Title :
Calibration of the Egret High-Energy Gamma-Ray Telescope in the Range 20-10,000 MeV with a Tunable Beam of Quasi-Monoenergetic Gamma Rays at SLAC
Author :
Thompson, D.J. ; Bertsch, D.L. ; Favale, A. ; Fichtel, C.E. ; Hartman, R.C. ; Hofstadter, R. ; Hughes, E.B. ; Hunter, S.D. ; Hughlock, B.W. ; Kanbach, G.O. ; Kniffen, D.A. ; Lin, Y.C. ; Mattox, J.R. ; Mayer-Hasselwander, H. ; Nolan, P.L. ; Pinkau, K. ; Ro
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, Maryland 20771
Abstract :
The EGRET telescope, one of the instruments to be carried on NASA´s Gamma Ray Observatory, is designed to explore the high-energy portion (20 - 24,000 MeV) of the electromagnetic spectrum. A calibration source of ¿-rays over this wide energy range has been used at SLAC, together with an appropriate set of intensity-monitoring instruments, to conduct a calibration of the EGRET telescope over this energy range for the full telescope aperture. The calibration method and an overview of the results are described.
Keywords :
Apertures; Calibration; Electromagnetic spectrum; Gamma rays; Instruments; Laser beams; Observatories; Physics; Telescopes; Tiles;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1987.4337297
