MICE Target Modelling. Ben Shepherd February 2011. 2D Modelling. A 2d axisymmetric model takes seconds to run (compared to hours for a 3d model) Limitations: PMs modelled as rings (not 8 wedges) Can’t introduce an offset. 3D and 2D models. Results – 2D model.
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MICE Target Modelling
y is the distance between bottom edge of PM and bottom edge of coils
Force evaluated at r = 8mm, 0.5mm away from PM outer edge
Maximum force: 52.0N at y=9mm
PM outer radius: 7.5mm
PM outer radius: 8.6mm
15mm diameter 16mm diameter: 22% increase (52.0N 63.5N)
PS claims a 6% increase in mass (here, page 14) but I’m not sure of the derivation
Coil outer radius: 15mm
Coil outer radius: 25mm
We see a ‘saturation’ effect at large radii
Force is increased by 18% at r = 25mm (relative to 15mm)