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Proceedings Paper

Synchronization between computation and acquisition parts in the GEM detector-based measurement system
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Paper Abstract

The presented system is used for monitoring of the plasma impurities in the tokamak. It is done by measuring radiation in Soft X-Ray range with the use of a GEM-based detector. Acquired data is transferred through the whole system with low latency. Presented system can be divided into many parts - detector, analog electronics, FPGA, PCIe transmission line and computer system with high-performance CPU. This work will concentrate on synchronization between FPGA, which write data to the memory on the CPU side and computational part, which is executed in the computer. In long-running measurements, there is a synchronization problems which can arise. There is a difference in variables based on which the execution time of both parts is dependent. Working on measurements of radiation of plasma impurities requires limits in terms of latency. This paper presents reasons, descriptions and solutions for such problems.

Paper Details

Date Published: 6 November 2019
PDF: 6 pages
Proc. SPIE 11176, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019, 1117646 (6 November 2019); doi: 10.1117/12.2536777
Show Author Affiliations
Pawel Linczuk, Institute of Plasma Physics and Laser Microfusion (Poland)
Warsaw Univ. of Technology (Poland)
Wojciech M. Zabolotny, Warsaw Univ. of Technology (Poland)
Andrzej Wojenski, Warsaw Univ. of Technology (Poland)
Rafal D. Krawczyk, Warsaw Univ. of Technology (Poland)
CERN (Switzerland)
Krzysztof T. Pozniak, Warsaw Univ. of Technology (Poland)
Maryna Chernyshova, Institute of Plasma Physics and Laser Microfusion (Poland)
Tomasz Czarski, Institute of Plasma Physics and Laser Microfusion (Poland)
Michal Gaska, Warsaw Univ. of Technology (Poland)
Grzegorz Kasprowicz, Warsaw Univ. of Technology (Poland)
Ewa Kowalska-Strzeciwilk, Institute of Plasma Physics and Laser Microfusion (Poland)
Karol Malinowski, Institute of Plasma Physics and Laser Microfusion (Poland)


Published in SPIE Proceedings Vol. 11176:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2019
Ryszard S. Romaniuk; Maciej Linczuk, Editor(s)

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