21 November 2000 Analog processing of signals from a CZT strip detector with orthogonal coplanar anodes
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Abstract
We present the requirements, design, and performance of an analog circuit for processing the non-collecting anode strip signals from a cadmium zinc telluride (CZT) strip detector with orthogonal coplanar anodes. Detector signal simulations and measurements with a prototype are used to define the range of signal characteristics as a function of location of the gamma interaction in the detector. The signals from the non- collecting anode strip electrodes are used to define two of the three spatial coordinates including the depth of interaction, the z dimension. Analog signal processing options are discussed. A circuit to process the signals from the non- collecting anode strips and extract from them the depth of interaction is described. The circuit employs a time-over- threshold (TOT) measurement. The performance of the detector prototype with a preliminary version of this circuit is presented, and future development work is outlined.
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Kipp Larson, Valentin T. Jordanov, Mark L. McConnell, John R. Macri, James M. Ryan, Allen Drake, Louis-Andre Hamel, Olivier Tousignant, "Analog processing of signals from a CZT strip detector with orthogonal coplanar anodes", Proc. SPIE 4141, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II, (21 November 2000); doi: 10.1117/12.407596; https://doi.org/10.1117/12.407596
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