{
  "annotation_id": "13d53db6-b9e9-4467-90b0-0674c0540574",
  "date_created": "2026-03-02T18:01:24.103000Z",
  "date_modified": "2026-03-02T18:01:24.103000Z",
  "file_hash": "9a11fc601c0548d787193d254f2fb1c73d7d98ee92b24a031ef3ecdab25169ff",
  "private": false,
  "record": {
    "abstract": "The electron optics of a 90 degree spherical deflecting analyzer (SDA-90) is\ninvestigated with an imaging matrix formalism. As a preanalyzer in the\nUTA-neutrino experiment, high transmission and reasonable energy resolution are\nthe choices of optimization. The magnification of the source through the\nanalyzer plays the key role in determining the energy resolution. The imaging\nmatrix approach provides graphical information to facilitate such an\nevaluation. We can demonstrate that in case where the analyzer is\nasymmetrically charged, the rotation of the image helps increase both\ntransmission probability and resolution. A telefocus electron gun is used to\ncheck the numerical result, and to investigate the transverse focusing\nbehavior.",
    "arxiv_id": "physics/9905032",
    "authors": [
      "Chong-Yu Ruan",
      "Scott Nguyen",
      "Manfred Fink"
    ],
    "categories": [
      "physics.optics",
      "physics.ins-det"
    ],
    "title": "Investigation of a 90 Degree Spherical Deflecting Analyzer Operated in   an Asymmetrically Charged Configuration",
    "url": "https://arxiv.org/abs/physics/9905032"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "cff9f0d0-627e-4514-a628-497dfaab12d1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}