Development of GEM detector for tokamak SXR tomography system: Preliminary laboratory tests

Chernyshova, M., Czarski, T., Malinowski, K., Kowalska-Strzciwilk, E., Król, J., Pozniak, K., Kasprowicz, G., Zabolotny, W., Wojenski, A., Krawczyk, R., Kolasiski, P., Demchenko, I. and Melikhov, Yevgen ORCID: https://orcid.org/0000-0002-9787-5238 2017. Development of GEM detector for tokamak SXR tomography system: Preliminary laboratory tests. Fusion Engineering and Design 10.1016/j.fusengdes.2017.03.107

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Abstract

he GEM based detecting system is currently being developed for poloidal tomography to be used at WEST project tokamak. It consists of two GEM detectors of planar and of cylindrical geometry for the vertical and horizontal ports, respectively. Several laboratory tests were conducted to assess the performance of the prototype detectors and verify the proposed design. For that, the measurements of the detectors with 55Fe source and X-ray generator were performed. The detector’s behavior was tested for two gas mixtures: Ar/CO2 and Ar/CO2/CF4 and the detector amplification dependencies on high photon flux, start-up and applied high voltages are demonstrated. The cluster sizes of the generated anode charge and energy resolution are also provided.

Item Type:	Article
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Uncontrolled Keywords:	Nuclear instruments for hot plasma diagnostics; X-ray detectors; Electron multipliers (gas); Micropattern gaseous detectors
Publisher:	Elsevier
ISSN:	09203796
Date of Acceptance:	21 September 2017
Last Modified:	06 Jul 2023 02:12
URI:	https://orca.cardiff.ac.uk/id/eprint/104004

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