1 / 9

MICE Target Modelling

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.

alicia
Download Presentation

MICE Target Modelling

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. MICE Target Modelling Ben Shepherd February 2011

  2. 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

  3. 3D and 2D models

  4. Results – 2D model 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

  5. Effect of increasing PM size PM outer radius: 7.5mm PM outer radius: 8.6mm

  6. PM size variation results 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

  7. Effect of increasing coil size Coil outer radius: 15mm Coil outer radius: 25mm

  8. Coil size variation results We see a ‘saturation’ effect at large radii Force is increased by 18% at r = 25mm (relative to 15mm)

  9. Adding steel bobbin • Added steel cylinder (0.3mm thick) to inside of coils • Shunts some of the field produced by the coils • Reduces force by ~33% • (In reality, mild steel used with low µ - so would be OK)

More Related