A low-noise current-sensitive preamplifier for X-ray computed tomography with applying a charge-sensitive preamplifier. Issue 1 (2nd January 2021)

• Record Type: Journal Article
• Authors: Kanno, Ikuo; Onabe, Hideaki
• Is Part Of: Journal of nuclear science and technology. Volume 58:Issue 1(2021)
• Page Start: 100
• Page End: 106
• Publication Date: 2021-01-02
• Subjects: X-ray -- current measurement -- low-noise preamplifier -- computed tomography -- dose rate -- experiment; Nuclear engineering -- Periodicals; Nuclear physics -- Periodicals; Nuclear energy -- Periodicals; 621.4805
• DOI: 10.1080/00223131.2020.1806136
• Languages: English
• ISSNs: 0022-3131

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.