{
  "annotation_id": "8de27bef-958b-4205-9bb0-da58756661ed",
  "date_created": "2026-03-02T18:00:35.936000Z",
  "date_modified": "2026-03-02T18:00:35.936000Z",
  "file_hash": "7715630a3746de507ac38146ee5948ee35f50ebb8fbb8ebaab02c7b33cf23f1b",
  "private": false,
  "record": {
    "abstract": "The construction and use of a dual radiator Ring Imaging Cerenkov(RICH)\ndetector is described. This instrument was developed for the HERMES experiment\nat DESY which emphasizes measurements of semi-inclusive deep-inelastic\nscattering. It provides particle identification for pions, kaons, and protons\nin the momentum range from 2 to 15 GeV, which is essential to these studies.\nThe instrument uses two radiators, C4F10, a heavy fluorocarbon gas, and a wall\nof silica aerogel tiles. The use of aerogel in a RICH detector has only\nrecently become possible with the development of clear, large homogeneous and\nhydrophobic aerogel. A lightweight mirror was constructed using a newly\nperfected technique to make resin-coated carbon-fiber surfaces of optical\nquality. The photon detector consists of 1934 photomultiplier tubes for each\ndetector half, held in a soft steel matrix to provide shielding against the\nresidual field of the main spectrometer magnet.",
    "arxiv_id": "physics/0104033",
    "authors": [
      "N. Akopov"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1016/S0168-9002(01)00932-9",
    "journal_ref": "Nucl.Instrum.Meth.A479:511-530,2002",
    "title": "The HERMES Dual-Radiator Ring Imaging Cerenkov Detector",
    "url": "https://arxiv.org/abs/physics/0104033"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6994a389-b23c-4a6d-88c2-be5e8081c46b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}