{
  "annotation_id": "3abe3b70-1de0-44b4-ba6b-1fce4aca7ffb",
  "date_created": "2026-03-02T18:00:35.998000Z",
  "date_modified": "2026-03-02T18:00:35.998000Z",
  "file_hash": "641bb48936c28f634ab3cb8f17d4708b472c242ffd1b94e99bc8b26eeb14b866",
  "private": false,
  "record": {
    "abstract": "KEK-ATF is doing R\u0026D establishing high-current and low-emittance electron\nbeam for the future linear colliders. In ATF, 15 ps length electron beam is\ngenerated by combination of a thermionic gun, a couple of 357 MHz SHBs, and a\nS-band TW buncher. In the linac, beam instability caused by the fluctuated\namplitude and phase of SHBs has been observed. The reason of the fluctuation is\nconsidered to be the multi-pacting in the SHB cavity. In addition, Q value of\nthe cavity is almost half of the designed value, then SHBs are not operated in\nan optimum condition. We have fabricated new SHBs with considerations avoiding\nthe multi-pacting and recovering Q value. A simulation shows that bunching\nquality is improved with the new SHB cavity.",
    "arxiv_id": "physics/0106082",
    "authors": [
      "Masao Kuriki",
      "Hitoshi Hayano",
      "Katsushi Hasegawa"
    ],
    "categories": [
      "physics.acc-ph"
    ],
    "title": "New 357 MHz Sub Harmonic Buncher",
    "url": "https://arxiv.org/abs/physics/0106082"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f0941550-73d8-4dca-a5c5-9dbba5764706",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}