Real-time implementation with FPGA-based DAQ system of a probabilistic disruption predictor from scratch

Abstract

A new compact gamma-ray spectrometer was developed in order to optimise the measurement of bremsstrahlung radiation emitted from runaway electrons in the MeV range. The detector is based on a LYSO:Ce scintillator coupled to silicon photomultipliers and is insensitive to magnetic fields. A dedicated electronic board was developed to optimise the signal readout as well as for on-line control of the device. The detector combines a dynamic range up to 10 MeV with moderate energy non linearity, counting rate capabilities up to a few MHz and an energy resolution that extrapolates to a few % in the MeV range, thus meeting the requirements for its application to runaway electron studies by bremsstrahlung measurements in the gamma-ray energy range.