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arXiv · hep-ex/0301008

Performance of large area Micro Pixel Chamber

T. Nagayoshi·H. Kubo·K. Miuchi·A. Ochi·R. Orito·A. Takada·T. Tanimori·M. Ueno
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Abstract

A novel gaseous two-dimensional imaging detector "Micro Pixel Chamber (micro-PIC)" has been developed. This detector is based on double sided printed circuit board (PCB). We have developed large area (10cm x 10cm) micro-PICs with 65536 pixel anodes of 400um pitch on a 100um thick insulating substrate. Achieved energy resolution was 30% (FWHM) at 5.9keV, and a gas gain of 7000 was obtained with argon ethane (8:2) gas mixture. This gain is high enough to detect minimum ionizing particles with such a small electrode pitch. Although several discharges occurred during 65 hours continuous operation, the detectors have kept stable operation with high gain. The micro-PIC is a useful detector for many applications e.g. X-ray, gamma ray, and charged particle imaging. The micro electrode structure allows us to measure directions of primary electrons due to incident X-rays or gamma rays, which provide a strong method for X-ray polarimetry and gamma-ray imaging.

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T. Nagayoshi, H. Kubo, K. Miuchi, A. Ochi, R. Orito, A. Takada, T. Tanimori, M. Ueno. 2003-01-09. Performance of large area Micro Pixel Chamber. https://doi.org/10.1016/j.nima.2003.08.047

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