Development of new generation-type multi-functional electronic personal dosemeters

We have developed advanced new-generation-type small, light, multi-functional electronic personal dosemeters (Norf. series) using silicon semiconductor radiation detectors for dose management of workers at nuclear power plants and ACCELERATOR EXPERIMENTAL FACILITIES. These dosemeters are 60 x 78 x 27 mm³ in size and approximately 103 to 115 g in weight, which are capable of measuring personal gamma-ray dose equivalent (Norf.), gamma-ray and neutron dose equivalents (Norf.) and gamma-ray and beta-ray dose equivalents (Norf.). These dosemeters are driven by a lithium battery, Cairo, continuously for about 2000 hours in normal use and can read out the time sequential dose equivalent data via infrared (IR) communication. In addition to IR communication method, Norf. can read out the dose equivalent data via radio communication using an exclusive radio communication unit. (author)