Ground-based calibration and characterization of the Fermi gamma-ray burst monitor detectors
Ground-based calibration and characterization of the Fermi gamma-ray burst monitor detectors
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DOI：
10.1007/s10686-008-9135-4
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发表时间：
2009-05-01
影响因子：
3
通讯作者：
Wilson-Hodge, C. A.
中科院分区：
文献类型：
--
作者：
Bissaldi, E.;von Kienlin, A.;Wilson-Hodge, C. A.
美国宇航局费米伽马射线太空望远镜的科学目标之一是研究伽马射线暴(GRB)。费米伽马射线爆发监测器(GBM)是为费米任务探测和定位爆发而设计的。通过12个NaI(Tl)(8keV到1 MeV)和两个BGO(0.2到40 MeV)闪烁探测器的阵列，GBM将费米的主要仪器广域望远镜的能量范围(20 MeV到>；300GeV)扩展到目前伽玛暴数据库的传统范围。利用蒙特卡罗模拟确定了GBM仪器对伽玛暴的物理探测器响应，并通过地面单独的探测器定标测量进行了支持和验证。我们给出了作为能量和角度的函数的主要仪器属性，包括通道-能量关系、能量分辨率、有效面积和空间均匀度。
One of the scientific objectives of NASA's Fermi Gamma-ray Space Telescope is the study of Gamma-Ray Bursts (GRBs). The Fermi Gamma-Ray Burst Monitor (GBM) was designed to detect and localize bursts for the Fermi mission. By means of an array of 12 NaI(Tl) (8 keV to 1 MeV) and two BGO (0.2 to 40 MeV) scintillation detectors, GBM extends the energy range (20 MeV to > 300 GeV) of Fermi's main instrument, the Large Area Telescope, into the traditional range of current GRB databases. The physical detector response of the GBM instrument to GRBs is determined with the help of Monte Carlo simulations, which are supported and verified by on-ground individual detector calibration measurements. We present the principal instrument properties, which have been determined as a function of energy and angle, including the channel-energy relation, the energy resolution, the effective area and the spatial homogeneity.