New type of imaging x-ray detector using a capillary plate

Hirohisa Sakurai; S. Saito; Motosaku Noma; Shuichi Gunji; Makiko Tsukahara; Tsutomu Tamura

doi:10.1117/12.278899

15 October 1997 New type of imaging x-ray detector using a capillary plate

Hirohisa Sakurai, S. Saito, Motosaku Noma, Shuichi Gunji, Makiko Tsukahara, Tsutomu Tamura

Proceedings Volume 3114, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII; (1997) https://doi.org/10.1117/12.278899
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

We constructed an optical imaging x-ray detector with a capillary gas proportional counter (CGPC), a focusing mirror system, and an image intensified CCD camera. The CGPC consists of an absorption region for x-rays, which also operates as a drift region of electron clouds, and a gas proportional scintillation region in a capillary plate. With a gas mixture of Xe plus 2% CH₄ at 1 atm and a gas gain 8000, the light output from the CGPC is several tens thousand times larger than that of a typical NaI(Tl) scintillator and it is enough to image electron clouds due to a few tens keV x rays. To investigate the imaging ability, images for tracks due to (alpha) particles (²⁴¹Am) of 5.5 MeV were taken in the gas mixture of Xe plus CH₄, for the several reduced fields in the drift region. We confirmed that the images were most clearly observed at around the reduced fields of 40 V/cm(DOT)atm.

Citation Download Citation

Hirohisa Sakurai, S. Saito, Motosaku Noma, Shuichi Gunji, Makiko Tsukahara, and Tsutomu Tamura "New type of imaging x-ray detector using a capillary plate", Proc. SPIE 3114, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VIII, (15 October 1997); https://doi.org/10.1117/12.278899

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