2. FRESCA2 - Coils 1+2 scenario
E. Rochepault – 11/25/14
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3. 2D models 2D Ansys Magnetic 2D Ansys Mechanical 3-4: Cu Coils
1-2: Sc Coils
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4. Operating point
Chosen to produce the same level of forces in coils 1-2
15.5 kA
10.5 T bore field
12.7 T peak field
85 % SS 4.2 K
80 % SS 1.9 K
Iss4.2
85% Iss4.2 I0
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5. 2D magnetic results Lorentz forces 4 coils: Fx1 = 3.37 MN/m
Fy1 = MN/m
Fx2 = 4.28 MN/m
Fy2 = MN/m
2 coils:
Fx1 = 3.86 MN/m
Fy1 = MN/m
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6. 2D mechanical results Contact pressure  Target: -40 MPa min. pressure
4 coils:
600 μm interference
30 MPa bladder pressure*
2 coils:
750 μm interference
37 MPa bladder pressure*
*Without using yoke bladders
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7. 2D mechanical results Horizontal stress Sx in the coil (excitation)
4 coils:
 Peak stress = 139 MPa
2 coils:
 Peak stress = 118 MPa
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8. 2D mechanical results Horizontal stress Sx in the coil
Max: 60
112
118
Irreversible degradation values (MPa):
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9. Thank you for your attention Any question ?
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10. Backup slides
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11. 2D mechanical results VM stress in the bore tube Yield values [1]:
 Titanium Ti-6Al-4V
345
793
579
Yield values [1]:
[1] H. Felice, LBNL
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12. 2D mechanical results VM stress in the island Yield values [2]:
 Iron, material to be checked (Armco, AISI 1010…?)
203
613
296
Yield values [2]:
[2] Matweb, AISI 1010 Cold drawn
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13. 2D mechanical results VM stress in the horizontal pad
 Stainless steel 316 LN
112
240
305
Yield values [1]:
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14. 2D mechanical results VM stress in the yoke Yield values [3]:
 Magnetil
208
312
369
Yield values [3]:
[3] Production of Low-Carbon Magnetic Steel for the LHC Superconducting Dipole and Quadrupole Magnets, F. Bertinelli et al., IEEE, 2006
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15. 2D mechanical results VM stress in the shell Yield values [1]:
 Aluminum AL 7075 85
209
212
Yield values [1]:
5/12/2019
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