Selection of Stainless Steel for the Fermilab Energy Doubler Saver Magnets

Design of High Field Solenoids made of High Temperature Superconductors

“…In conclusion, this analytical model shows that the maximum value of the stress (σ θθ = 365 MPa) is low compared to the value that the superconductor can withstand before showing degradation of its electrical properties, which is given [54] as about 700 MPa; and also the tension stress reached in the stainless steel skin, σ θθ = 176 MPa, is well below the yield limit of 922 MPa of the AISI 316 LN at 4.2 K [57].…”

“…According to this model the maximum hoop stress reaches 370 MPa in the coil, which is far from the maximum tension before electrical degradation of the tape, known to be as high as 700 MPa[59]. In the skin the maximum hoop stress reaches 176 MPa which is below the yield stress of AISI 316 LN steel, which is expected to be as high as 922 MPa at 4.2 K[57].…”