Abstract
The MRG10 mobile roadway gamma monitor is described in this paper. This system is developed to meet requirements to survey roadways for gamma contamination in nuclear power plants and other nuclear facilities. The system consists of a four wheel electric utility vehicle, two detector modules and a MCU based controller. The detector module consists of a lead shielded large area plastic scintillator(1000×500×50 mm), a PMT and amplifier unit, a MCU based counting unit, and a semiconductor cooler. The detector module and controller unit are connected with RS-485 bus. When a survey starts, the controller unit takes control of the vehicle speed, displays the measurement data, and will switch on the semiconductor cooler when the temperature of detector module is higher than a set point.
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