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Wyszukujesz frazę "Chernyshova, M." wg kryterium: Autor

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    Wyświetlanie 1-9 z 9
    Tytuł:
    Multiboard trigger link synchronization and diagnostics
    Autorzy:
    Wojenski, A.
    Pozniak, K.
    Mazon, D.
    Chernyshova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/114174.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    data quality monitoring
    FPGA
    GEM detector
    soft X-ray plasma diagnostics
    trigger distribution
    measurement system
    Opis:
    Soft X-ray (SXR) plasma measurements are important type of diagnostics especially in tokamak facilities. Main output products are energy and topology spectra distributed in time. In case of Gas Electron Multiplier (GEM) detectors, used as radiation sensors, large number of analog readout channels must be provided. For this purpose Field-Programmable Gate Arrays (FPGAs) are used. Data quality monitoring (DQM) is important topic in case of asynchronous events registered by the measurement unit. Due to numerous FPGAs used it is necessary to provide advanced trigger synchronization between them. In the paper is proposed an algorithmic approach for the trigger link training and diagnostics. It is a key component in order to provide consistent measurement data for DQM analysis. The contents of the article covers the plasma experiments and related DQM topics. In following chapters explanation of the synchronization problem is described. The proposed algorithm will be used for trigger link synchronization and diagnostics aspects. The simulations are also discussed. Currently, the proposed ideas are at the stage of implementation and tests on real hardware. Simulation were successfully performed. Summary of the work carried out is presented at the end of the paper.
    Źródło:
    Measurement Automation Monitoring; 2017, 63, 6; 223-225
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Advanced Real-time Evaluation and Data Quality Monitoring Model Integration with FPGAs for Tokamak High-performance Soft X-ray Diagnostic System
    Autorzy:
    Wojenski, A.
    Poźniak, K.
    Mazon, D.
    Chernyshova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/227260.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    data quality monitoring
    system modeling
    FPGA
    Verilog/VHDL
    HDL
    GEM detector
    SXR plasma diagnostics
    modular measurement system
    data evaluation
    Opis:
    Based on the publications regarding new or recent measurement systems for the tokamak plasma experiments, it can be found that the monitoring and quality validation of input signals for the computation stage is done in different, often simple, ways. In the paper is described the unique approach to implement the novel evaluation and data quality monitoring (EDQM) model for use in various measurement systems. The adaptation of the model is made for the GEM-based soft X-ray measurement system FPGA-based. The EDQM elements has been connected to the base firmware using PCI-E DMA real-time data streaming with minimal modification. As additional storage, on-board DDR3 memory has been used. Description of implemented elements is provided, along with designed data processing tools and advanced simulation environment based on Questa software.
    Źródło:
    International Journal of Electronics and Telecommunications; 2018, 64, 4; 473-479
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kerr Effect Investigations of Magnetic Interlayer Interactions in EuS-PbS Multilayers
    Autorzy:
    Kowalczyk, L.
    Chernyshova, M.
    Story, T.
    Ha, J. K.
    Voloubev, V. V.
    Sipatov, A. Yu.
    Powiązania:
    https://bibliotekanauki.pl/articles/2028788.pdf
    Data publikacji:
    2001-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.20.Ck
    75.30.Et
    Opis:
    Kerr magnetometry was employed to study the temperature dependence of magnetization and magnetic hysteresis loops in ferromagnetic EuS-PbS semiconductor multilayers in the temperature range T=3-35 K at low magnetic fields H≤150 Oe. For EuS-PbS/KCl(100) structures with ultrathin non-magnetic PbS spacer of 1~nm, we observed a maximum on the temperature dependence of magnetization at low fields H≤30 Oe. For higher fields, we found for these structures a regular mean-field-like increase in magnetization with decreasing temperature. The same regular behavior was also found for EuS-PbS/KCl structures with thicker PbS spacer, as well as for all EuS-PbS/BaF$\text{}_{2}$(111) multilayers independently of spacer thickness. For qualitative interpretation of these findings, we consider two magnetic contributions to the total energy of EuS-PbS multilayers: the Zeeman energy and the antiferromagnetic interlayer exchange coupling between ferromagnetic EuS layers via diamagnetic PbS spacer.
    Źródło:
    Acta Physica Polonica A; 2001, 100, 3; 357-363
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heat load and deuterium plasma effects on SPS and WSP tungsten
    Autorzy:
    Vilémová, M.
    Matějíček, J.
    Nevrlá, B.
    Chernyshova, M.
    Gasior, P.
    Kowalska-Strzeciwilk, E.
    Jäger, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/146910.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    tungsten
    fusion
    heat loading
    irradiation
    bubbles
    surface damage
    Opis:
    Tungsten is a prime choice for armor material in future nuclear fusion devices. For the realization of fusion, it is necessary to address issues related to the plasma–armor interactions. In this work, several types of tungsten material were studied, i.e. tungsten prepared by spark plasma sintering (SPS) and by water stabilized plasma spraying (WSP) technique. An intended surface porosity was created in the samples to model hydrogen/ helium bubbles. The samples were subjected to a laser heat loading and a radiation loading of deuterium plasma to simulate edge plasma conditions of a nuclear fusion device (power density of 108 W/cm2 and 107 W/cm2, respectively, in the pulse intervals up to 200 ns). Thermally induced changes in the morphology and the damage to the studied surfaces are described. Possible consequences for the fusion device operation are pointed out.
    Źródło:
    Nukleonika; 2015, 60, 2; 275-283
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Studies of Non-Magnetic Spacer in Thin Fe/Si Multilayers
    Autorzy:
    Szuszkiewicz, W.
    Jouanne, M.
    Morhange, J.
    Chernyshova, M.
    Kowalczyk, L.
    Łusakowska, E.
    Wandziuk, P.
    Luciński, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044545.pdf
    Data publikacji:
    2005-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.55.-a
    75.70.-i
    78.30.-j
    Opis:
    Structures containing magnetic metallic layers attract a lot of attention because of their possible applications in the area of spintronics. The hybrid structures compatible with the Si crystal lattice parameter are of special interest. In this work the short-period Fe/Si multilayers were grown by the sputtering onto (001)-oriented Si substrate and investigated by various techniques. After the deposition, all multilayers were characterized by atomic force microscopy. The goal of the present paper was to determine the chemical composition of thin layer created at the interface in Fe/Si multilayers due to the Fe diffusion into Si, as well as to analyze the phenomena, which take place in this area. The results of the optical characterization by the Raman scattering were correlated with the magnetic properties of investigated structures (determined by means of the Kerr rotation).
    Źródło:
    Acta Physica Polonica A; 2005, 108, 5; 891-896
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Feasibility of FPGA to HPC computation migration of plasma impurities diagnostic algorithms
    Autorzy:
    Linczuk, P.
    Krawczyk, R. D.
    Zabolotny, W.
    Wojenski, A.
    Kolasinski, P.
    Pozniak, K. T.
    Kasprowicz, G.
    Chernyshova, M.
    Czarski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/226512.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    plasma diagnostic
    GEM system
    feedback loops
    Intel Xeon
    Intel Xeon Phi
    high performance computing HPC
    Opis:
    We present a feasibility study of fast events parameters estimation algorithms regarding their execution time. It is the first stage of procedure used on data gathered from gas electron multiplier (GEM) detector for diagnostic of plasma impurities. Measured execution times are estimates of achievable times for future and more complex algorithms. The work covers usage of Intel Xeon and Intel Xeon Phi - high-performance computing (HPC) devices as a possible replacement for FPGA with highlighted advantages and disadvantages. Results show that less than 10 ms feedback loop can be obtained with the usage of 25% hardware resources in Intel Xeon or 10% resources in Intel Xeon Phi which leaves space for future increase of algorithms complexity. Moreover, this work contains a simplified overview of basic problems in actual measurement systems for diagnostic of plasma impurities, and emerging trends in developed solutions.
    Źródło:
    International Journal of Electronics and Telecommunications; 2017, 63, 3; 323-328
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Into the fast tomographic postprocessing in tokamaks
    Wprowadzenie do zagadnienia tomografii w algorytmach postprocessingu dla reaktorów typu tokamak
    Autorzy:
    Krawczyk, R.
    Kolasiński, P.
    Linczuk, P.
    Zabołotny, W.
    Poźniak, K.
    Zienkiewicz, P.
    Romaniuk, R.
    Wojeński, A.
    Kasprowicz, G.
    Czarski, T.
    Chernyshova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/408058.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
    Tematy:
    plasma sciences
    fast tomography
    GEM detector
    data processing
    fizyka plazmy
    tomografia szybka
    detektor GEM
    przetwarzanie danych
    Opis:
    The collaboration of authors led to implementing advanced and fast systems for diagnostics of plasma content in tokamaks. During the development of systems it is planned to add new functionalities, in particular, the algorithms of tomographic reconstruction to obtain information on three dimensional distribution of plasma impurities. In the article the idea of tomographic reconstruction is introduced and issues of performance and adequate hardware selection are presented.
    Wieloletnia współpraca autorów przyczyniła się do powstania zaawansowanych, szybkich mechanizmów diagnostyki składu gorącej plazmy tokamakowej. W ramach rozbudowy systemów zamierza wprowadzić się szereg nowych funkcjonalności, w tym algorytmy rekonstrukcji tomograficznej. Pozwoli to na uzyskanie informacji o przestrzennym rozkładzie nieczystości plazmy w reaktorze. Praca przedstawia koncepcję tomografii tego typu oraz przeprowadzona jest dyskusja nad zagadnieniami wydajności i doboru sprzętu.
    Źródło:
    Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2017, 7, 3; 15-18
    2083-0157
    2391-6761
    Pojawia się w:
    Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temperature Dependence of Antiferromagnetic Interlayer Exchange Coupling in EuS-PbS Multilayers
    Autorzy:
    Chernyshova, M.
    Kowalczyk, L.
    Baran, M.
    Szczerbakow, A.
    Story, T.
    Smits, C. J. P.
    Filip, A. T.
    Swagten, H. J. M.
    de Jonge, W. J. M.
    Sipatov, A. Yu.
    Powiązania:
    https://bibliotekanauki.pl/articles/2038129.pdf
    Data publikacji:
    2004-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.20.Ck
    75.30.Et
    Opis:
    Antiferromagnetic interlayer exchange coupling in semiconductor EuS-PbS-EuS ferromagnetic trilayers grown on PbS (001) substrates with ultrathin (0.6-1.2 nm) nonmagnetic PbS spacers is studied by SQUID magnetometry and model calculations. Analysis of the experimentally observed magnetic field and temperature dependence of the magnetization of EuS-PbS structures reveals a rapid decrease in the interlayer coupling energy with increasing temperature indicating a temperature dependence of the microscopic coupling mechanism acting in these all-semiconductor ferromagnetic/nonmagnetic multilayers.
    Źródło:
    Acta Physica Polonica A; 2004, 105, 6; 599-605
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnetic and Structural Properties of EuS-PbS Multilayers Grown on n-PbS (100) Substrates
    Autorzy:
    Chernyshova, M.
    Łusakowska, E.
    Domukhovski, V.
    Grasza, K.
    Szczerbakow, A.
    Wrotek, S.
    Kowalczyk, L.
    Story, T.
    Smits, C. J. P.
    Swagten, H. J. M.
    De Jonge, W. J. M.
    Palosz, W.
    Sipatov, A. Yu.
    Volobuev, V. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2035589.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    75.20.Ck
    75.30.Et
    Opis:
    Magnetic properties of semiconductor EuS(t)-PbS(d)-EuS(t) ferromagnetic trilayers (t=30÷300Å and d=7.5÷70Å) grown on n-type monocrystalline PbS (100) substrate were studied by SQUID magnetometry and ferromagnetic resonance technique yielding, in particular, the dependence of the ferromagnetic Curie temperature on the thickness of the EuS layer. Structural parameters of layers were examined by X-ray powder diffraction analysis. A high structural quality of the substrate and the multilayer was verified by the measurements of the X-ray rocking curve width indicating the values of the order of 100 arcsec and by atomic force microscopy revealing the presence on the cleft PbS surface regions practically flat in the atomic scale over the area of 1×0.1μm$\text{}^{2}$.
    Źródło:
    Acta Physica Polonica A; 2002, 102, 4-5; 609-615
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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