Real-Time Ethernet Interface for NSTX-U’s Thomson Scattering Diagnostic (2023)

IF 1.3 4区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

IEEE Transactions on Plasma Science Pub Date : 2024-08-23 DOI:10.1109/TPS.2024.3421897

S. Trieu;F. Hoffmann;M. de Haas;G. Tchilinguirian;B. P. LeBlanc

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引用次数: 0

Abstract

The multipoint Thomson scattering (MPTS) diagnostic system at the National Spherical Torus Experiment Upgrade (NSTX-U) facility is undergoing an upgrade to operate in real-time and interface with the plasma control system (PCS) for NSTX-U. Previous prototyping efforts have shown that spectral analysis and rapid calculations of electron temperature and density are possible on a real-time Linux machine when using up to a 100-Hz laser pulse repetition rate. A remaining challenge was transferring the real-time data to NSTX-U’s PCS, which utilizes the front panel data port (FPDP) protocol. The original proposed method was to convert the real-time data into analog values, but a new solution was developed to keep the output format digital by using an Ethernet controller with a field-programmable gate array (FPGA). This article focuses on a new input module that has been developed to accept incoming user datagram protocol (UDP) packets sent over Ethernet, convert into FPDP format, and integrate into the existing data stream under NSTX-U’s real-time framework.

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用于 NSTX-U 汤姆逊散射诊断仪的实时以太网接口 (2023)

国家球环实验升级（NSTX-U）设施的多点汤姆逊散射（MPTS）诊断系统正在进行升级，以便实时运行并与 NSTX-U 的等离子体控制系统（PCS）连接。先前的原型开发工作表明，在实时 Linux 机器上使用高达 100 赫兹的激光脉冲重复率时，可以进行光谱分析以及电子温度和密度的快速计算。剩下的挑战是如何将实时数据传输到 NSTX-U 的 PCS，该 PCS 采用前面板数据端口（FPDP）协议。最初提出的方法是将实时数据转换为模拟值，但后来开发了一种新的解决方案，通过使用带有现场可编程门阵列（FPGA）的以太网控制器来保持数字输出格式。本文重点介绍新开发的输入模块，该模块可接受通过以太网发送的用户数据报协议（UDP）数据包，将其转换为 FPDP 格式，并集成到 NSTX-U 实时框架下的现有数据流中。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Plasma Science 物理-物理：流体与等离子体

CiteScore

3.00

自引率

20.00%

发文量

538

审稿时长

3.8 months

期刊介绍： The scope covers all aspects of the theory and application of plasma science. It includes the following areas: magnetohydrodynamics; thermionics and plasma diodes; basic plasma phenomena; gaseous electronics; microwave/plasma interaction; electron, ion, and plasma sources; space plasmas; intense electron and ion beams; laser-plasma interactions; plasma diagnostics; plasma chemistry and processing; solid-state plasmas; plasma heating; plasma for controlled fusion research; high energy density plasmas; industrial/commercial applications of plasma physics; plasma waves and instabilities; and high power microwave and submillimeter wave generation.