Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Advantages of Al based GEM detector aimed at plasma soft-semi hard X-ray radiation imaging

Chernyshova, Maryna, Malinowski, Karol, Czarski, Tomasz, Kowalska-Strzeciwilk, Ewa, Linczuk, Pawel, Wojenski, Andrzej, Krawczyk, Rafal Dominik and Melikhov, Yevgen 2019. Advantages of Al based GEM detector aimed at plasma soft-semi hard X-ray radiation imaging. Fusion Engineering and Design 146 , pp. 1039-1042. 10.1016/j.fusengdes.2019.01.153
Item availability restricted.

[img] PDF - Accepted Post-Print Version
Restricted to Repository staff only until 7 February 2020 due to copyright restrictions.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (834kB)

Abstract

Development of gaseous detectors, more specifically Gas Electron Multiplier (GEM) based detectors, for application at tokamak plasma radiation monitoring/imaging in Soft−Semi Hard X-ray (S−SH) region is an ongoing research activity aiming to deliver valuable information on plasma shape, magnetic configuration, non-axisymmetry phenomena of the plasma, etc. Wide radiation range and brightness of plasma radiation impose some restrictions on choice of materials in the detecting chamber, as their interaction with the incident radiation may disrupt original signals. This work proposes usage of aluminum as GEM foils electrodes for the first time. The detector based on these foils was constructed and examined. The operational characteristics and spectral capabilities of such detector were compared with the ones based on the standard (commonly used) copper GEM foils. The laboratory tests were performed using X-ray tube and 55Fe sources to examine detectors’ capabilities in energy-resolved imaging. Additionally, simulations of origin and number of the generated electrons, which determine the detector signal, were performed for Al and Cu GEM foils for a wide energy range of incident photons. The experimental and modelling data demonstrated that Cu based GEM detector produces higher parasitic signal than Al one necessitating total elimination of copper from detector’s chamber.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Elsevier
ISSN: 0920-3796
Date of First Compliant Deposit: 29 October 2019
Date of Acceptance: 30 January 2019
Last Modified: 29 Oct 2019 12:00
URI: http://orca.cf.ac.uk/id/eprint/126240

Citation Data

Cited 2 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics