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Proceedings Paper

Charge counting readout LSI for x-ray imaging and its applications
Author(s): Katsuyuki Takagi; Toshiyuki Takagi; Tsuyoshi Terao; Hisashi Morii; Akifumi Koike; Toru Aoki
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Paper Abstract

One of solutions to develop an energy resolved X-ray imager with sub-100μm pixel pitch is introduced. It consists of a small readout circuit and a data compressor in pixel. To realize spectroscopic readout circuit, charge counting architecture is adopted. And it equips time independence by removing transient response in analog signal processing and detector independence by controllability of time of signal processing for one pulse. An LSI implementing this system has been developed with 0.18um CMOS process. The pixel pitch is 80um and each pixel has 15 energy thresholds. The behavior of readout X-ray photon’s energy and data compression for photon-counting imaging has been verified by using CdTe detector. Furthermore, supporting other detectors such as TlBr and other energy weighting function than photon-counting are progressing.

Paper Details

Date Published: 9 September 2019
PDF: 6 pages
Proc. SPIE 11114, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXI, 111140G (9 September 2019); doi: 10.1117/12.2529747
Show Author Affiliations
Katsuyuki Takagi, ANSeeN Inc. (Japan)
Toshiyuki Takagi, ANSeeN Inc. (Japan)
Shizuoka Univ. (Japan)
Tsuyoshi Terao, ANSeeN Inc. (Japan)
Shizuoka Univ. (Japan)
Hisashi Morii, ANSeeN Inc. (Japan)
Akifumi Koike, ANSeeN Inc. (Japan)
Shizuoka Univ. (Japan)
Toru Aoki, ANSeeN Inc. (Japan)
Shizuoka Univ. (Japan)

Published in SPIE Proceedings Vol. 11114:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXI
Ralph B. James; Arnold Burger; Stephen A. Payne, Editor(s)

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