{
  "schema_version": 1,
  "generated_utc": "2026-08-11T12:19:44.440926+00:00",
  "generator": "engines/atom_fishbone_coupler/tools/plot_sin_cavity_full_pipeline.py",
  "campaign": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1",
  "render_contract": {
    "surface": "static PNG assets embedded by MkDocs",
    "matched_geometry_axes": true,
    "units": "micrometres for geometry; nanometres for wavelength",
    "material_palette": {
      "vacuum": "#FFFFFF",
      "SiO2": "#DCEAF5",
      "Si3N4": "#D89B33"
    }
  },
  "figures": [
    {
      "file": "design_evolution.png",
      "question": "How did the 10 \u00d7 3 \u00b5m design region change across the pipeline?",
      "takeaway": "Adjoint topology optimization created the structure; boundary optimization retained a visually similar contour with at most 17.2 nm control motion.",
      "sources": [
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/topology_run/initial_topology.npz",
          "sha256": "e4af4a7e306cc2808999075fb9b76e8d9d3727c4d8263911e2b29d44351511f1"
        },
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/topology_beta16/promoted_topology.npz",
          "sha256": "f33e10a963b3b033b084c49c2d3ee3c786ebb1a074024114b8b1b7bc5e97d9cd"
        },
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/topology_beta16/promoted_handoff/boundary_field.npz",
          "sha256": "0c66b0063896f28587b71f8f58cab175f575ad348878e0da28c171e5adfc4582"
        },
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/vector_q_survival_gradient_v1/extended_candidates/candidate_minus_16nm.json",
          "sha256": "2d3f10a222fec89adf8b3f344d7b84644ad87474d0195a77a181330a44b4bcc3"
        }
      ]
    },
    {
      "file": "boundary_change.png",
      "question": "Where did the retained free-form boundary step change material?",
      "takeaway": "The change is nanometre-scale and distributed; the exact 1 \u00b5m aperture remains untouched.",
      "sources": [
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/vector_q_survival_gradient_v1/candidate_baseline.json",
          "sha256": "ef53cba1edcddb8883f15a087911f751a10e5189d07d919708e42de10e53e1ee"
        },
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/vector_q_survival_gradient_v1/extended_candidates/candidate_minus_16nm.json",
          "sha256": "2d3f10a222fec89adf8b3f344d7b84644ad87474d0195a77a181330a44b4bcc3"
        }
      ]
    },
    {
      "file": "geometry_cross_sections.png",
      "question": "What materials and dimensions define the final retained device?",
      "takeaway": "A 300 nm Si3N4 layer in SiO2 surrounds a protected 1 \u00b5m-diameter vertical vacuum aperture and connects to 700 nm guides.",
      "sources": [
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/vector_q_survival_gradient_v1/extended_candidates/candidate_minus_16nm.json",
          "sha256": "2d3f10a222fec89adf8b3f344d7b84644ad87474d0195a77a181330a44b4bcc3"
        }
      ]
    },
    {
      "file": "cavity_mode_field.png",
      "question": "Where is the resonance supported relative to the movable dielectric?",
      "takeaway": "The resonant magnetic field is concentrated in the protected aperture, explaining why free-form dielectric motion has weak Q leverage.",
      "sources": [
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/vector_q_apodized_spectrum_v1/simulation_data/fdve-3b08410e-cccd-4d2c-a3bd-6fb53581b1b4.hdf5",
          "sha256": "7d57cd58bb0c4e524928e97928c6462561dc687e85855bc39c3fc198f9684b18"
        },
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/vector_q_survival_gradient_v1/candidate_baseline.json",
          "sha256": "ef53cba1edcddb8883f15a087911f751a10e5189d07d919708e42de10e53e1ee"
        }
      ],
      "selected_wavelength_nm": 781.3972000000001
    },
    {
      "file": "adjoint_objective_history.png",
      "question": "Did the topology-adjoint objective improve within each continuation stage?",
      "takeaway": "The discovery objective improved strongly overall; the final beta-16 stage rose from 15,321 to 21,842 despite non-monotone Adam steps.",
      "sources": [
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/topology_run/result_summary.json",
          "sha256": "c5abafc720b09b696f4d8101af6a304cda91d14717fd7c5be0c90603dcbc40e6"
        },
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/topology_beta8/promotion_summary.json",
          "sha256": "48d0f7f921bd31bafc8f4f6b12a9b8f85ec62c56255f8dcf7f5bc0a572b45158"
        },
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/topology_beta16/promotion_summary.json",
          "sha256": "22915e529f135be80351a10730e1b67976a7de408ff9f9b7cde138d198ec3dc3"
        }
      ]
    },
    {
      "file": "resonance_spectrum.png",
      "question": "Which spectral observable is aligned with the fitted cavity pole?",
      "takeaway": "Magnetic energy peaks at the fitted pole with a 58.8\u00d7 edge ratio; the U/P proxy peaks 0.575 nm away and is invalid for this mode.",
      "sources": [
        {
          "path": "engines/atom_fishbone_coupler/campaigns/sin_cavity_full_pipeline_v1/vector_q_apodized_spectrum_v1/result_summary.json",
          "sha256": "567f39a0af3cc8e7b3b9dd6e95d12313549774a67f07fdf9d91434e8c8e4c00c"
        }
      ]
    }
  ]
}