{
  "abstract": "A prototype 185.7 MHz superconducting radio-frequency (SRF) electron gun cryomodule has been developed for the proposed LCLS-II-HE Low Emittance Injector at SLAC. It has an in-situ ultra-high-vacuum exchangeable cathode plug system compatible with semiconductor photocathodes. With a copper plug, the gun achieved continuous-wave RF operation at a cathode field of 30 MV/m. No measurable degradation was observed after plug removal and reinsertion with the cavity at 4.4 K. This result is a significant improvement over past continuous-wave SRF gun systems with exchangeable plugs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.12233",
  "author_total": 33,
  "authors": [
    {
      "name": "T. Konomi"
    },
    {
      "name": "T. Xu"
    },
    {
      "name": "Y. Choi"
    },
    {
      "name": "K. Elliott"
    },
    {
      "name": "B. Gower"
    },
    {
      "name": "B. Tousignant"
    },
    {
      "name": "J. Wenstrom"
    },
    {
      "name": "A. Taylor"
    },
    {
      "name": "C. Compton"
    },
    {
      "name": "W. Chang"
    },
    {
      "name": "X. Du"
    },
    {
      "name": "W. Hartung"
    },
    {
      "name": "S. H. Kim"
    },
    {
      "name": "S. Miller"
    },
    {
      "name": "D. Morris"
    },
    {
      "name": "M. Patil"
    },
    {
      "name": "L. Popielarski"
    },
    {
      "name": "J. Wei"
    },
    {
      "name": "Z. Yin"
    },
    {
      "name": "J. Smedley"
    },
    {
      "name": "J. Maniscalco"
    },
    {
      "name": "C. Adolphsen"
    },
    {
      "name": "M. Murphy"
    },
    {
      "name": "D. A. Gonnella"
    },
    {
      "name": "M. P. Kelly"
    },
    {
      "name": "T. Petersen"
    },
    {
      "name": "A. Arnold"
    },
    {
      "name": "S. Gatzmaga"
    },
    {
      "name": "R. Steinbrück"
    },
    {
      "name": "P. Murcek"
    },
    {
      "name": "R. Xiang"
    },
    {
      "name": "J. Teichert"
    },
    {
      "name": "J. Lewellen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2c6hj1fbs3wyp.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.12233",
  "fulltext_url": null,
  "id": "2c6hj1fbs3wyp",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.12233",
  "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",
      "2202|Particle accelerators and beam dynamics"
    ]
  ],
  "openalex": "W7213372362",
  "pdf_url": "https://arxiv.org/pdf/2609.12233",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2c6hj1fbs3wyp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:26:45Z",
      "native_id": "2609.12233",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.12233"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.acc-ph",
      "subfield": "applied-instrumentation"
    }
  ],
  "title": "Continuous-Wave Operation at 30 MV/m of a Superconducting Radio-Frequency Gun Cryomodule with an Exchangeable Cathode Plug",
  "title_text": "Continuous-Wave Operation at 30 MV/m of a Superconducting Radio-Frequency Gun Cryomodule with an Exchangeable Cathode Plug",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:45Z",
  "url": "https://research.draconitic.com/paper/2c6hj1fbs3wyp",
  "venue": "arXiv",
  "versions": []
}