Two synthetic diagnostics are implemented for the high- k scattering system in NSTX (Smith et al 2008 Rev. Sci. Instrum. 79 123501) allowing direct comparisons between the synthetic and experimentally detected frequency and wavenumber spectra of electron-scale turbulence fluctuations. Synthetic diagnostics are formulated in real-space and in wavenumber space, and are deployed in realistic electron-scale simulations carried out with the GYRO code (Candy and Waltz 2003 J. Comput. Phys. 186 545). A highly unstable electron temperature gradient (ETG) mode regime in a modest- β NSTX NBI-heated H-mode discharge is chosen for the analysis. Mapping the measured wavenumbers to field aligned coordinates shows that the high- k system is sensitive to fluctuations that are closer to the spectral peak in the density fluctuation wavenumber spectrum (streamers) than originally predicted. The analyses of synthetic spectra show that the frequen...

中文翻译：

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通过用于高k散射的综合诊断方法对NSTX中电子尺度湍流测量进行定量比较

针对NSTX中的高k散射系统实施了两种综合诊断方法（Smith等人，2008年，科学与技术评论，第79 123501页），从而可以在电子尺度湍流的合成和实验检测频率和波数谱之间进行直接比较。合成诊断方法是在真实空间和波数空间中制定的，并部署在使用GYRO代码进行的现实电子规模模拟中（Candy和Waltz 2003 J. Comput。Phys。186 545）。在中等ββNSTX NBI加热的H型放电中选择高度不稳定的电子温度梯度（ETG）模式方案进行分析。将测得的波数映射到场对齐坐标表明，高k系统对比最初预测的密度波动波数频谱（流光）更接近频谱峰值的波动敏感。合成光谱的分析表明，频率...