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Proceedings Paper

Prototype AEGIS: a pixel-array readout circuit for gamma-ray imaging
Author(s): H. Bradford Barber; F. L. Augustine; L. Furenlid; C. M. Ingram; G. P. Grim
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Paper Abstract

Semiconductor detector arrays made of CdTe/CdZnTe are expected to be the main components of future high-performance, clinical nuclear medicine imaging systems. Such systems will require small pixel-pitch and much larger numbers of pixels than are available in current semiconductor-detector cameras. We describe the motivation for developing a new readout integrated circuit, AEGIS, for use in hybrid semiconductor detector arrays, that may help spur the development of future cameras. A basic design for AEGIS is presented together with results of an HSPICETM simulation of the performance of its unit cell. AEGIS will have a shaper-amplifier unit cell and neighbor pixel readout. Other features include the use of a single input power line with other biases generated on-board, a control register that allows digital control of all thresholds and chip configurations and an output approach that is compatible with list-mode data acquisition. An 8x8 prototype version of AEGIS is currently under development; the full AEGIS will be a 64x64 array with 300 μm pitch.

Paper Details

Date Published: 16 September 2005
PDF: 10 pages
Proc. SPIE 5923, Penetrating Radiation Systems and Applications VII, 59230H (16 September 2005); doi: 10.1117/12.624924
Show Author Affiliations
H. Bradford Barber, Univ. of Arizona (United States)
F. L. Augustine, Augustine Engineering (United States)
L. Furenlid, Univ. of Arizona (United States)
C. M. Ingram, Univ. of Arizona (United States)
G. P. Grim, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 5923:
Penetrating Radiation Systems and Applications VII
F. Patrick Doty; H. Bradford Barber; Hans Roehrig, Editor(s)

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