{
  "annotation_id": "2f17fd5f-fa28-4a51-945b-f05068166628",
  "date_created": "2026-03-02T18:00:57.322000Z",
  "date_modified": "2026-03-02T18:00:57.322000Z",
  "file_hash": "65d94792c918564672277c45f545e59c5e43ab0496e0c34a8137b00ebeac10d5",
  "private": false,
  "record": {
    "abstract": "A major advance in accurate electron beam polarization measurement has been\nachieved at Jlab Hall A with a Compton polarimeter based on a Fabry-Perot\ncavity photon beam amplifier. At an electron energy of 4.6 GeV and a beam\ncurrent of 40 uA, a total relative uncertainty of 1.5% is typically achieved\nwithin 40 min of data taking. Under the same conditions monitoring of the\npolarization is accurate at a level of 1%. These unprecedented results make\nCompton polarimetry an essential tool for modern parity-violation experiments,\nwhich require very accurate electron beam polarization measurements.",
    "arxiv_id": "physics/0504195",
    "authors": [
      "S. Escoffier",
      "P. Y. Bertin",
      "M. Brossard",
      "E. Burtin",
      "C. Cavata",
      "N. Colombel",
      "C. W. de Jager",
      "A. Delbart",
      "D. Lhuillier",
      "F. Marie",
      "J. Mitchell",
      "D. Neyret",
      "T. Pussieux"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1016/j.nima.2005.05.067",
    "journal_ref": "Nucl.Instrum.Meth.A551:563-574,2005",
    "title": "Accurate measurement of the electron beam polarization in JLab Hall A   using Compton polarimetry",
    "url": "https://arxiv.org/abs/physics/0504195"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "df7e0ffd-90e8-4d99-a78e-b6535475763d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}