Design Blueprint: A Network of Dual-Phase Xenon Time Projection Chambers for Dark Matter: Exposure, Background and Cross-Section Reach Computed from Counting Statistics

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24150333): Three dual-phase xenon time projection chambers, each with 7 tonnes of fiducial liquid xenon, are designed as a network and their dark-matter reach is computed from exposure and background counting. One thousand live days give 57.5 tonne-years of exposure; at a stated post-discrimination background of 1.5 events per tonne-year in the search window, 86 background events are expected, and the comput 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.