Silicon PIN diode based electron-gamma coincidence detector system for Noble Gases monitoring

We present a new second generation SiPIN based electron-photon coincidence detector system developed by Lares Ltd. for use in the Noble Gas measurement systems of the International Monitoring System and the On-site Inspection verification regimes of the Comprehensive Nuclear-Test Ban Treaty (CTBT). The SiPIN provide superior energy resolution for electrons. Our work describes the improvements made in the second generation detector cells and the potential use of such detector systems for other applications such as In-Situ Kr-85 measurements for non-proliferation purposes. - Highlights: • Improvements of the detector system are discussed and compared. • Improvements in the calibration procedure discussed. • Suitability of the detector system for the measurement of Kr-85 and the expected sensitivity is presented.