{
  "annotation_id": "bb92237c-d57b-4c1c-95e0-e1b8ef7b98dc",
  "date_created": "2026-03-02T18:00:53.681000Z",
  "date_modified": "2026-03-02T18:00:53.681000Z",
  "file_hash": "b221031fa27d5fe970bccec8736b025811abec79ebf4069337cbf4fefadd753c",
  "private": false,
  "record": {
    "abstract": "Since the summer of 2003, a large Micromegas TPC prototype (1000 channels, 50\ncm drift, 50 cm diameter) has been operated in a 2T superconducting magnet at\nSaclay. A description of this apparatus and first results from cosmic ray tests\nare presented. Additional measurements using simpler detectors with a laser\nsource, an X-ray gun and radio-active sources are discussed. Drift velocity and\ngain measurements, electron attachment and aging studies for a Micromegas TPC\nare presented. In particular, using simulations and measurements, it is shown\nthat an $Argon-CF_4$ mixture is optimal for operation at a future Linear\nCollider.",
    "arxiv_id": "physics/0412062",
    "authors": [
      "P. Colas",
      "I. Giomataris",
      "V. Lepeltier",
      "M. Ronan"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1016/j.nima.2004.07.123",
    "journal_ref": "Nucl.Instrum.Meth.A535:181-185,2004",
    "title": "First tests of a Micromegas TPC in a magnetic field",
    "url": "https://arxiv.org/abs/physics/0412062"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "25e9f4b2-cc22-415c-87aa-5fa0bcbc1ed1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}