A high‐spatial‐resolution three‐dimensional detector array for 30–200 keV X‐rays based on structured scintillators |
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Authors: | U L Olsen S Schmidt H F Poulsen |
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Institution: | Center for Fundamental Research: Metal Structures in Four Dimensions, Ris? National Laboratory, DK‐4000 Roskilde, Denmark |
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Abstract: | A three‐dimensional X‐ray detector for imaging 30–200 keV photons is described. It comprises a set of semi‐transparent structured scintillators, where each scintillator is a regular array of waveguides in silicon, and with pores filled with CsI. The performance of the detector is described theoretically and explored in detail through simulations. Based on available hardware, a spatial resolution of 1 µm is obtainable. The resolution of a single screen is shown to be determined only by the pitch, at least up to 100 keV. In comparison with conventional homogeneous screens, an improvement in efficiency by a factor of 5–15 is obtainable. The cross‐talk between screens in the three‐dimensional detector is shown to be negligible. The three‐dimensional concept enables ray‐tracing and super‐resolution algorithms to be applied. |
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Keywords: | scintillator detector imaging hard X‐rays simulation |
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