Implementation of reflectometry as a standard density profile diagnostic on DIII-D
Implementation of reflectometry as a standard density profile diagnostic on DIII-D
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DOI：
10.1063/1.1319607
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发表时间：
1999-11
影响因子：
1.6
通讯作者：
L. Zeng;E. Doyle;T. Luce;W. Peebles
中科院分区：
文献类型：
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作者：
L. Zeng;E. Doyle;T. Luce;W. Peebles
DIII-D托卡马克装置上的剖面反射计系统已进行了重大升级，以提高时间覆盖率、数据质量和剖面可用性。利用连续频率调制（FMCW）雷达技术的反射计系统的性能得到了如下改进：首先，安装了一个新的基于PC的数据采集系统，提供了更高的数据采样率和更大的存储深度。更高的采样率使得能够使用FMCW微波源的更快频率扫描，从而提高时间分辨率并增加轮廓精度。更大的存储深度可以实现更长的数据记录，因此现在可以在100 Hz的轮廓测量速率下在5 s的放电中获得轮廓，而在10 MHz的连续采样可用于1 s的高时间分辨率物理研究。第二，现已具备初步的自动化镜头间轮廓分析能力。第三，向最终用户提供概况的情况已大大改善。
The profile reflectometer system on the DIII-D tokamak has been significantly upgraded in order to improve time coverage, data quality, and profile availability. The performance of the reflectometer system, which utilizes continuous frequency modulated (FMCW) radar techniques, has been improved as follows: First, a new PC-based data acquisition system has been installed, providing higher data sampling rates and larger memory depth. The higher sampling rate enables use of faster frequency sweeps of the FMCW microwave source, improving time resolution, and increasing profile accuracy. The larger memory depth enables longer data records, so that profiles can now be obtained throughout 5 s discharges at 100 Hz profile measurement rates, while continuous sampling at 10 MHz is available for 1 s for high time resolution physics studies. Second, an initial automated between-shots profile analysis capability is now available. Third, availability of the profiles to end users has been significantly improved.