In general localization of radioactive sources or hotspots is a major issue for radiological safety of operators in nuclear facilities and in National Security. For this purpose, portable Gamma-Ray Imaging (GRI) systems allow remote localization of …
The development of instruments utilizing coded apertures has become more feasible with the progress of the Cd(Zn)Te hybrid detector technology. The collective performance of systems comprised by such devices can be evaluated in all the fields where …
Several small gamma cameras for radioguided surgery using CdTe or CdZnTe have parallel or pinhole collimators. Coded aperture imaging is a well-known method for gamma ray source directional identification, applied in astrophysics mainly. The increase …
We review the feasibility studies performed regarding the ability of a proposed portable radiation CdTe pixelated detecting system to localize radioactive sources. The proposed instrument is a stack of ten CdTe layers …
We present the development of a stacked gamma radiation detecting system, consisting of three layers of pixelated Cadmium Telluride detectors (PID350). A high speed (120 frames/s) data acquisition system has been developed in order the …
We present simulation studies on the ability of a proposed portable radiation detecting instrument to reconstruct images of radioactive sources. The instrument is a stack of ten CdTe layers placed 2 cm apart, consisting of 10000 …
Simulation studies are presented regarding the performance of algorithms that localize point‐like radioactive sources detected by a position sensitive portable radiation instrument (COCAE). The source direction is estimated by using the List Mode …
We present results on the reconstructed image resolution of a position sensitive radiation instrument (COCAE) based on extensive simulation studies. The reconstructed image resolution has been investigated in a wide range of incident photon energies …
The COCAE project develops an instrument for localization and identification of radioactive sources. For the localization task it will exploit the Compton scattered photons within its detecting layers. It is based on pixilated Cd(Zn)Te matrices in a …
Spectroscopic measurements are presented using the PID350 pixelated gamma radiation detectors. A high-speed data acquisition system has been developed in order to reduce the data loss during the data reading in case of a high flux of photons. A data …