{
  "abstract": "The demand for brighter photon beams has driven the development of diffraction-limited storage rings with ultralow electron beam emittance. A complex bend (CB) lattice was recently proposed as an approach for the future NSLS-II upgrade. As a step toward this upgrade, NSLS-II plans to replace two existing electromagnetic dipoles with permanent-magnet CBs, providing the first experimental demonstration of the CB concept in a storage ring. This paper presents the linear optics design, nonlinear optimization, and machine error evaluation of the modified NSLS-II lattice. The optimized lattice provides sufficient dynamic and momentum apertures for off-axis injection and routine operation and can be corrected with the existing NSLS-II correction scheme. Scraper measurements near the planned CB installation location validate the beam aperture requirements used in the CB design.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.07854",
  "author_total": 7,
  "authors": [
    {
      "name": "Minghao Song"
    },
    {
      "name": "Yoshiteru Hidaka"
    },
    {
      "name": "Bernard Kosciuk"
    },
    {
      "name": "Patrick N'Gotta"
    },
    {
      "name": "Sushil Sharma"
    },
    {
      "name": "Timur Shaftan"
    },
    {
      "name": "Guimei Wang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1m5c53xe7p50f.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.07854",
  "fulltext_url": null,
  "id": "1m5c53xe7p50f",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.07854",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.acc-ph"
    ],
    [
      "openalex",
      "2208|Particle Accelerators and Free-Electron Lasers"
    ]
  ],
  "openalex": "W7211997610",
  "pdf_url": "https://arxiv.org/pdf/2609.07854",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1m5c53xe7p50f.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:48Z",
      "native_id": "2609.07854",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.07854"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.acc-ph",
      "subfield": "applied-instrumentation"
    }
  ],
  "title": "Design and optimization of the NSLS-II lattice with complex bend replacement",
  "title_text": "Design and optimization of the NSLS-II lattice with complex bend replacement",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:48Z",
  "url": "https://research.draconitic.com/paper/1m5c53xe7p50f",
  "venue": "arXiv",
  "versions": []
}