1. CERN Accelerator School, Erice 2013 Tiepida-2 case-study 3: High field – large aperture magnet for a cable facility TiEpIdA2 design team: I. Mondino: Project Management A. Kario: Project Management T. Zickler: Project Management S. Kar: Project Management R. Pasquet: Magnet Design A. Dallocchio: Industrial Intelligence Service E. Todesco: Template Supplier

2. CERN Accelerator School, Erice 2013 Main Goal Design a superconducting dipole Aperture: 100mm Central field: 15T ( @ 90% I ss ) Nb3Sn cables @ 1.9 K Magnet for cable test facility: One of a kind magnet… No strong cost optimization required Good safety margin wrt working condition… Possible future upgrade

3. CERN Accelerator School, Erice 2013 The importance of the intelligence service… PIT Nb3Sn, 40 strands cable, 1mm filament: Degradation after cable reaction < 5% w t

4. CERN Accelerator School, Erice 2013 Superconducting cable Data courtesy: Intelligence Service…

5. CERN Accelerator School, Erice 2013 Preliminary Coil dimensioning Coil Width: 83,6mm 4 Layers coil in agreement with cable dimensions Main Coil Parameters: Cu/SC Ratio: 1.2 Filling Factor K: 0.318 Ins. Cable Area: 45mm 2 17,6 T

6. Load Line Load Curve

7. Short sample and operating condition “Short sample” conditions j SC_ss = 955 A/mm 2 j O_ss = 303 A/mm 2 I ss = 13630 A B ss_peak = 17.3 T B ss = 16.8 T Operation conditions at 90% of I ss j SC_op = 855 A/mm 2 j O_op = 272 A/mm 2 I op = 12213 A B op_peak = 15.5 T B op = 15.1 T

8. CERN Accelerator School, Erice 2013 Coil Lay-out 1/2 TIEPIDA-2 100mm Aperture 4Layers, 6 sectors, 60 deg, (cos ϑ design) Nb3Sn @1.9 K No (pushed) field optimization for this application…

9. CERN Accelerator School, Erice 2013 Coil Lay-out 2/2 TIEPIDA2: Open collars Bladers with open iron yoke Shrinking cylinder in aluminum Lorentz forces: F x =9.9MN/m F y =-8.1MN/m Average normal stress: σ=-128 MPa

10. CERN Accelerator School, Erice 2013 Iron Yoke Iron yoke dimension: t iron =375mm Collar dimension: t collar =30 mm Shrinking cylinder: t shrinking cylinder = 83mm Overall diameter: d=1250mm Length: L=1.5m

11. CERN Accelerator School, Erice 2013 Thanks for your attention! TiEpIdA2 Tricky innovation Encourages people In developing Amenities