NDLI: Low-power wide-dynamic-range readout system for a 64-channel multi-anode PMT of a scintillation gamma camera

Content Provider	IEEE Xplore Digital Library
Author	Kubo, H. Hattori, K. Ida, C. Iwaki, S. Kabuki, S. Kubo, S. Kurosawa, S. Miuchi, K. Nishimura, H. Okada, Y. Takada, A. Takahashi, M. Tanimori, T. Tsuchiya, K. Ueno, K.
Copyright Year	2008
Description	Author affiliation: ClearPulse Co., 6-25-17 Chuo, Ohta-ku, Tokyo 143-0024, Japan (Kubo, S.) \|\| Department of Physics, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwake, Sakyo-ku, 606-8502, Japan (Kubo, H.; Hattori, K.; Ida, C.; Iwaki, S.; Kabuki, S.; Kurosawa, S.; Miuchi, K.; Nishimura, H.; Okada, Y.; Takahashi, M.; Tanimori, T.; Tsuchiya, K.; Ueno, K.) \|\| Scientific Balloon Laboratory, ISAS, JAXA, Yoshinodai 3-1-1, Sagamihara, Kanagawa 229-8510, Japan (Takada, A.)
Abstract	We have developed a low-power wide-dynamic-range readout system for a 64-channel multi-anode photomultiplier (PMT) of a scintillation gamma camera. Each anode is individually read with the system that contains discrete devices of amplifiers, comparators, sample-hold ADCs, and FPGAs. The size of the system which is designed for a two-dimensional array of Hamamatsu flat panel PMT H8500 is 5×5×14 $cm^{3}.$ The input dynamic range is variable by replacing the feedback capacitor of the preamplifier (e.g., 700 pC and 4000 pC for GSO(Ce) and LaBr(Ce) crystals, respectively). The serialized ADC data are sent to a VME sequence module. The total power consumption is 1.6 W per 64 channels. With this system we have developed a gamma camera using an 8×8 array of GSO(Ce) pixels with a pixel size of 6×6×13 $mm^{3}$ coupled to an H8500, and obtained flood-field irradiation images at energies from 30 keV to 1.3 MeV. The energy resolution was 10.8±0.4% (FWHM) at 662 keV. In addition, we used the readout system for an 8×8 array of LaBr(Ce) pixels with a pixel size of 6×6×15 $mm^{3}$ and obtained a flood-field irradiation image at 662 keV.
Starting Page	1181
Ending Page	1185
File Size	9666368
Page Count	5
File Format	PDF
ISBN	9781424427147
ISSN	10957863
DOI	10.1109/NSSMIC.2008.4774613
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-19
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cameras Pixel Photomultipliers Anodes Field programmable gate arrays Dynamic range Feedback Capacitors Preamplifiers Crystals
Content Type	Text
Resource Type	Article

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