Development of the wide field burst monitor

研制了一种用于伽玛射线偏振测量的小卫星伽玛射线暴定位探测系统。该探测器由CsI闪烁体与雪崩光电二极管耦合组成，即使在室温下也能探测到30 keV的较低能量。为了评估系统在轨道上的性能，我们进行了反映卫星整体几何形状的射线跟踪模拟，并证实我们的探测器系统可以在5度的公差范围内确定grb的位置。

A detector system for position determination of gamma-ray bursts aboard the very small satellite for gamma-ray polarimetry was developed. The detector consists of CsI scintillator coupled with avalanche photodiodes, which enabled a lower detectable energy of 30 keV even at a room temperature. To evaluate the performance of the system on orbit we ran ray-trace simulation reflecting the whole geometry of the satellite, and confirmed that our detector system can determine the position of GRBs within a tolerance of 5 degrees.