Development of a High Resolution X-Ray Imaging Crystal Spectrometer for Measurement of Ion-Temperature and Rotation-Velocity Profiles in Fusion Energy Research Plasmas

[摘要] A new imaging high resolution x-ray crystal spectrometer (XCS) has been developed to measure continuous profiles of ion temperature and rotation velocity in fusion plasmas. Following proof-of-principle tests on the Alcator C-Mod tokamak and the NSTX spherical tokamak, and successful testing of a new silicon, pixilated detector with 1MHz count rate capability per pixel, an imaging XCS is being designed to measure full profiles of Ti and vφ on C-Mod. The imaging XCS design has also been adopted for ITER. Ion-temperature uncertainty and minimum measurable rotation velocity are calculated for the C-Mod spectrometer. The affects of x-ray and nuclear-radiation background on the measurement uncertainties are calculated to predict performance on ITER.

[发布日期] 2008-02-27

[学科分类] 原子、分子光学和等离子物理

[关键词] DESIGN;ION TEMPERATURE;PERFORMANCE;RESOLUTION;ROTATION;SILICON;SPECTROMETERS;TESTING;THERMONUCLEAR REACTORS;VELOCITY ion-temperature;rotation velocity;diagnostic;x-ray;crystal spectrometer;detector;C-Mod;ITER