CRRES in review: space weather and its effects on technology

Physics

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Scientific paper

The Combined Release and Radiation Effects Satellite (CRRES) was a unique mission which has provided valuable lessons about the space radiation environment and its effects on technological systems in space. The tremendous value of CRRES resides in the fact that it flew not only the technologies to be space-tested, but also an extensive suite of instruments to accurately specify the damage-causing radiation environment. CRRES was launched into a geosynchronous transfer orbit on July 25, 1990, 1yr following the maximum of solar cycle 22, and returned data for approximately 14 months. It was first exposed to 8 months of a relatively quiet magnetosphere, followed by a very active 6 month interval initiated by the much documented March 1991 storm. This large magnetic storm, accompanied by a solar proton event, was responsible for creating a temporary proton and electron belt within the typically benign slot region. The dynamic radiation environment was responsible for a number of observable total dose effects, charging/discharging phenomena, single event effects, and assorted anomalies within the spacecraft instrumentation and technology tested. This exceptional combination of technologies, instrumentation, and dynamic radiation environment will be reviewed, with attention given to lessons learned and how CRRES has changed our perspective on magnetospheric radiation hazards.

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