Abstract
The novel gaseous detector “Micro Pixel Chamber (μ-PIC)” has been developed for X-ray, gamma-ray and charged particle imaging. The μ-PIC is made based on a double-sided printing circuit board, by which a large size detector could be produced easily. The operation tests were performed successfully using a 3 cm×3 cm μ -PIC with a 0.4 mm pitch. The gas gain and stability were measured in these tests. There is neither gain reduction nor discharge between anode and cathode at a gain of 10 3 for 5 days continuous operation. Also, no gain decrease was observed up to 10 7 cps(counts per second)/mm 2 intense X-ray irradiation.
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