{
  "abstract": "We report a cryogen-free cryogenic current comparator (CCC) system for precision resistance measurements. A helium-gas chamber was developed and installed on the 4 K stage of a cryogen-free dilution refrigerator equipped with a pulse-tube cryocooler. The CCC probe was housed in this chamber and was cooled through helium gas serving as a heat exchange medium. The metrological performance of this helium-gas-cooled CCC was evaluated through precision resistance-ratio measurements and found to be comparable to that obtained under liquid-helium cooling. A quantum Hall resistance (QHR) device was also integrated into the same refrigerator, enabling QHR/100~$Ω$ resistance-ratio measurements. The type-A uncertainty reached the 1~n$Ω$/$Ω$ level within an averaging time of 100~s, and the resulting resistance-ratio measurements agreed well with conventional liquid-helium-based measurements at the level of a few n$Ω$/$Ω$. The system provides this level of measurement performance while consuming less than 1~L of helium gas per thermal cycle.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.01124",
  "author_total": 3,
  "authors": [
    {
      "name": "Yuma Okazaki"
    },
    {
      "name": "Takehiko Oe"
    },
    {
      "name": "Nobu-Hisa Kaneko"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a6he1dhpkxkc7.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.01124",
  "fulltext_url": null,
  "id": "a6he1dhpkxkc7",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.01124",
  "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",
      "cond-mat.mes-hall"
    ],
    [
      "arxiv",
      "physics.ins-det"
    ],
    [
      "openalex",
      "2208|Advanced Electrical Measurement Techniques"
    ]
  ],
  "openalex": "W7206177679",
  "pdf_url": "https://arxiv.org/pdf/2609.01124",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/a6he1dhpkxkc7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "2609.01124",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.01124"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.ins-det",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Helium-Gas-Cooled Cryogenic Current Comparator Integrated with a Quantum Resistance Standard",
  "title_text": "Helium-Gas-Cooled Cryogenic Current Comparator Integrated with a Quantum Resistance Standard",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/a6he1dhpkxkc7",
  "venue": "arXiv",
  "versions": []
}