Design and performance of an Automatic Gain Control system for the High Energy X-Ray Timing Experiment

Details Design and performance of an Automatic Gain Control system for the High Energy X-Ray Timing Experiment Design and performance of an Automatic Gain Control system for the High Energy X-Ray Timing Experiment

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1549..134p&link_type=abstract

In: EUV, X-ray, and gamma-ray instrumentation for astronomy II; Proceedings of the Meeting, San Diego, CA, July 24-26, 1991 (A93

Computer Science

Performance

2

Automatic Gain Control, Computer Aided Design, High Energy Interactions, Performance Tests, Scintillation Counters, X Ray Timing Explorer, Feedback Control, Gamma Ray Observatory, Gamma Ray Spectrometers, Solar Maximum Mission

Scientific paper

The High Energy X-Ray Timing Experiment (HEXTE), currently under development for the X-Ray Timing Explorer (XTE) mission, employs a closed loop gain control system to attain 0.5 percent stabilization of each of eight-phoswich detector gains. This Automatic Gain Control (AGC) system utilizes a split window discriminator scheme to control the response of each detector pulse height analyzer to gated Am-241 X-ray events at 60 keV. A prototype AGC system has been implemented and tested within the gain perturbation environment expected to be experienced by the HEXTE instrument in flight. The AGC system and test configuration are described. Response, stability and noise characteristics are measured and compared with theoretical predictions. The system is found to be generally suitable for the HEXTE application.

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