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arXiv 0704.2184astro-ph
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GLAST Burst Monitor探测器的校准

Calibration of the GLAST Burst Monitor detectors

Andreas von Kienlin, Elisabetta Bissaldi, Giselher G. Lichti, Helmut Steinle, Michael Krumrey, Martin Gerlach, Gerald J. Fishman, Charles Meegan, Narayana Bhat,… 展开作者

Andreas von Kienlin, Elisabetta Bissaldi, Giselher G. Lichti, Helmut Steinle, Michael Krumrey, Martin Gerlach, Gerald J. Fishman, Charles Meegan, Narayana Bhat, Michael S. Briggs, Roland Diehl, Valerie Connaughton, Jochen Greiner, R. Marc Kippen, Chryssa Kouveliotou, William Paciesas, Robert Preece, Colleen Wilson-Hodge

摘要:

GLAST爆发监测器将通过2个BGO探测器(150千电子伏至30千电子伏)和12个碘化钠(铊)探测器(10千电子伏至1千电子伏)将大面积望远镜的能量范围(20千电子伏至> 300千电子伏)向较低能量扩展,从而增强GLAST探测宇宙伽马射线暴的能力。GBM仪器对伽玛暴的物理探测器响应是在蒙特卡罗模拟的帮助下确定的,该模拟得到地面校准测量的支持和验证,2005年在MPE对单个探测器进行了广泛的测试。所有飞行和备用探测器都在实验室用校准的放射源(从14千电子伏到4.43兆电子伏)进行了辐照。测量了能量/通道关系、能量分辨率和有效面积对能量和角响应的依赖性。由于低于100 keV的放射源的发射线数量较少,因此在柏林BESSY同步辐射设施与德国联邦物理技术局(PTB)的X射线辐射测量工作组进行了10 keV至60 keV能量范围内的校准测量。

英文摘要:

The GLAST Burst Monitor (GBM) will augment the capabilities of GLAST for the detection of cosmic gamma-ray bursts by extending the energy range (20 MeV to > 300 GeV) of the Large Area Telescope (LAT) towards lower energies by 2 BGO-detectors (150 keV to 30 MeV) and 12 NaI(Tl) detectors (10 keV to 1 MeV). The physical detector response of the GBM instrument for GRBs is determined with the help of Monte Carlo simulations, which are supported and verified by on-ground calibration measurements, performed extensively with the individual detectors at the MPE in 2005. All flight and spare detectors were irradiated with calibrated radioactive sources in the laboratory (from 14 keV to 4.43 MeV). The energy/channel-relations, the dependences of energy resolution and effective areas on the energy and the angular responses were measured. Due to the low number of emission lines of radioactive sources below 100 keV, calibration measurements in the energy range from 10 keV to 60 keV were performed with the X-ray radiometry working group of the Physikalisch-Technische Bundesanstalt (PTB) at the BESSY synchrotron radiation facility, Berlin.

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