, operation...