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Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
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In electrostatics, the electric field can be written as the negative gradient of the potential. In magnetostatics, the zero divergence of the magnetic field ensures that the magnetic field can be expressed as the curl of a vector potential. This potential is known as the magnetic vector potential.
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In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
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Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
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The MAGnetometers for Innovation and Capability (MAGIC) Technology Demonstration Payload.

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Summary
This summary is machine-generated.

The MAGnetometers for Innovation and Capability (MAGIC) instruments will flight-demonstrate new low-noise fluxgate magnetometer cores for spaceflight applications. This technology aims to replace legacy cores and validate new designs, including the Tesseract, on the TRACERS mission.

Keywords:
FluxgateHeliophysicsMAGICMagnetometerNASATRACERS

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Area of Science:

  • Space Physics
  • Instrument Technology
  • Magnetometry

Background:

  • The supply of legacy Infinetics S1000 fluxgate magnetometer cores is diminishing, impacting future spaceflight missions.
  • New fluxgate magnetometer cores are needed to ensure continued in-situ magnetic field measurements in space.

Purpose of the Study:

  • To flight-demonstrate novel low-noise fluxgate magnetometer cores developed at the University of Iowa.
  • To validate the performance of new fluxgate core designs against existing technologies in a space environment.

Main Methods:

  • The MAGnetometers for Innovation and Capability (MAGIC) instruments were integrated onto the Tandem Reconnection And Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission.
  • Two distinct sensor designs were flown: one with a backward-compatible 1" ring-core and another featuring a novel Tesseract race-track geometry core.
  • Technology demonstration magnetometers were mounted alongside science magnetometers for direct in-flight comparison and validation.

Main Results:

  • The MAGIC instruments successfully flight-demonstrated new fluxgate magnetometer core technologies.
  • In-flight validation of the new cores was performed by direct comparison with TRACERS science magnetometers.
  • The Tesseract sensor design, utilizing race-track geometry cores, was introduced and tested.

Conclusions:

  • The new low-noise fluxgate magnetometer cores are suitable for spaceflight applications.
  • The MAGIC instruments provide a viable path for replacing legacy magnetometer cores.
  • The TRACERS mission successfully validated advanced magnetometry technology for future space exploration.