Concept visualization · not a field solution or built hardware
Current evidenceLiterature + analytical modelNo measured ARLO shielding benefit
01
What a magnet changes
The magnetic part of the Lorentz force is q(v × B). It acts perpendicular to particle velocity: a static magnetic field bends a trajectory without directly removing kinetic energy. Neutral particles and photons do not experience this force. Particles traveling parallel to the local field initially experience no magnetic deflection.
02
Energy changes the challenge
For a proton, magnetic rigidity Bρ is momentum divided by charge. A 100 MeV proton has rigidity about 1.483 tesla-metres; a 1 GeV proton about 5.657 tesla-metres. At a uniform transverse field of 1 T, those correspond to curvature radii of 1.483 m and 5.657 m. These are single-particle calculations, not shielding requirements or dose reductions.
03
A field is not a closed wall
Real coils leave a three-dimensional distribution with different directions, gradients and access paths. Some trajectories can be focused toward hardware or occupied volumes. A trajectory that misses one detector may enter elsewhere. Score particles and deposited energy throughout the habitat, not only at a central point.
04
Keep the full momentum boundary
Deflecting external particles transfers momentum to the magnetic system and its supports. This is consistent with momentum conservation. It does not establish an internal-only propulsion mechanism, and a radiation shield is not automatically a useful thruster.
We are defining a research scope for radiation transport, superconducting engineering and optical-material testing. No shield is offered for sale or operational use.