A Microprocessor Controlled, Personnel Thermoluminescence Dosimetry Reader

Using a DEC LSI-11 microprocessor, we have developed a thermoluminescence dosimetry reader for personnel dosimetry. This microprocessor provides system control, accumulates data for temporary storage on a cassette, and later outputs the data to a large computer. The microprocessor also provides a human/system interface through a computer terminal. A programmable high-voltage supply and a light-emitting diode are used in the reader svstem to automatically control photomultiplier tube gain.