Spatial resolution measurement of Triple-GEM detector and diffraction imaging test at synchrotron radiation

Y. L. Zhang; H. R. Qi; Z. W. Wen; H. Y. Wang; Q. Ouyang; Y. B. Chen; J. Zhang; B. T. Hu

doi:10.1088/1748-0221/12/04/p04015

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arXiv · 1702.03072

Spatial resolution measurement of Triple-GEM detector and diffraction imaging test at synchrotron radiation

Y. L. Zhang·H. R. Qi·Z. W. Wen·H. Y. Wang·Q. Ouyang·Y. B. Chen·J. Zhang·B. T. Hu

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Abstract

A triple-GEM detector with two-dimensional readout is developed. The detector provides high position resolution for powder diffraction experiments at synchrotron radiation. Spatial resolution of the detector is measured in the lab using a 55Fe X-ray source. A resolution of about 110 um FWHM is achieved. The energy resolution is better than 27% for 5.9 keV X-rays. The detector's validity under illumination of photons in particular energy range is verified using a Cu X-ray tube. Imaging of the head of a wire stripper with X-ray tube demonstrates its imaging ability. A diffraction imaging experiment using the sample of powder SiO2 is successfully carried out at 1W2B laboratory of Beijing Synchrotron Radiation Facility (BSRF). Different diffraction rings are clearly seen under various X-ray energies.

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Y. L. Zhang, H. R. Qi, Z. W. Wen, H. Y. Wang, Q. Ouyang, Y. B. Chen, J. Zhang, B. T. Hu. 2017-02-10. Spatial resolution measurement of Triple-GEM detector and diffraction imaging test at synchrotron radiation. https://doi.org/10.1088/1748-0221/12/04/p04015

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