{
  "annotation_id": "c50b944c-9948-4a7a-9f47-163223739546",
  "date_created": "2026-03-02T18:00:36.376000Z",
  "date_modified": "2026-03-02T18:00:36.376000Z",
  "file_hash": "ba8a9221b084efc437eee9b829f749145d7e59cf75679c7178a4e92d0da6b0ea",
  "private": false,
  "record": {
    "abstract": "Results from the Modified Three Gradient Method (MTGM), applied to a pulsed\nhigh intensity electron source, are presented. The MTGM makes possible the\nnon-destructive determination of beam emittance in the space charge presence\n[1]. We apply the MTGM to an experimental system equipped with a Pierce\nconvergent diode, working in pulse mode, and having a directly heated cathode\nas electron source. This choice was mainly motivated by the availability of an\nanalytical characterization of this source type [2], as well as the extended\nuse of the Pierce type sources in linear accelerators. The experimental data\nare processed with a numerical matching program, based on the K-V equation for\nan axially symmetric configuration [3], to determine the emittance and object\ncross-over position and diameter. The variation of these parameters is further\ninvestigated with respect to both electrical and constructive characteristics\nof the source: cathode heating current, extraction voltage, and cathode-anode\ndistance.",
    "arxiv_id": "physics/0111099",
    "authors": [
      "S. Marghitu",
      "C. Oproiu",
      "C. Dinca",
      "O. Marghitu"
    ],
    "categories": [
      "physics.acc-ph",
      "physics.ins-det"
    ],
    "title": "Pulsed electron source characterization with the modified three gradient   method",
    "url": "https://arxiv.org/abs/physics/0111099"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "caf30208-e3e7-4620-8e1b-c398454d186d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}