Tomographic capabilities of the new GEM based SXR diagnostic of WEST

0470369 - ÚFP 2017 RIV GB eng J - Journal Article
Jardin, A. - Mazon, D. - O’Mullane, M. - Mlynář, Jan - Löffelmann, Viktor - Imríšek, Martin - Chernyshova, M. - Czarski, T. - Kasprowicz, G. - Wojenski, A. - Bourdelle, C. - Malard, P.
Tomographic capabilities of the new GEM based SXR diagnostic of WEST.
Journal of Instrumentation. Roč. 11, July (2016), č. článku C07006. ISSN 1748-0221. E-ISSN 1748-0221.
[International Conference Frontiers in Diagnostics fix Technologies (ICFDT4). Frascati (Rome), 30.03.2016-01.04.2016]
Institutional support: RVO:61389021
Keywords : GEM * SXR * tomography * plasma diagnostics
OECD category: 2.11 Other engineering and technologies
Impact factor: 1.220, year: 2016
http://iopscience.iop.org/article/10.1088/1748-0221/11/07/C07006/pdf

The tokamak WEST (Tungsten Environment in Steady-State Tokamak) will start operating by the end of 2016 as a test bed for the ITER divertor components in long pulse operation. In this context, radiative cooling of heavy impurities like tungsten (W) in the Soft X-ray (SXR) range [0.1 keV; 20 keV] is a critical issue for the plasma core performances. Thus reliable tools are required to monitor the local impurity density and avoid W accumulation. The WEST SXR diagnostic will be equipped with two new GEM (Gas Electron Multiplier) based poloidal cameras allowing to perform 2D tomographic reconstructions in tunable energy bands. In this paper tomographic capabilities of the Minimum Fisher Information (MFI) algorithm developed for Tore Supra and upgraded for WEST are investigated
Permanent Link: http://hdl.handle.net/11104/0268069