{
  "annotation_id": "ebc6a94c-5c54-4756-9e59-24f836b1fb12",
  "date_created": "2026-03-02T18:00:36.124000Z",
  "date_modified": "2026-03-02T18:00:36.124000Z",
  "file_hash": "1689ca4ab926b996d7d2ebc3af1b35db130cf36575d01c9e586d52847da5eeb7",
  "private": false,
  "record": {
    "abstract": "KEK-ATF is studying the low-emittance multi-bunch electron beam for the\nfuture linear collider. In ATF, thermionic gun is used to generate 20 bunches\nelectron beam with the bunch spacing of 2.8 ns. Due to a distortion of the gun\nemission and the beam loading effect in the bunching system, the intensity for\neach bunch is not uniform by up to 40 % at the end of the injector. We have\ndeveloped a system to correct the gun emission by precisely controlling the\ncathode voltage with a function generator. For the beam loading effect, we have\nintroduced RF amplitude modulation on Sub Harmonic Buncher, SHB. By these\ntechnique, bunch intensity uniformity was improved and beam transmission for\nlater bunches was recovered from 67% to 91%, but intensity for first five\nbunches is still lower than others.",
    "arxiv_id": "physics/0103074",
    "authors": [
      "M. Kuriki",
      "H. Hayano",
      "T. Naito",
      "K. Hasegawa"
    ],
    "categories": [
      "physics.acc-ph"
    ],
    "title": "Multi-bunch generation by thermionic gun",
    "url": "https://arxiv.org/abs/physics/0103074"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c1ede21d-5c3c-46e5-a0ed-f750ee76d027",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}