Evaluation of a capillary plate gas detector filled with Ne+CF₄ and Ar+CF₄ gas mixtures

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• 作者：F. Tokanai ; H. Sakurai ; S. Gunji ; T. Sumiyoshi ; H. Sugiyama ; Y. Fujita ; T. Atsumi ; Y. Ohishi ; T. Okada ; S. Kishimoto
• 关键词：Capillary plate ; Imaging detectors ; Pixels detectors ; Gas scintillation proportional counters
• 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
• 出版年：2007
• 期刊代码：41_01689002
• 类别：ph
• 出版时间：21 October 2007
• 卷：581
• 期：1-2
• 页码：236-240
• 文件大小：771 K

摘要

We report on the basic characteristics of a capillary plate (CP) gas detector filled with a Ne(90%)+CF₄(10%) gas mixture. Both the charge and light signals were investigated. Gas gains of up to 10⁴ can be achieved with the gas mixture. The energy resolutions of the charge and light signals were 17.0%and 24.2%for 6 keV X-rays, respectively, at a gas gain of 10⁴. These results were compared to those obtained with an Ar(90%)+CF₄(10%) gas mixture. The emission spectrum of the gas scintillation light shows the presence of the atomic lines of Ne. There were also two broad continua attributed to CF₄. We exploit the scintillation light for the realization of a pixelized two-dimensional imaging gas detector. Sharp images of X-rays and a spatial resolution of less than were obtained using an optical imaging system consisting of a standard photographic lens and a CCD camera.