NASA NTRS · 19850040799
The GSFC Advanced Compton Telescope (ACT)
Abstract
A new telescope is being developed at GSFC for the study of point sources of gamma rays in the energy range 1-30 MeV. Using the detection principle of a Compton scatter in a 2.5 cm thick NaI(Tl) detector followed by absorption in a 15 cm thick NaI(Tl) detector, the telescope uses a rocking collimator for field-of-view reduction and background subtraction. Background reduction techniques include lead-plastic scintillator shielding, pulse shape discrimination and Anger camera operation to both NaI detectors, as well as a time-of-flight measurement between them. The instrument configuration and status is described.
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Hartman, R., Fichtel, C., Kniffen, D., Trombka, J., Stacy, G.. 1983-01-01. The GSFC Advanced Compton Telescope (ACT). https://ntrs.nasa.gov/citations/19850040799
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