Design Blueprint: A Kilometre-Baseline Atom-Interferometer Network for the Mid-Frequency Gravitational-Wave Band: Strain Sensitivity Computed from Phase Noise

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24150242): A terrestrial detector network based on atom interferometry is designed for the gravitational-wave band between the reach of ground laser interferometers and space missions. A vertical baseline of 1 km, large-momentum-transfer optics of 1,000 photon recoils (effective wavenumber 8.06e+09 per metre) and a shot-noise phase sensitivity of 1e-4 radians per shot give a computed strain sensitivity of 1. 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.