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The Galileo Energetic Particles Detector


Galileo EPD Handbook


Chapter 1. Instrument Summary


Charged Particle Response of Magnetic Deflection System for Galileo Jupiter Orbiter (draft) (continued)




We have modeled the structure of the Galileo LEMMS sensor using three detectors, open apertures, and surrounding polygons. The analytic expression of the magnetic field inside the sensor is important for accurate calculation of the particles' trajectories. With this expression, we have obtained the magnetic field model by the superposition of divided magnets. By using this magnetic field, the separation of protons from electrons and of high energy electrons from low energy electrons has been achieved. To obtain the number of electrons and protons counted by their detectors, we have used the cross product method to determine whether the particles collide with the interiors of the sensor or go into the detectors. The mapping of angular distributions offers a demonstration of the symmetric properties of the system. Finally, the geometric factors of the detectors for different energies are calculated.





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Updated 8/23/19, Cameron Crane


Manufacturer: The Galileo Spacecraft was manufactured by the Jet Propulsion Laboratory, Messerschmitt-Bölkow-Blohm, General Electric, and the Hughes Aircraft Company.

Mission Duration: Galileo was planned to have a mission duration of around 8 years, but was kept in operation for 13 years, 11 months, and 3 days, until it was destroyed in a controlled impact with Jupiter on September 21, 2003.

Destination: Galileo's destination was Jupiter and its moons, which it orbitted for 7 years, 9 months, and 13 days.