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Meshed with no iron for comparison Used Willy’s conceptual design for iron pieces

Outline. Meshed with no iron for comparison Used Willy’s conceptual design for iron pieces Not optimized in any way Used thin and thick pieces Compared fields (BMOD and BR) Compared tracks for no iron and thick iron Note: op3 file names are:

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Meshed with no iron for comparison Used Willy’s conceptual design for iron pieces

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  1. Outline • Meshed with no iron for comparison • Used Willy’s conceptual design for iron pieces • Not optimized in any way • Used thin and thick pieces • Compared fields (BMOD and BR) • Compared tracks for no iron and thick iron • Note: op3 file names are: • no_iron_in_coils_test_ver2.op3 (smaller mesh size) • iron_in_coils_ver3.op3 (thin) • iron_in_coils_ver4.op3 (thick)

  2. No iron, coils only BMOD z=1375 cm

  3. No iron w/ mesh BMOD z=1375 cm

  4. Field on a line, middle of open sector BMOD z=1375 cm, y= 0 cm , 0 < x < -40 cm BMOD With coils only With mesh

  5. Model body in mesh

  6. Iron design thick iron thin iron

  7. Iron design 1 m long, section of tube from 0.5 to 5.5 cm radius Opening angle, thin: 5 degrees Opening angle, thick: 20 degrees Placed radially from 5 – 20 cm between 1325 and 1425 cm in z thick iron

  8. Thin Iron w/ mesh BMOD z=1375 cm

  9. Thick Iron w/ mesh BMOD z=1375 cm

  10. Giant blocks of iron BMOD z=1375 cm

  11. No iron w/ mesh BMOD z=1375 cm

  12. Thin Iron w/ mesh BMOD z=1375 cm

  13. Thick Iron w/ mesh BMOD z=1375 cm

  14. Giant blocks of iron BMOD z=1375 cm

  15. Vector plots BMOD

  16. Middle of open sector With thin iron BMOD With no iron

  17. Middle of open sector With thin iron BMOD With thick iron With no iron

  18. Edge of open sector With thin iron BMOD With no iron

  19. Edge of open sector With thin iron BMOD With thick iron With no iron

  20. BMOD Center of open sector With thin iron Z=1375, r = 13.5 cm With no iron

  21. BR With thin iron Z=1375, r = 13.5 cm With no iron

  22. BMOD With thin iron Z=1375, r = 13.5 cm With thick iron

  23. BR With thin iron Z=1375, r = 13.5 cm With thick iron

  24. BMOD With no iron Z=1375, r = 16.0 cm With thick iron

  25. BMOD With “giant” iron Z=1375, r = 16.0 cm With thick iron

  26. With no iron With thick iron

  27. With no iron With giant iron

  28. With no iron With giant iron, BFIL 90%

  29. With no iron With giant iron, BFIL 80%

  30. Summary No optimization of the iron was done According to this preliminary work, is 2% greater for the thick iron 1.11 T∙m → 1.13T ∙ m Lowest tracks radial position at detector plane increased 2 cm (compared to 90 cm) Do NOT see a dramatic increase in the quality of the focus or size of the field Radial focus may be a little better for transition and closed sectors

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