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

被引：0

作者：

Trieu, S. ^{[1
]}

Hoffmann, F. ^{[1
]}

de Haas, M. ^{[1
]}

Tchilinguirian, G. ^{[1
,2
]}

Leblanc, B. P. ^{[1
]}

机构：

[1] Princeton Plasma Phys Lab, Princeton, NJ 08540 USA

[2] Peraton Labs, Instrumentat & Control Grp, Woodbridge, NJ 07095 USA

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2024年 / 52卷 / 06期

关键词：

Real-time systems; Field programmable gate arrays; Ethernet; Plasmas; Electrons; Temperature measurement; Plasma temperature; Front panel data port (FPDP); National Spherical Torus Experiment Upgrade (NSTX-U); Thomson scattering (TS); user datagram protocol (UDP);

D O I：

10.1109/TPS.2024.3421897

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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.

引用

页码：2213 / 2217

页数：5