{
  "abstract": "Coherent synchrotron radiation generated in a bending magnet can propagate far downstream and heat the beam pipe. We investigate a beam-free side outlet that diverts part of this radiation into a separate guide. We use a paraxial equation to calculate radiation generation in the bend and its division between the two guides. Modal and finite-difference solutions are used in the bend, and quadratic finite elements on a changing transverse mesh in the branching region. We check the paraxial approximation against full-wave solutions at selected frequencies. Separately, we calculate radiation attenuation in a conducting pipe without an outlet using complex modes that satisfy impedance boundary conditions. For this example, independently damped perfectly conducting modes underestimate the high-frequency transmitted power. For a $70\\times25$ mm rectangular chamber with a $30^\\circ$ bend of radius 2.2 m and Gaussian bunches of rms length $10\\,μ$m, the selected outlet diverts about 53\\% of the total outgoing radiation power into the beam-free channel.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.31462",
  "author_total": 3,
  "authors": [
    {
      "name": "Igor Zagorodnov"
    },
    {
      "name": "Dmitry Bazyl"
    },
    {
      "name": "Gennady Stupakov"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dsn345b88wr6s.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.31462",
  "fulltext_url": null,
  "id": "dsn345b88wr6s",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.31462",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.acc-ph"
    ],
    [
      "openalex",
      "2208|Particle Accelerators and Free-Electron Lasers"
    ]
  ],
  "openalex": "W7223355482",
  "pdf_url": "https://arxiv.org/pdf/2610.31462",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dsn345b88wr6s.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:34Z",
      "native_id": "2610.31462",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.31462"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.acc-ph",
      "subfield": "applied-instrumentation"
    }
  ],
  "title": "Coherent synchrotron radiation extraction from a bent beam pipe",
  "title_text": "Coherent synchrotron radiation extraction from a bent beam pipe",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:34Z",
  "url": "https://research.draconitic.com/paper/dsn345b88wr6s",
  "venue": "arXiv",
  "versions": []
}