Abstract
We have developed a Glass Gas Electron Multiplier (Glass GEM, G-GEM), which is composed of two copper electrodes separated by a photosensitive etchable glass substrate having holes arranged in a hexagonal pattern. In this paper, we report the result of imaging using a G-GEM combined with a 2D electronic charge readout. We used a crystallized photosensitive etchable glass as the G-GEM substrate. A precise X-ray image of a small mammal was successfully obtained with position resolutions of approximately 110 to 140 μm in RMS.
Highlights
The gas electron multiplier is one of the most commonly used Micro Pattern Gas Detectors [1]
We developed a new type of MPGD, Glass Gas Electron Multiplier (G-GEM) [2]
We report on the results, and discuss the position resolution obtained with the setup
Summary
The gas electron multiplier is one of the most commonly used Micro Pattern Gas Detectors [1]. It has a large-area imaging capability with high position resolution because of its numerous microholes. If we use the thick substrate, the charge-up of avalanche electrons on the hole surface becomes serious because the large part of the insulator is exposed to the operational gas. This problem is resolved by using the low volume resistivity glass for the substrate. We report on the results, and discuss the position resolution obtained with the setup
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