Krawczyk Rafał Dominik, Czarski Tomasz, Linczuk Paweł, Wojeński Andrzej, Kolasiński Piotr, Gąska Michał, Chernyshova Maryna, Mazon Didier, Jardin Axel, Malard Philippe, Poźniak Krzysztof, Kasprowicz Grzegorz, Zabołotny Wojciech, Kowalska-Strzęciwilk Ewa, Malinowski Karol
Institute of Electronics Systems, Warsaw University of Technology, 15/19 Nowowiejska Street, 00-665 Warsaw, Poland.
Institute of Plasma Physics and Laser Microsynthesis, 23 Hery Street, 01-497 Warsaw, Poland.
Rev Sci Instrum. 2018 Jun;89(6):063504. doi: 10.1063/1.5022131.
This article presents a novel software-defined server-based solutions that were introduced in the fast, real-time computation systems for soft X-ray diagnostics for the WEST (Tungsten Environment in Steady-state Tokamak) reactor in Cadarache, France. The objective of the research was to provide a fast processing of data at high throughput and with low latencies for investigating the interplay between the particle transport and magnetohydrodynamic activity. The long-term objective is to implement in the future a fast feedback signal in the reactor control mechanisms to sustain the fusion reaction. The implemented electronic measurement device is anticipated to be deployed in the WEST. A standalone software-defined computation engine was designed to handle data collected at high rates in the server back-end of the system. Signals are obtained from the front-end field-programmable gate array mezzanine cards that acquire and perform a selection from the gas electron multiplier detector. A fast, authorial library for plasma diagnostics was written in C++. It originated from reference offline MATLAB implementations. They were redesigned for runtime analysis during the experiment in the novel online modes of operation. The implementation allowed the benchmarking, evaluation, and optimization of plasma processing algorithms with the possibility to check the consistency with reference computations written in MATLAB. The back-end software and hardware architecture are presented with data evaluation mechanisms. The online modes of operation for the WEST are discussed. The results concerning the performance of the processing and the introduced functionality are presented.
本文介绍了一种基于软件定义服务器的新型解决方案，该方案被引入到位于法国卡达拉舍的WEST（稳态托卡马克钨环境）反应堆软X射线诊断的快速实时计算系统中。该研究的目的是为研究粒子输运与磁流体动力学活动之间的相互作用，提供高吞吐量和低延迟的数据快速处理。长期目标是在未来反应堆控制机制中实现快速反馈信号，以维持聚变反应。预计所实现的电子测量设备将部署在WEST中。设计了一个独立的软件定义计算引擎，用于处理在系统服务器后端高速采集的数据。信号从前端现场可编程门阵列夹层卡获得，这些夹层卡从气体电子倍增探测器采集并进行选择。用C++编写了一个用于等离子体诊断的快速、原创库。它源自参考离线MATLAB实现。它们被重新设计用于在实验期间以新颖的在线操作模式进行运行时分析。该实现允许对等离子体处理算法进行基准测试、评估和优化，并有可能检查与用MATLAB编写的参考计算的一致性。介绍了后端软件和硬件架构以及数据评估机制。讨论了WEST的在线操作模式。给出了有关处理性能和所引入功能的结果。
