{
  "annotation_id": "3950d9fb-38fd-4a95-85f7-ee532a64c1a2",
  "date_created": "2026-03-02T18:01:20.859000Z",
  "date_modified": "2026-03-02T18:01:20.859000Z",
  "file_hash": "34abb1f0c4f77f298c41d06b8a8fc58c745e1f4c6852f35dc68272ae6df93dd9",
  "private": false,
  "record": {
    "abstract": "A prototype of a novel superconductive undulator with a period length of 3.8\nmm is described. The undulator is 100 periods long. In the first tests\ndescribed in this paper the undulator was cooled in a helium bath and it was\nshown that it can be operated as expected with a maximum current of 1400 A.\nAfterwards the undulator field was measured with a miniature Hall probe with an\nactive area of (100x100)x10^-6 m^2. Calculated and measured field distributions\nare in good agreement. A cryostat for a beam test at Mainz microtron MAMI was\nbuilt in which liquid helium cools indirectly the in-vacuum undulator. At the\nmoment the cryostat is tested and optimized.",
    "arxiv_id": "physics/9806049",
    "authors": [
      "M. Fritz",
      "T. Hezel",
      "M. Homscheidt",
      "H. O. Moser",
      "R. Rossmanith",
      "Th. Schneider",
      "H. Backe",
      "S. Dambach",
      "F. Hagenbuck",
      "K. -H. Kaiser",
      "W. Lauth",
      "A. Steinhof",
      "Th. Walcher"
    ],
    "categories": [
      "physics.acc-ph"
    ],
    "title": "First experiments with a 100 period superconductive undulator with a   period length of 3.8 mm",
    "url": "https://arxiv.org/abs/physics/9806049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6fbeee33-44a3-48c0-a9c2-21191308ada4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}