کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
271451 | 504995 | 2014 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Design of FPGA based high-speed data acquisition and real-time data processing system on J-TEXT tokamak Design of FPGA based high-speed data acquisition and real-time data processing system on J-TEXT tokamak](/preview/png/271451.png)
• It is a data acquisition system for polarimeter–interferometer diagnostic on J-TEXT tokamak based on FPGA and PXIe devices.
• The system provides a powerful data acquisition and real-time data processing performance.
• Users can implement different data processing applications on the FPGA in a short time.
• This system supports EPICS and has been integrated into the J-TEXT CODAC system.
Tokamak experiment requires high-speed data acquisition and processing systems. In traditional data acquisition system, the sampling rate, channel numbers and processing speed are limited by bus throughput and CPU speed. This paper presents a data acquisition and processing system based on FPGA. The data can be processed in real-time before it is passed to the CPU. It provides processing ability for more channels with higher sampling rates than the traditional data acquisition system while ensuring deterministic real-time performance. A working prototype is developed for the newly built polarimeter–interferometer diagnostic system on the Joint Texas Experimental Tokamak (J-TEXT). It provides 16 channels with 120 MHz maximum sampling rate and 16 bit resolution. The onboard FPGA is able to calculate the plasma electron density and Faraday rotation angel. A RAID 5 storage device is adopted providing 700 MB/s read–write speed to buffer the data to the hard disk continuously for better performance.
Journal: Fusion Engineering and Design - Volume 89, Issue 5, May 2014, Pages 698–701