Soft X-ray tomography in support of impurity control in tokamaks

0466026 - ÚFP 2017 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Mlynář, Jan - Mazon, D. - Imríšek, Martin - Löffelmann, Viktor - Malard, P. - Odstrčil, T. - Tomeš, Matěj - Vezinet, V. - Weinzettl, Vladimír
Soft X-ray tomography in support of impurity control in tokamaks.
Journal of Physics: Conference Series. Vol. 768. Bristol: IOP Publishing, Ltd., 2016, č. článku 012001. IOPscience. ISSN 1742-6588. E-ISSN 1742-6596.
[International Workshop & Summer School on Plasma Physics 2014 (IWSSPP’14)/6./. Kiten (BG), 30.06.2014-06.07.2014]
Grant CEP: GA ČR GAP205/10/2055; GA MŠMT LG14002; GA MŠMT(CZ) LM2011021
Institucionální podpora: RVO:61389021
Klíčová slova: soft X-ray * tomography * tokamak
Obor OECD: Fluids and plasma physics (including surface physics)
http://iopscience.iop.org/issue/1742-6596/768/1

This contribution reviews an important example of current developments in diagnostic systems and data analysis tools aimed at improved understanding and control of transport processes in magnetically confined high temperature plasmas. The choice of tungsten
for the plasma facing components of ITER and probably also DEMO means that impurity control in fusion plasmas is now a crucial challenge. Soft X-ray (SXR) diagnostic systems serve as a key sensor for experimental studies of plasma impurity transport with a clear
prospective of its control via actuators based mainly on plasma heating systems. The SXR diagnostic systems typically feature high temporal resolution but limited spatial resolution due to access restrictions. In order to reconstruct the spatial distribution of the SXR radiation from line integrated measurements, appropriate tomographic methods have been developed and validated, while novel numerical methods relevant for real-time control have been proposed. Furthermore, in order to identify the main contributors to the SXR plasma radiation, at least partial control over the spectral sensitivity range of the detectors would be beneficial, which motivates for developments of novel SXR diagnostic methods
Trvalý link: http://hdl.handle.net/11104/0264478