{
  "annotation_id": "740703a7-04d4-48e9-894b-a38323e71faa",
  "date_created": "2026-03-02T18:00:42.405000Z",
  "date_modified": "2026-03-02T18:00:42.405000Z",
  "file_hash": "c16a0b987acbbfc449f3b08ea86459c267c6232548b0fda2284ff6f9539da71a",
  "private": false,
  "record": {
    "abstract": "In 1998, the detector H1 at HERA has been equipped with a small backward\nspectrometer, the Very Low Q^2 (VLQ) spectrometer comprising a silicon tracker,\na tungsten - scintillator sandwich calorimeter, and a Time-of-Flight system.\nThe spectrometer was designed to measure electrons scattered under very low\nangles, equivalent to very low squared four - momentum transfers Q^2, and high\nenergy photons with good energy and spatial resolution. The VLQ was in\noperation during the 1999 and 2000 run periods. This paper describes the design\nand construction of the VLQ calorimeter, a compact device with a fourfold\nprojective energy read-out, and its performance during test runs and in the\nexperiment.",
    "arxiv_id": "physics/0305070",
    "authors": [
      "A. Stellberger",
      "K. Meier",
      "O. Niedermaier",
      "O. Nix",
      "K. Schmitt",
      "J. Stiewe",
      "M. Weber",
      "J. Ferencei",
      "F. Krivan",
      "J. Spalek"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1016/j.nima.2003.08.111",
    "journal_ref": "Nucl.Instrum.Meth.A515:543-562,2003",
    "title": "The VLQ Calorimeter of H1 at HERA: A Highly Compact Device for   Measurements of Electrons and Photons under Very Small Scattering Angles",
    "url": "https://arxiv.org/abs/physics/0305070"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1ffcb367-e940-4760-9fcd-9b9fcf64db6b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}