Application of HDF5 in long-pulse quasi-steady state data acquisition at high sampling rate |
| |
| Affiliation: | 1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China;2. School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230031, China;3. Department of Computer Science, Anhui Medical University, Hefei, Anhui 230030, China;1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;2. College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;1. Pontificia Universidad Católica de Valparaíso, Av. Brasil 2147, Valparaíso, Chile;2. Departamento de Informática y Automática, UNED, 28040 Madrid, Spain;3. Asociación EURATOM/CIEMAT para Fusión, Avd. Complutense 22, 28040 Madrid, Spain;4. Departamento de Arquitectura de Computadores y Automática, Universidad Complutense de Madrid, 28040 Madrid, Spain;1. Institute of Plasma Physics AS CR, Za Slovankou 3, 182 00 Praha 8, Czech Republic;2. Department of Physical Electronics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, V Holešovičkách 2, 180 00 Praha 8, Czech Republic;3. Culham Centre for Fusion Energy, Culham Science Centre, Abingdon, United Kingdom;4. Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University in Prague, V Holešovičkách 2, 180 00 Praha 8, Czech Republic;5. Faculty of Electrical Engineering, Czech Technical University in Prague, Karlovo náměstí 13/E, Prague, Czech Republic |
| |
| Abstract: | A new high sampling rate quasi-steady state data-acquisition system has been designed for the microwave reflectometry diagnostic of EAST experiments. In order to meet the requirements of long-pulse discharge and high sampling rate, it is designed based on PXI Express technology. A high-performance digitizer National Instruments PXIe-5122 with two synchronous analog input channels in which the maximum sampling rate is 100 MHz has been adopted. Two PXIe-5122 boards at 60 MSPS and one PXIe-6368 board at 2 MSPS are used in the system and the total throughput is about 500 MB/s. To guarantee the large amounts of data being saved continuously in the long-pulse discharge, an external hard-disk data stream enclosure NI HDD-8265 in which the capacity of sustained speed of reading and writing is 700 MB/s. And in RAID-5 mode its storage capacity is 80% of the total.The obtained raw data firstly stream continuously into NI HDD-8265 during the discharge. Then it will be transferred to the data server automatically and converted into HDF5 file format. HDF5 is an open source file format for data storage and management which has been widely used in various fields, and suitable for long term case. The details of the system are described in the paper. |
| |
| Keywords: | EAST Long-pulse High sampling rate PXI Express HDF5 |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
