Abstract
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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