A low-noise current-sensitive preamplifier for X-ray computed tomography with applying a charge-sensitive preamplifier |
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| Authors: | Ikuo Kanno Hideaki Onabe |
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| Affiliation: | 1. Department of Nuclear Engineering, Graduate School of Engineering, Kyoto University , Kyoto, Japan kanno@nucleng.kyoto-u.ac.jp;3. Raytech Corporation , Utsunomiya, Tochigi, Japan |
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| Abstract: | ABSTRACT A low-noise current-sensitive preamplifier was developed for aiming low-dose X-ray computed tomography with applying a charge-sensitive preamplifier. We compared the number of X-ray photons needed for current measurement with the new preamplifier with that needed with a conventional preamplifier. Also, the dose rates for above conditions were measured by a commercial dose rate meter. Results show that the new preamplifier reduced the number of X-ray photons needed by two orders of magnitude compared with the conventional one. |
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| Keywords: | X-ray current measurement low-noise preamplifier computed tomography dose rate experiment |
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