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

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24147712): 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 inductanc Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.