【摘 要】
：
HT-7 superconducting tokamak in the Institute of Plasma Physics of the ChineseAcademy of Sciences is an experimental device for fusion research in China. The ma
【机 构】
：
Institute of Plasma Physics
【基金项目】
：
The project of the Meg-science Engineering Project of the Chinese Academy of Sciences
论文部分内容阅读
HT-7 superconducting tokamak in the Institute of Plasma Physics of the ChineseAcademy of Sciences is an experimental device for fusion research in China. The main task of thedata acquisition system of HT-7 is to acquire, store, analyze and index the data. The volume ofthe data is nearly up to hundreds of million bytes. Besides the hardware and software support, agreat capacity of data storage, process and transfer is a more important problem. To deal withthis problem, the key technology is data compression algorithm. In the paper, the data formatin HT-7 is introduced first, then the data compression algorithm, LZO, being a kind of portablelossless data compression algorithm with ANSI C, is analyzed. This compression algorithm, whichfits well with the data acquisition and distribution in the nuclear fusion experiment, offers a prettyfast compression and extremely fast decompression. At last the performance evaluation of LZOapplication in HT-7 is given.
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