Design Blueprint: A Three-Class Imaging Atmospheric Cherenkov Array: Threshold, Effective Area and Sensitivity Computed from Photon Statistics

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24150250): A computed design is presented for a ground-based gamma-ray observatory of 99 imaging atmospheric Cherenkov telescopes in three size classes. Energy thresholds follow from the fluctuation of night-sky background light inside one camera pixel during the trigger gate, scaled by mirror area and pixel size: 25 GeV for the four 23 m telescopes, 86 GeV for the twenty-five 12 m telescopes and 334 GeV for 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.