Development of a Gamma-ray Burst Detector Based on the Silicon Drift Detector Array and Scintillators

Computer Science – Performance

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Gamma-Ray Sources, Gamma-Ray Bursts, Scintillation Detectors, X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

We propose a gamma-ray burst (GRB) detector combining the silicon drift detector (SDD) array and scintillators with broadband X-ray and gamma-ray coverage (0.5-1000 keV or more), high energy resolution (2-10%) and high time resolution (~μs) in space. To realize such compact high-performance detector without photomultiplier tubes, we constructed proto-type model using KETEK SDD with a detection area of 1 cm2 and BGO crystal. The detector shows a very good performance. Obtained FWHM energy resolution was 191 eV at 5.9 keV in the SDD, while 6.5 % at 662 keV in the BGO at -30 degrees C. Evaluation of the 7 channel SDD array and development of analog ASIC for its readout are also presented.

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