Design Blueprint: A Superconducting Cryogenic Heat Switch: On-State Conductance, Off-State Isolation and Switching Energy

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24147857): This paper presents a computed design for a cryogenic heat switch intended for cryogenic thermal control, with its performance, resource budgets and margins derived from stated assumptions rather than asserted. The headline results are: on-state thermal conductance at 0.3 K of 1.63 mW per K; off-state thermal conductance at 0.3 K of 0.036 microwatt per K; ratio of on-state to off-state conductance 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.