Efficiency at different interaction depths in large coplanar CdZnTe detectors

This paper presents some studies performed with a state of the art large volume, 1.5 cm diameter × 1.0 cm thick, cylindrical CdZnTe coplanar detector with a new anode pattern design in the line of units previously reported. The absolute efficiency of the detector for different interaction depths is quantified. The detectorʹs ideal response is simulated with a Monte Carlo code and compared with experimental results. Some conclusions regarding interaction depth profiles, detector efficiency, the new anode pattern design and device quality are reported. These are further compared with the behavior of previous coplanar units.