Radiation Detection Group

The OSU Compact Gamma Spectrometer (OCGS) was designed as a compact, low-cost gamma-ray spectrometer that can easily be wirelessly connected to a personal mobile device for on-the-go radioisotope measurement, identification, and personal dosimetry. The OCGS is based on a silicon photomultiplier (SiPM) and FPGA-based digital pulsed processor. The SiPM has several advantages compared to the more traditional PMT, including better durability, insensitivity to magnetic fields, smaller size, and lower bias voltage. A prototype device using a CsI(Tl) scintillator crystal has been assembled and tested in our laboratory at OSU. The OCGS is also easily able to be adapted to neutron detection by using different scintillator materials, such as CLLB and Stilbene.