Computer Science – Performance
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989itns...36..871b&link_type=abstract
(IEEE, DOE, NIST, et al., 1988 Nuclear Science Symposium, Orlando, FL, Nov. 9-11, 1988) IEEE Transactions on Nuclear Science (IS
Computer Science
Performance
7
Balloon-Borne Instruments, Performance Tests, Systems Integration, X Ray Imagery, X Ray Telescopes, Calibrating, Position Sensing, Scintillation Counters, Sodium Iodides, Thallium
Scientific paper
The final integration and testing of the Energetic X-ray Imaging Telescope Experiment (EXITE) are described. The detector and telescope as finally assembled are described, and problems as well as solutions are detailed. The preflight calibration of the position-sensitive NaI detector revealed unanticipated effects in the energy spectra. In particular, an effect due to surface roughness (lack of firm optical polishing) on the crystal was found and calibrated. The radial variation of gain and resolution in the detector was also measured, and so-called flat fielding methods have been derived to analyze the data. The integration of the EXITE detector and gondola systems is described. Several novel features were developed for the EXITE gondola, most notably a shock absorber system. The performance of the detector and gondola systems was evaluated on a first balloon flight from Australia (May 1988) and a second flight from Ft. Sumner, New Mexico (October 1988).
Braga Joao
Covault Corbin E.
Grindlay Jonathan E.
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