Multi-energy SXR cameras for magnetically confined fusion plasmas (invited)

A compact multi-energysoft x-raycamera has been developed for time, energy and space-resolvedmeasurements of the soft-x-rayemissivity in magnetically confined fusion plasmas. Multi-energysoft x-rayimaging provides a unique opportunity formeasuring, simultaneously, a variety of important plasma properties (Te,nZ, ΔZeff, andne,fast). The electrontemperature can be obtained by modeling the slope of the continuum radiation from ratios of the available brightness and inverted radialemissivity profiles over multiple energy ranges. Impurity densitymeasurements are also possible using the line-emission from medium- to high-Z impurities to separate the background as well as transient levels of metal contributions. This technique should be explored also as a burningplasma diagnostic in-view of its simplicity and robustness.

Source: Review of Scientific Instruments - November 14, 2016 Category: Physics Authors: L. F. Delgado-Aparicio, J. Maddox, N. Pablant, K. Hill, M. Bitter, J. E. Rice, R. Granetz, A. Hubbard, J. Irby, M. Greenwald, E. Marmar, K. Tritz, D. Stutman, B. Stratton and P. Efthimion Source Type: research