Author/Authors :
Judson، نويسنده , , D.S. and Boston، نويسنده , , A.J. and Coleman-Smith، نويسنده , , P.J and Cullen، نويسنده , , D.M. and Hardie، نويسنده , , A. and Harkness، نويسنده , , Hugh L.J. and Jones، نويسنده , , L.L. and Jones، نويسنده , , M. and Lazarus، نويسنده , , Alexander I. and Nolan، نويسنده , , P.J. and Pucknell، نويسنده , , V. and Rigby، نويسنده , , S.V. and Seller، نويسنده , , P. and Scraggs، نويسنده , , D.P. and Simpson، نويسنده , , J. and Sl، نويسنده ,
Abstract :
The PorGamRays project aims to develop a portable gamma-ray detection system with both spectroscopic and imaging capabilities. The system is designed around a stack of thin Cadmium Zinc Telluride (CZT) detectors. The imaging capability utilises the Compton camera principle. Each detector is segmented into 100 pixels which are read out through custom designed Application Specific Integrated Circuits (ASICs). This device has potential applications in the security, decommissioning and medical fields. This work focuses on the near-field imaging performance of a lab-based demonstrator consisting of two pixelated CZT detectors, each of which is bonded to a NUCAM II ASIC. Measurements have been made with point 133Ba and 57Co sources located ∼ 35 mm from the surface of the scattering detector. Position resolution of ∼ 20 mm FWHM in the x and y planes is demonstrated.
Keywords :
Cadmium , ASIC , Telluride , Imaging , Compton camera , CZT , Zinc
