A5065530238- Magnetic confinement fusion research
- Nuclear Physics and Applications
- Laser-Plasma Interactions and Diagnostics
- Nuclear reactor physics and engineering
- Fusion materials and technologies
- Radiation Detection and Scintillator Technologies
- Advanced Memory and Neural Computing
- Cold Fusion and Nuclear Reactions
- Advanced biosensing and bioanalysis techniques
- Catalysis and Oxidation Reactions
- Ionosphere and magnetosphere dynamics
- MXene and MAX Phase Materials
- Electrocatalysts for Energy Conversion
- Particle Detector Development and Performance
- Catalytic Processes in Materials Science
University of Milano-Bicocca
2011-2024
Institut de Recherche sur la Fusion par Confinement Magnétique
2024
CEA Cadarache
2024
At present, magnetic confinement fusion devices rely solely on absolute neutron counting as a direct way of measuring power. Absolute deuterium-tritium gamma rays could provide the secondary neutron-independent technique required for validation scientific results and licensing tool future power plants. However, this approach necessitates an accurate determination gamma-ray-to-neutron branching ratio. The ratio reaction ^{3}H(^{2}H,γ)^{5}He/^{3}H(^{2}H,n)^{4}He was determined in plasmas at...
Neutron measurement is the primary tool in SPARC tokamak for fusion power (Pfus) monitoring, research on physics of burning plasmas, validation neutronics simulation workflows, and providing feedback machine protection. A demanding target uncertainty (10% Pfus) coverage a wide dynamic range (>8 orders magnitude going up to 5 × 1019 n/s), coupled with fast-track timeline design deployment, make development neutron diagnostics challenging. Four subsystems are under that exploit high...
The nature of Ag(111)/TiO${}_{2}$ rutile and anatase interfaces, interest for the design memristors, has been studied by means density functional theory calculations using various computational approaches. We have considered interfaces where lattice mismatch oxide crystalline phase metal electrode does not result in excessive strain. bonding at interface is very weak, charge transfer negligible stoichiometric oxides. formation O vacancies a lower cost with Ag than on bare titiania surface...
A new 14 MeV neutron spectrometer utilizing the magnetic proton recoil (MPR) technique is under development for SPARC tokamak. This instrument measures neutrons by converting them into protons, whose momenta are subsequently analyzed using a series of magnets before detection an array scintillators known as hodoscope. In this work, we explore various solutions hodoscope detectors through laboratory tests with radioactive sources and simulations. We present findings on light collection pulse...
A magnetic proton recoil (MPR) neutron spectrometer is being designed for SPARC, a high field (BT = 12 T), compact (R0 1.85 m, 0.57 m) tokamak currently under construction in Devens, MA, USA. MPR spectrometers are versatile tools making fidelity ab initio calibrated measurements of fusion flux spectra and have been used to infer power, ion temperature, fuel ratio, suprathermal populations at several performance experiments. The an large part determined by the design field, which disperses...
The SPARC tokamak is a high-field, Bt0 ∼12 T, medium-sized, R0 = 1.85 m, that presently under construction in Devens, MA, led by Commonwealth Fusion Systems. It will be used to de-risk the high-field path fusion power plant and demonstrate commercial viability of energy. SPARC’s first campaign plan achieve Qfus > 1 using an ICRF-heated, <10 MW, high current, Ip ∼ 8.5 L-mode fueled D–T gas injection, its second investigate H-mode operations D–D. To facilitate plasma control...
(WO3)3 clusters deposited on the (110) rutile TiO2 surface are excellent catalysts for formaldehyde (CH2O) polymerization reaction (J. Phys. Chem. C2010, 114, 17017). The present B3LYP study unravels possible paths of this catalyzed reaction. According to stoichiometry r-TiO2 surface, can be neutral, singly charged, or doubly charged. We find that only neutral and anionic (WO3)3– reactive toward CH2O molecules. In both cases it is determine more than one mechanism basis a nucleophilic attack...
Several small to medium-scale magnetic confinement fusion devices operate using deuterium as fuel. These low neutron rate (108–1010 n/s) rely on 2.45 MeV measurements validate physical models and assess their performance. Given the modest rate, monitors have be placed close possible machine maximize data gathering. In these regions, intense stray fields could affect detector’s this work, development of a detector based an EJ-276D scintillator crystal coupled with SiPM custom-made readout...
A COmpact Spectrometer for Measurements Of Neutrons at the ASDEX Upgrade Tokamak (COSMONAUT) has been developed spectroscopy measurements of 2.45 MeV neutron emission from deuterium plasmas Upgrade. The instrument is based on a CLYC-7 inorganic scintillator, whereby detection fusion neutrons occurs via their interaction with 35Cl nuclei in detector crystal, leading to peak response function and providing excellent neutron/gamma-ray discrimination capabilities. diagnostics installed along...