Abstract
RadCam™ is a detection system developed by RMD for gamma ray imaging. The system images and tracks radiation contamination and its distribution. The current system is based on a CsI:Na scintillator coupled to a position-sensitive photomultiplier tube (PS-PMT). The image is obtained either using MURA coded aperture or pin-hole masks. Detected signals are decoded to produce radiation distribution that is overlaid on an image from a video camera (real-time). Due to increased focus on neutron detection, we recently started upgrading the system with a new scintillating material capable of simultaneous gamma ray and neutron detection - Cs <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> LiYCl <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> (CLYC). Due to excellent pulse-shape discrimination, CLYC provides dual-mode detection of gamma-rays and neutrons while cleanly separating the signals from these two types of radiation. In addition, CLYC delivers better energy resolution than classical scintillators, such as CsI:Na. In this paper we present our initial results obtained with a system in which the original CsI:Na crystal was replaced with a CLYC scintillator.
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