{
  "annotation_id": "2f2381dd-6305-428c-b07e-d3e888c010d7",
  "date_created": "2026-03-02T18:00:32.075000Z",
  "date_modified": "2026-03-02T18:00:32.075000Z",
  "file_hash": "ed675f0a29b325253b606b89f9bbc7744f5af4abc85036721ff115bef44465c8",
  "private": false,
  "record": {
    "abstract": "A bunching system is proposed for the initial stage of CTF3 which consists of\none (two) 3 GHz prebunchers and one 3 GHz travelling wave (TW) buncher with\nvariable phase velocities. The electron beam is emitted from a 140 KV DC gun.\nSince the macropulse beam current (3.5 A) at the exit of the TW buncher is\nrather high, inside the TW buncher one has to take the beam loading effect into\nconsideration. By using PARMELA, it is shown numerically that the bunching\nsystem can provide the bunches whose properties satisfy the design requirement\nof CTF3. The 0.8 m long TW buncher working at 2pi/3 mode has two phase\nvelocities, 0.75 and 1. The dimensions of the caities in the two phase velocity\nregions are proposed considering the beam loading effect. The transient beam\nloading effect and the multibunch transverse instabilities are studied\nnumerically, and it is concluded that higher order mode couplers should be\ninstalled in the TW buncher with the loaded quality factor of the dipole mode\nlower than 80.",
    "arxiv_id": "physics/0007052",
    "authors": [
      "Y. Thiery",
      "J. Gao",
      "J. Le Duff"
    ],
    "categories": [
      "physics.acc-ph"
    ],
    "journal_ref": "eConf C000821 (2000) MOB01",
    "title": "Design Studies for a High Current Bunching System for CLIC Test Facility   (CTF3) Drive Beam",
    "url": "https://arxiv.org/abs/physics/0007052"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d1ddf1a3-6758-42a7-a41d-7f45b5ff66a0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}