{
  "annotation_id": "30819d9d-9592-4afc-8929-dd665466b822",
  "date_created": "2026-03-02T18:01:07.657000Z",
  "date_modified": "2026-03-02T18:01:07.657000Z",
  "file_hash": "5a0d8956df281cef86b2037eff17f8d28f1fe1a28e34158edf1d46e9d8f8de6d",
  "private": false,
  "record": {
    "abstract": "We propose and analyze a novel regenerative amplifier free electron laser\n(FEL) to produce fully coherent x-ray pulses. The method makes use of\nnarrow-bandwidth Bragg crystals to form an x-ray feedback loop around a\nrelatively short undulator. Self-amplified spontaneous emission (SASE) from the\nleading electron bunch in a bunch train is spectrally filtered by the Bragg\nreflectors and is brought back to the beginning of the undulator to interact\nrepeatedly with subsequent bunches in the bunch train. The FEL interaction with\nthese short bunches not only amplifies the radiation intensity but also\nbroadens its spectrum, allowing for effective transmission of the x-rays\noutside the crystal bandwidth. The spectral brightness of these x-ray pulses is\nabout two to three orders of magnitude higher than that from a single-pass SASE\nFEL.",
    "arxiv_id": "physics/0602076",
    "authors": [
      "Zhirong Huang",
      "Ronald D. Ruth"
    ],
    "categories": [
      "physics.acc-ph",
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevLett.96.144801",
    "journal_ref": "Phys.Rev.Lett. 96 (2006) 144801",
    "title": "Fully Coherent X-ray Pulses from a Regenerative Amplifier Free Electron   Laser",
    "url": "https://arxiv.org/abs/physics/0602076"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c78d2f0a-52fe-4c64-86cf-e5b25c4ae6bb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}