Prototype AEGIS: a pixel-array readout circuit for gamma-ray imaging

H. Bradford Barber; F. L. Augustine; L. Furenlid; C. M. Ingram; G. P. Grim

doi:10.1117/12.624924

16 September 2005 Prototype AEGIS: a pixel-array readout circuit for gamma-ray imaging

H. Bradford Barber, F. L. Augustine, L. Furenlid, C. M. Ingram, G. P. Grim

Author Affiliations +

Proceedings Volume 5923, Penetrating Radiation Systems and Applications VII; 59230H (2005) https://doi.org/10.1117/12.624924
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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 HSPICE^TM 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.

Citation Download Citation

H. Bradford Barber, F. L. Augustine, L. Furenlid, C. M. Ingram, and G. P. Grim "Prototype AEGIS: a pixel-array readout circuit for gamma-ray imaging", Proc. SPIE 5923, Penetrating Radiation Systems and Applications VII, 59230H (16 September 2005); https://doi.org/10.1117/12.624924

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