Mariner-Jupiter-Saturn Low Energy Charged Particle Experiment

The Low Energy Charged Particle Experiment shown in Figure 1 will be launched on the Mariner-Jupiter-Saturn spacecraft in August 1977. The experiment has been designed to perform particle measurements in the intense radiation belts of the Jovian and Saturnian environments, and to provide detailed spectral analysis of both solar and galactic particles in interplanetary space. These objectives are met by a single instrument which uses 23 solid-state detectors configured in two distinct detector subsystems. One subsystem is optimized for interplanetary and interstellar measurements. The second subsystem is optimized for specific particle species, energies, and intensities expected near the planets. Angular distributions in the ecliptic plane and pitch angle distributions are obtained using an 8-sector scanning motor.