{
  "annotation_id": "84683d9d-3adf-4d9b-b240-2df182f42aba",
  "date_created": "2026-03-02T18:00:36.443000Z",
  "date_modified": "2026-03-02T18:00:36.443000Z",
  "file_hash": "f94563051a9d57241a4f384ef6b97d15cf61cb9a7582be0554288c10c8a33b23",
  "private": false,
  "record": {
    "abstract": "The original LIGO suspension control system [1] used analog circuitry to\nimplement the closed loop damping required for local control of each the\nsuspended optics. Recent developments in analog to digital converters (ADC),\ndigital to analog converters (DAC), increased processor speed and performance,\nand the use of reflective memory have made a digital alternative possible. Such\na control system would provide additional performance and flexibility that will\nbe required for operation of the interferometers. This paper will describe the\nreal-time digital servo control systems that have been designed, developed and\nimplemented for the LIGO suspended optics. In addition, the paper will describe\nhow the suspension controls have been integrated into the overall LIGO control\nand data acquisition systems [2].",
    "arxiv_id": "physics/0110071",
    "authors": [
      "J. Heefner",
      "R. Bork"
    ],
    "categories": [
      "physics.optics",
      "physics.gen-ph"
    ],
    "journal_ref": "eConf C011127 (2001) WEAP059",
    "title": "The LIGO Suspended Optic Digital Control System",
    "url": "https://arxiv.org/abs/physics/0110071"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "70c05b74-4b68-480e-a5b0-5feb5cbc84bd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}