High-Energy Calibration of a BGO detector of the GLAST Burst Monitor

Details High-Energy Calibration of a BGO detector of the GLAST Burst Monitor High-Energy Calibration of a BGO detector of the GLAST Burst Monitor

2007-04-17

arxiv.org/abs/0704.2178v1

AIP Conf.Proc.921:576-577,2007

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure; to appear in the Proc. of the First Int. GLAST Symp. (Stanford, Feb. 5-8, 2007), eds. S.Ritz, P.F.Michelson

Scientific paper

10.1063/1.2757459

The understanding of the instrumental response of the GLAST Burst Monitor BGO detectors at energies above the energy range which is accessible by common laboratory radiation sources (< 4.43 MeV), is important, especially for the later cross-calibration with the LAT response in the overlap region between ~ 20 MeV to 30 MeV. In November 2006 the high-energy calibration of the GBM-BGO spare detector was performed at the small Van-de-Graaff accelerator at SLAC. High-energy gamma-rays from excited 8Be* (14.6 MeV and 17.5 MeV) and 16O* (6.1 MeV) were generated through (p,gamma)-reactions by irradiating a LiF-target. For the calibration at lower energies radioactive sources were used. The results, including spectra, the energy/channel-relation and the dependence of energy resolution are presented.

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