A5080093142- Magnetic confinement fusion research
- Fusion materials and technologies
- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- Ionosphere and magnetosphere dynamics
- Plasma Diagnostics and Applications
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- Advanced Thermodynamics and Statistical Mechanics
- Earthquake Detection and Analysis
- Youth Culture and Social Dynamics
- Geomagnetism and Paleomagnetism Studies
- Nuclear Materials and Properties
- Nuclear Physics and Applications
- Complex Systems and Time Series Analysis
- Diffusion and Search Dynamics
- Atomic and Molecular Physics
- Particle accelerators and beam dynamics
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Solar and Space Plasma Dynamics
- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- Latin American Literature Studies
- Advanced Mathematical Theories and Applications
Kurchatov Institute
2015-2024
Moscow Engineering Physics Institute
2015-2024
Moscow Institute of Physics and Technology
2018-2024
Moscow Power Engineering Institute
2021-2024
Moscow Aviation Institute
2021-2023
Plasma (Russia)
2018
Troitsk Institute for Innovation and Fusion Research
2013
ITER
2011
Isotopen Technologien München (Germany)
1998
Abstract The Monte-Carlo code ERO2.0 was used to simulate steady-state erosion and transport of beryllium (Be) in the ITER main chamber. Various plasma scenarios were tested, including a variation species (hydrogen, deuterium, helium), conditions (density, temperature, flow velocity) magnetic configurations. study provides valuable predictions for Be divertor, where it is expected be an important contributor dust formation fuel retention due build-up co-deposited layers. gross net rates...
The data of the Hα high-resolution spectroscopy, collected on multiple lines sight, which cover entire divertor space in poloidal cross-section, during recent hydrogen-deuterium experiments JET-ILW (ITER-like wall), are processed. A strong spatial inhomogeneity hydrogen concentration, H/(H + D), is found many pulses. Namely, D) ratio may be lower inner than that outer by values 0.15–0.35, depending conditions gas puffing and plasma heating. This effect suggests necessity spatially-resolved...
Abstract A sequence of fuel recovery methods was tested in JET, equipped with the ITER-like beryllium main chamber wall and tungsten divertor, to reduce plasma deuterium concentration less than 1% preparation for operation tritium. This also a key activity regard refining clean-up strategy be implemented at end 2nd DT campaign JET (DTE2) assess tools that are envisaged mitigate tritium inventory build-up ITER. The began 4 days baking 320 °C, followed by further which Ion Cyclotron Wall...
Abstract ERO2.0 is a recently developed Monte‐Carlo code for modelling global erosion and redeposition in fusion devices. We report here on the code's application to ITER studying of beryllium (Be) first wall armour under burning plasma steady state diverted conditions. An important goal study provide synthetic signals design two key diagnostics: main chamber visible spectroscopy laser in‐vessel viewing systems. The simulations are performed using toroidally symmetric backgrounds obtained by...
Abstract Tritium retention inside the vacuum vessel is a potentially serious constraint in operation of large-scale fusion machines like ITER. An situ diagnostics for first wall H/D/T by laser induced desorption spectroscopy (LIDS) proposed use between plasma discharges. The technique based on local baking irradiation and subsequent analysis in-vessel gas optical emission radiation. heating implementation, kinetics thermal extraction accuracy measurements are analysed. To resolve lines...
Abstract A tomographic method for reconstructing the axially symmetric D α emission profile in ITER scrape-off layer and divertor from intensity measurements fields of view (FoV) Vis/IR TV Divertor Impurity Monitor diagnostics is under development. The takes into account strong background signal due to stray light produced by reflections metal wall vacuum chamber. allows filter out signals measured main accuracy this tested within framework a synthetic diagnostic, which uses Raysect Cherab...
Abstract A new method for estimating the global erosion of beryllium (Be) in ITER is proposed. The uses raytracing-aided tomography to reconstruct three-dimensional (3D) profile visible-light emissivity boundary plasma from images captured with filtered cameras VIS/IR wide angle viewing system, H-alpha (and Visible) Spectroscopy diagnostics and signals collected Divertor Impurity Monitor. light reflected into detectors metallic plasma-facing components (PFCs) out process. reconstructed Be...
A wide class of non-stationary superdiffusive transport on a uniform background with power-law decay, at large distances, the step-length probability distribution function (PDF) is shown to possess an automodel solution. The solution for Green constructed using scaling laws propagation front (relevant-to-superdiffusion average displacement) and asymptotic solutions far beyond in advance front. These are determined essentially by long-free-path carriers (L\'evy flights). validity suggested...
The present study addresses the uncertainties that affect recently performed predictions of beryllium (Be) erosion and migration in ITER using Monte-Carlo code ERO2.0. focus is a D–T baseline discharge with fusion power gain Q=10, scrape-off layer (SOL) input PSOL=100MW, toroidal plasma current Ip=15MA, central field Bt=5.3T. parameter studies used to investigate include variations radial extrapolation parameters far-SOL (scan A), assumptions on impact angle distributions B) anomalous...
The results of a high-resolution processing, based on techniques fractal dimension analysis, experimental data from earlier experiments the linear Z-pinches are presented, which prove electric current-carrying plasmas to be random medium. basic building block this medium is identified an almost-closed helical filamentary magnetoplasma configuration (we call it heteromac ). heteromacs coupled together through long-range self-sustained filamentation and, thus, form dynamical percolating...
A newly developed method of high-resolution processing, called a multilevel dynamical contrasting, is applied to analyze numerous data from laboratory electric discharges and observations cosmic plasmas in broad spectroscopic range rf soft x-ray images. high degree self-similarity plasma structuring found very length scales, individual filaments the structures universe, which resemble currents networking plasmas. The results presented illustrate recently suggested [Kukushkin...
The accuracy of approximate automodel solutions for the Green’s function Biberman-Holstein equation Stark broadening spectral lines is analyzed using distributed computing. high in a wide range parameters problem shown.
A model is developed to quantitatively interpret the electron cyclotron (EC) spectra in tokamak T-10 at frequencies lower than first EC harmonic plasma edge. The based on almost free propagation and isotropy of radiation between vacuum chamber wall cut-off zone plasma. inverse problem for reconstruction velocity distribution function superthermal electrons (in parallel perpendicular momenta, magnetic flux surfaces edge) formulated solved. It shown that Ohmic discharges are trapped particles...
The method of approximate automodel solution for the Green's function time-dependent superdiffusive (nonlocal) transport equations (J.Phys.A: Math.Theor.49 (2016) 255002) is extended to case a finite velocity carriers.This corresponds extension from Lévy flights-based type, which belongs class "Lévy walk + rests", allow retardation effects in flights.This problem covers cases by resonant photons astrophysical gases and plasmas, heat electromagnetic waves migration predators, other...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation K. Yu. Vukolov, I. Orlovskiy, A. G. Alekseev, Borisov, E. N. Andreenko, B. Kukushkin, V. S. Lisitsa, Neverov; Main challenges for ITER optical diagnostics. AIP Conf. Proc. 21 August 2014; 1612 (1): 164–170. https://doi.org/10.1063/1.4894046 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends...
One of the most important properties stochastic nonlinear processes, including turbulence hydrodynamic motion continuous media, is distant spatial correlations. To describe them, an approach was proposed by Shlesinger and colleagues based on a linear integro-differential equation with slowly decaying kernel, which corresponds to superdiffusion (nonlocal) transfer in regime Lévy walks (Lévy flights when finite velocity carriers taken into account). In this paper, we formulate similar that...
Abstract A statistical analysis is carried out of the similarity profiles plasma parameters: electron temperature T e , density n and pressure P at stage quasi-stationary current (the so called flat-top stage) about 9000 discharges in JET tokamak, among from #84458 to #99419 that covers almost entire database successful ITER-like wall machine. For all these parameters, existence universal shown as functions normalized minor radius column ρ . The discharge (DUPs) are obtained by dividing...