Sizing a Niobium-Titanium High-Field Solenoid: Conductor Length, Stored Energy and Cold Mass for a Ten-Tesla-Class Laboratory Magnet

This paper presents a computed design for a NbTi solenoid intended for superconducting magnet engineering, with its performance, resource budgets and margins derived from stated assumptions rather than asserted. The headline results are: central bore field at the design point of 9.45 T; operating current of 189 A; total conductor length of 4.5 km; stored magnetic energy of 131 kJ; magnet inductance of 7.29 H. Each figure was produced by the deposited computation from the inputs listed in the Methods, and the sensitivity of the conclusions to those inputs is examined in the Discussion. The design is a paper study: it is labelled, on its face and in this abstract, SIMULATED, NOT MEASURED, and no quantity reported here is a measurement of built hardware.