Title :
Imaging detectors based on the gas electron multiplier scintillation light
Author :
Fraga, F.A.F. ; Fetal, T.G. ; Margato, L.M.S. ; Ivaniouchenkov, I. ; Marques, R. Ferreira ; Policarpo, A.J.P.L.
Author_Institution :
Dept. de Fisica, Coimbra Univ., Portugal
Abstract :
We have developed a novel type of two-dimensional, large area, low granularity gaseous position sensitive detector using a gas electron multiplier foil (GEM) and a standard CCD camera with glass optics. First results obtained with a 10×10 cm2 GEM foil demonstrate that the position resolution with 7 keV X-rays using a Xe-CO2 mixture is better than 100 μm (RMS). The complete system is described and experimental results on position resolution, efficiency and linearity are shown. Data on light efficiency for mixtures of interest for detection of other types of radiation, such as neutrons, are also presented. Possible applications of this type of detector are considered
Keywords :
X-ray detection; carbon compounds; gas mixtures; gas scintillation detectors; position sensitive particle detectors; xenon; Xe-CO2; Xe-CO2 mixture; efficiency; gas electron multiplier foil; gas electron multiplier scintillation light; imaging detectors; light efficiency; linearity; low granularity gaseous position sensitive detector; position resolution; standard CCD camera; Charge coupled devices; Charge-coupled image sensors; Electron multipliers; Electron optics; Glass; Optical imaging; Optical sensors; Position sensitive particle detectors; Standards development; X-rays;
Conference_Titel :
Nuclear Science Symposium, 1999. Conference Record. 1999 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5696-9
DOI :
10.1109/NSSMIC.1999.845794
