Towards a shimming plan for collaring of GE02
- Slides: 8
Towards a shimming plan for collaring of GE-02 & GE-03 José Luis Rudeiros Fernández (TE-MSC-LMF)* Dariusz Pulikowski (TE-MSC-LMF) Frédéric Savary (TE-MSC-LMF) logo area 11 T Dipole Task Force Meeting #28
Contents 1. Azimuthal size 2. Shimming plan variations 3. Proof of concept – Graded shimming logo area J. L. Rudeiros Fernández et al. 2
1. Azimuthal size & Average quadrant excess Coil quadrant excess 0. 300 Quadrant excess (mm) 0. 250 GE 03 Left GE 03 Right GE 02 Left GE 02 Right 0. 200 0. 150 0. 100 0. 050 0. 000 -0. 050 -0. 100 0 logo area 1000 2000 3000 4000 Straight coil section (mm) 5000 J. L. Rudeiros Fernández et al. 3
2. Shimming plan variations Coil quadrant excess Average quadrant excess (mm) 0. 350 0. 300 0. 250 0. 200 0. 150 0. 100 0. 050 GE 03&GE 02_Right GE 03&GE 02_Left GE 03&GE 02_Modified Right 0. 05 Graded (OR 60. 8) GE 03&GE 02_Modified Left 0. 05 Graded (OR 60. 8) 0. 000 0 1000 logo area 2000 3000 Straight coil section (mm) 4000 5000 J. L. Rudeiros Fernández et al. 4
2. Shimming plan variations Single (0. 05 Resolution) Graded 0. 05 mm Graded 0. 025 mm Left Right Number of interfaces 0 0 14 14 25 24 Amount of shim thickness variants 1 1 5 4 9 8 Maximal shim thickness (mm) Minimal shim thickness (mm) 0. 2 0. 15 0. 4 0. 2 0. 35 0. 15 0. 425 0. 225 0. 375 0. 15 Maximal modified excess (mm) 0. 251 0. 282 0. 299 0. 300 0. 299 Minimal modified excess (mm) 0. 066 0. 054 0. 251 0. 250 0. 276 0. 275 Modified excess SD (mm) 0. 048 0. 065 0. 014 0. 007 Modified excess spread (mm) 0. 185 0. 227 0. 048 0. 050 0. 024 Average spread (mm) 0. 206 Minimal margin from 0. 3 target (mm) 0. 15 logo area -0. 049 -0. 018 0. 1 -0. 001 0. 05 0. 024 0. 000 0. 1 -0. 001 -5 E-06 0. 15 J. L. Rudeiros Fernández et al. 5
Inner side 0. 05 30° 0. 1 Outer side 0. 15 Inner side logo area Additional Graded Shim Left 0. 15 0. 1 0. 05 0. 15 0. 2 0. 15 0. 1 Outer side Additional Graded Shim Right 0. 15 0. 2 0. 15 0. 1 0. 05 0. 15 0. 2 0. 15 2. Shimming plan variations J. L. Rudeiros Fernández et al. 6
3. Proof of concept – Graded shimming Collaring Mock-up • • 4 coil segments, and calculate three different • shimming plans aiming at an excess of 300 um: • Constant shims. • Graded shims with one transition of 50 um. • Graded shims with one transition of 25 • um resolution. Fuji paper will be placed at: • Mid-plane. • Between the lateral shim and the loading plate. • Between the coil and the loading plate: in order to check the actual effect of stress at the coil, it is proposed to detach the loading plate from the coil and place Fuji paper in between. This could be compared with the previous Fuji. logo area Cable Press B 180 Pressure on same layers of shim and Kapton as in the collaring mock-up experiment: • Constant shims. • Graded shims with one transition of 50 um. • Graded shims with one transition of 25 um resolution. Fuji paper will be placed at: • Top. • Between the lateral shim and the loading plate. • Under Loading plate. J. L. Rudeiros Fernández et al. 7
Thanks! logo area J. L. Rudeiros Fernández 8
