An imaging CdZnTe detector with coplanar orthogonal anode strips

Book · Thu Dec 31 04:00:00 EST 1998

OSTI ID:323847

Hamel, L A; Tousignant, O; Couillard, M ^[1]

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1. Univ. of Montreal, Quebec (Canada); and others

A novel electrode configuration for CZT imaging devices is presented. It is made of focusing, non-collecting anode strips, in one dimension, and collecting anode pixels, interconnected in rows, in the orthogonal dimension. The simulation of such an imaging detector is presented. First, field lines in the detector are computed that show that electrons generated in {gamma}-ray events are collected on the pixels. Charge signals, induced on the pixel and on the strip by drifting electrons, are calculated for several points of interaction inside the detector unit cell. These show that this new detector should retain the spectroscopic and detection efficiency advantages of single carrier (electrons) charge sensing devices such as pixel detectors or spectrometers with controlling electrodes. Furthermore, it retains the main advantage of conventional strip detectors, i.e. an N x N array of imaging pixels realized with only 2N electronic channels. An additional potential advantage is the measurement of the third coordinate, i.e., the depth of interaction in the detector.

• Sponsoring Organization: National Aeronautics and Space Administration, Washington, DC (United States); Natural Sciences and Engineering Research Council of Canada, Ottawa, ON (Canada)
• OSTI ID: 323847
• Report Number(s): CONF-971201--
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
CADMIUM TELLURIDES
DESIGN
ELECTRODES
ENERGY RESOLUTION
GAMMA DETECTION
GAMMA SPECTROMETERS
IMAGES
SEMICONDUCTOR DETECTORS
THEORETICAL DATA
ZINC TELLURIDES