A multitude of devices is required to accelerate charged particles on a closed orbit of a synchrotron ring. A beam pipe separates the vacuumized particle beam trajectory from all other equipment in the tunnel and consists classically of conducting material. Bending magnets apply a strong Lorentz force on the particles which must rise proportionally to the particles’ energy. According to Lenz’ law, unwanted eddy currents are induced in the beam pipe in order to resist the change of magnetic flux density.

This work aims to quantify this disadvantageous effect of beam pipes on the field quality of bending magnets.