Design of soft-X-ray tomographic system in WEST using GEM detectors

0453747 - ÚFP 2016 RIV CH eng J - Journal Article
Mazon, D. - Chernyshova, M. - Jiolat, G. - Czarski, T. - Malard, P. - Kowalska-Strzeciwilk, E. - Jablonski, S. - Figacz, W. - Zagorski, R. - Kubkowska, M. - Kasprowicz, G. - Pozniak, K. - Zabolotny, W. - Larroque, S. - Verger, J.-M. - O’Mullane, M. - Mlynář, Jan - Byszuk, A. - Wojenski, A.
Design of soft-X-ray tomographic system in WEST using GEM detectors.
Fusion Engineering and Design. 96-97, October (2015), s. 856-860. ISSN 0920-3796. E-ISSN 1873-7196.
[Symposium on Fusion Technology 2014(SOFT-28)/28./. San Sebastián, 29.09.2014-03.10.2014]
Institutional support: RVO:61389021
Keywords : Soft-X-ray * Gas detector * Tomography * WEST * Tokamak
OECD category: Nuclear related engineering
Impact factor: 1.301, year: 2015
http://www.sciencedirect.com/science/article/pii/S0920379615002215

In metallic tokamaks, the interplay between particle transport and MagnetoHydroDynamic (MHD) activity might lead to impurities accumulation and finally to disruption. Studying such phenomena is thus essential if stationary discharges are to be achieved. Measuring the soft X-ray (SXR) radiation ([0.1 keV; 20 keV]) of magnetic fusion plasmas is a standard way of accessing valuable information on particle transport and MHD. Generally, like at Tore Supra (TS), the analysis is performed with a 2D tomographic system composed of several cameras equipped with silicon barrier diodes (SBD). On WEST the installation of an upper divertor masks many of the actual TS vertical diodes so that no proper tomography is possible. This paper presents the design of a new SXR diagnostic for the WEST project developed in collaboration with IPPLM (Poland) and the Warsaw University of Technology, based on a triple gas electron multiplier (GEM) detector.
Permanent Link: http://hdl.handle.net/11104/0254474