Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975itns...22..587a&link_type=abstract
(IEEE, AEC, NASA, and NBS, Nuclear Science Symposium, 21st, Scintillation and Semiconductor Counter Symposium, 14th, and Nuclear
Astronomy and Astrophysics
Astronomy
Cerenkov Counters, Satellite-Borne Instruments, Scintillation Counters, Signal Processing, Time Signals, X Ray Astronomy, Analog Circuits, Circuit Reliability, Coincidence Circuits, Cos-B Satellite, Gamma Rays, Integrated Circuits, Spaceborne Astronomy, Spacecraft Electronic Equipment, Thermal Stability, Weight Reduction
Scientific paper
Fast coincidence and analog electronics have been developed to process signals from the scintillation and Cerenkov detectors of the triggering telescope, which forms part of the COS-B experiment for gamma ray astronomy. Design requirements and solutions for the electronics are presented, and the performance is discussed. Integrated circuits have been used extensively in order to minimize the number of components, hence volume and weight, and to optimize the reliability. The goals of a time resolution down to 3 nsec for a dynamic range of 1 to 30, a signal processing time of 200 nsec for timing and 500 nsec for analog analysis, a maximum temperature instability of the trigger thresholds of 2% of the typical signal amplitude over a range of 50 deg C and a maximum nonlinearity of 1% of full scale for the pulse height analysis have been achieved.
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