Characteristics of capillary gas proportional counter

Hirohisa Sakurai; Makiko Tsukahara; S. Saito; Y. Takamura; H. Sugeno; Motosaku Noma; Tsutomu Tamura

doi:10.1117/12.254008

18 October 1996 Characteristics of capillary gas proportional counter

Hirohisa Sakurai, Makiko Tsukahara, S. Saito, Y. Takamura, H. Sugeno, Motosaku Noma, Tsutomu Tamura

Proceedings Volume 2806, Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions; (1996) https://doi.org/10.1117/12.254008
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A new type of gas proportional counter employing a capillary plate has been developed. The capillary plate consists of a bundle of fine glass capillaries with electrodes on both the inlet and the outlet. The capillaries are 100 micrometer in diameter and 800 micrometer in length and gas multiplication occurs in each capillary. The operational conditions of the electric fields in the drift region were investigated by applying the drift potential. The better electric fields were around 0.28 volts/cm(DOT)Torr for argon+10%methane at the pressure of 760 Torr. The energy resolution was 21% for 5.9 keV x rays at the gas gain of 3,000. The gas gain, the energy resolution and the detection efficiency were uniform at the radial positions in diameter of 16 mm for the capillary plate of 20 mm in diameter. The non-uniformity was within 2% of the average for the gas gain. We can expect imaging detectors with the capability of fine position resolution as an application.

Citation Download Citation

Hirohisa Sakurai, Makiko Tsukahara, S. Saito, Y. Takamura, H. Sugeno, Motosaku Noma, and Tsutomu Tamura "Characteristics of capillary gas proportional counter", Proc. SPIE 2806, Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions, (18 October 1996); https://doi.org/10.1117/12.254008

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