Analysis of Pulse Height Distributions of a Gas Electron Multiplier Detector by Using Cs-137 and Sr-90 Radioactive Sources
- 19 Downloads
A double-layer gas electron multiplier (GEM) chamber was developed at the Physics Department, Changwon National University. Its performance was evaluated using Cs-137 and Sr-90 radiation sources. Using a gas mixture filling of 85% argon and 15% carbon dioxide, in the one-channel GEM chamber (5 cm × 5 cm), the pulse height distributions were detected at atmospheric pressure and room temperature. The signals from the 32-keV and the 36-keV characteristic X-rays emitted owing to internal conversion in the Cs-137 source, as were signals from the beta emissions and 662-keV gamma rays. The signals due to the 662-keV gamma rays were separated from the other signals by placing 1 mm or 1.6 mm intercepting copper plates under the source. Furthermore, regions of the GEM detector in which the photo- and Compton electrons were produced by the X-rays (32 keV and 36 keV) and gamma rays (662 keV) were analyzed.
KeywordsGas electron multiplier detector Cs-137 Sr-90 Bethe-Block formula Pulse height distribution Landau distribution Mass attenuation coefficient Internal conversion process
Unable to display preview. Download preview PDF.
- R. Bouclier et al., Nucl. Sci. NS-44, 646 (1997)Google Scholar
- CERN Gas Detector Development Group, https://doi.org/gdd.web.cern.ch/GDD/.
- H. Cho et al., J. Korean. Phys. Soc. 42, 770 (2003)Google Scholar
- [6a]P. C. Johns et al., SPIE TD01, 367 (2002).Google Scholar
- A. White, Update on GEM-based Digital Hadron Calorimetry (McGill University, Montreal, 2006), unpublished.Google Scholar
- K. Nagata et al., J. Phys. D. Appl. Phys. 9, 1907 (1976); Maria Physicist, https://doi.org/vlado.fmf.unilj.si/texceh/kako/tex2pdf/ex/maria-1.pdf (1999)ADSCrossRefGoogle Scholar