Latency and throughput of online processing in Soft X-Ray GEM-based measurement system
Paweł Linczuk , Rafał Krawczyk , Andrzej Wojeński , Wojciech Zabołotny , M. Chernyshova , Krzysztof Poźniak , Tomasz Czarski , Michał Gąska , Grzegorz Henryk Kasprowicz , Piotr Kolasiński , E. Kowalska-Strzęciwilk , K. Malinowski
AbstractThe paper presents latency and performance study of the monitoring system for plasma impurities radiation in a tokamak. The developed solution measures radiation in Soft X-Ray range and can provide valuable information about the ongoing experiment with low latency. This work presents the test configuration with a single-dimensional pixel topology, with 64 channels, tested at photon rate about 100 kHz per channel. The hardware consists of the GEM-based detector, FPGAs, PCIe transmission system and the computer system with 64-bit x86 architecture. The software is the C/C++ code optimized for the execution time and working in the global trigger mode. The system uses raw data acquisition and the backend computations in CPU to provide high accuracy and high-quality results, not easily achievable otherwise. The research includes measurements of the throughput of the system and the latency of the whole data path - between the pulse detection in FPGA and storing of spectroscopy histograms in the file system in memory. The direction of improvements and further development were proposed.
|Journal series||Journal of Instrumentation, ISSN , e-ISSN 1748-0221, (0 pkt)|
|Pages||1 - 6|
|Publication size in sheets||0.3|
|Keywords in English||Control and monitor systems online; Data acquisition circuits; Data processing methods|
|Project||Wdrożenie działań opisanych w Mapie Drogowej dla Fuzji w trakcie Horyzontu 2020 poprzez Wspolny Program członkow konsorcjum EUROfusion. . Project leader: Ciupiński Łukasz, application date 05-05-2016, start date 06-05-2016, planned end date 31-12-2018, WIM/2016/8, Application
|Score||= 5.0, 13-01-2020, ArticleFromJournal|
|Publication indicators||= 3; = 0|
|Citation count*||2 (2020-01-20)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.