Imaging characteristics of glass capillary plate gas detector

✍ Scribed by F. Tokanai; H. Sugiyama; T. Sumiyoshi; H. Sakurai; S. Gunji; T. Atsumi; T. Endo; Y. Fujita; Y. Ohishi; T. Okada; S. Kishimoto

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 508 KB
• Volume: 623
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2010.02.174

✦ Synopsis

A glass capillary plate (CP) gas detector with gas mixtures of He, Ne, Ar, and Xe has been successfully operated as a visible and near-infrared (NIR) scintillation proportional counter. Gas gains of up to 10 4 can be achieved using these gas mixtures. The scintillation light emitted during the generation of electron avalanches can be observed using a photomultiplier tube (PMT) and a compact optical imaging system that consists of a CP gas detector and a cooled CCD camera coupled to lens optics. Using this optical imaging system, clearer X-ray images have been obtained with the above gas mixtures. The dependence of the imaging quality on the pressure in the range 0.25-1 atm was also investigated for the Ar (90%) +CF 4 (10%) gas mixture. The successful operations using these gas mixtures have allowed us to realize a novel imaging device with a CP gas detector for gaseous PMTs sensitive to visible light.