The design of underwater γ dose rate measuring device of HFETR

According to the requirement of dose source survey of irradiation facility of High Flux Engineering Test Reactor, this paper designed a set of device to measure γ dose rate underwater. The device uses motor control detector to achieve automatic measurement. Though the design of the collimator, the alignment measurement of underwater is realized. Though the design of drive mechanism, the movement control of detector is realized. Though the design of monitoring software, the human computer interaction and data management is realized. The test and application results show that the function of device is stable and reliable, and the application effect is good. (authors)