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    Wyświetlanie 1-6 z 6
    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:
    Modelling of the soft X-ray tungsten spectra expected to be registered by GEM detection system for WEST
    Autorzy:
    Syrocki, Ł.
    Szymańska, E.
    Słabkowska, K.
    Polasik, M.
    Pestka, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/971490.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    X-ray spectra
    tokamak
    tungsten L, M, N, X-ray lines
    GEM detection system
    Opis:
    In the future International Thermonuclear Experimental Reactor (ITER), the interaction between the plasma and the tungsten chosen as the plasma-facing wall material imposes that the hot central plasma loses energy by X-ray emission from tungsten ions. On the other hand, the registered X-ray spectra provide alternative diagnostics of the plasma itself. Highly ionized tungsten emits extremely complex X-ray spectra that can be understood only after exhaustive theoretical studies. The detailed analyses will be useful for proper interpretation of soft X-ray plasma radiation expected to be registered on ITER-like machines, that is, Tungsten (W) Environment in Steady-state Tokamak (WEST). The simulations of the soft X-ray spectra structures for tungsten ions have been performed using the flexible atomic code (FAC) package within the framework of collisional-radiative (CR) model approach for electron temperatures and densities relevant to WEST tokamak.
    Źródło:
    Nukleonika; 2016, 61, 4; 433-436
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement Capabilities Upgrade of GEM Soft X-ray Measurement System for Hot Plasma Diagnostics
    Autorzy:
    Linczuk, Pawel
    Wojenski, Andrzej
    Kolasinski, Piotr
    Krawczyk, Rafal
    Zabolotny, Wojciech
    Pozniak, Krzysztof
    Chernyshova, Maryna
    Czarski, Tomasz
    Gaska, Michal
    Kasprowicz, Grzegorz
    Malinowski, Karol
    Powiązania:
    https://bibliotekanauki.pl/articles/1844588.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    measurement system
    GEM
    DAQ
    Opis:
    The paper presents improvements of the developed system for hot plasma radiation measurement in the soft Xray range based on a Gas Electron Multiplier (GEM) detector. Scope of work consists of a new solution for handling hardware time-synchronization with tokamak systems needed for better synchronization with other diagnostics and measurement quality. The paper describes the support of new modes of triggering on PC-side. There are communication and data path overview in the system. The new API is described, which provide separate channels for data and control and is more robust than the earlier solution. Work concentrates on stability and usability improvements of the implemented device providing better usage for end-user.
    Źródło:
    International Journal of Electronics and Telecommunications; 2021, 67, 1; 115-120
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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:
    Soft X-ray Diagnostic System Upgrades and Data Quality Monitoring Features for Tokamak Usage
    Autorzy:
    Wojenski, Andrzej
    Linczuk, Paweł
    Piotr, Kolasinski
    Chernyshova, Maryna
    Mazon, Didier
    Kasprowicz, Grzegorz
    Pozniak, Krzysztof T.
    Gaska, Michał
    Czarski, Tomasz
    Krawczyk, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/1844595.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    data quality monitoring
    FPGA
    Verilog/VHDL
    HDL
    GEM detector
    SXR plasma diagnostics
    modular measurement system
    data evaluation
    tokamak
    Opis:
    The validation of the measurements quality after on-site diagnostic system installation is necessary in order to provide reliable data and output results. This topic is often neglected or not discussed in detail regarding measurement systems. In the paper recently installed system for soft X-ray measurements is described in introduction. The system is based on multichannel GEM detector and the data is collected and sent in special format to PC unit for further postprocessing. The unique feature of the system is the ability to compute final data based on raw data only. The raw data is selected upon algorithms by FPGA units. The FPGAs are connected to the analog frontend of the system and able to register all of the signals and collect the useful data. The interface used for data streaming is PCIe Gen2 x4 for each FPGA, therefore high throughput of the system is ensured. The paper then discusses the properties of the installation environment of the system and basic functionality mode. New features are described, both in theoretical and practical approach. New modes correspond to the data quality monitoring features implemented for the system, that provide extra information to the postprocessing stage and final algorithms. In the article is described also additional mode to perform hardware simulation of signals in a tokamak-like environment using FPGAs. The summary describes the implemented features of the data quality monitoring features and additional modes of the system.
    Źródło:
    International Journal of Electronics and Telecommunications; 2021, 67, 1; 109-114
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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