A Spatially Resolving X-ray Crystal Spectrometer for Measurement of Ion-temperature and Rotation-velocity Profiles on the AlcatorC-Mod Tokamak

Hill, K. W. ; Bitter, M. L. ; Scott, S. D. ; Ince-Cushman, A. ; Reinke, M. ; Rice, J. E. ; Beiersdorfer, P. ; Gu, M. F. ; Lee, S. G. ; Broennimann, C. H. ; Eikenberry, E. F.

关键词: DATA ANALYSIS;    EMISSIVITY;    ION TEMPERATURE;    PERFORMANCE;    PLASMA;    RESOLUTION;    ROTATION;    SPECTRA;    SPECTROMETERS;    VELOCITY Diagnostics;    RF Heating;    Tokamaks;    X-ray Spectroscopy;   

DOI  :  10.2172/951311
RP-ID  :  PPPL-4394
PID  :  OSTI ID: 951311
Others  :  TRN: US0902701

学科分类：原子、分子光学和等离子物理

美国|英语

来源: SciTech Connect

【 摘 要 】

A new spatially resolving x-ray crystal spectrometer capable of measuring continuous spatial profiles of high resolution spectra (λ/dλ > 6000) of He-like and H-like Ar Kα lines with good spatial (~1 cm) and temporal (~10 ms) resolutions has been installed on the Alcator C-Mod tokamak. Two spherically bent crystals image the spectra onto four two-dimensional Pilatus II pixel detectors. Tomographic inversion enables inference of local line emissivity, ion temperature (Ti), and toroidal plasma rotation velocity (vφ) from the line Doppler widths and shifts. The data analysis techniqu