{
  "abstract": "Compact high-temperature superconducting quantum interference device (HTS-SQUID) magnetometers require a liquid-nitrogen Dewar that balances operating duration against instrument-envelope and mass constraints. Here we introduced a constraint-traceable design workflow in which body radius and neck-length fraction were scanned under fixed outer-envelope volume and geometry-based mass limits. The longest-duration feasible grid point lay adjacent to the 3.85 kg and 550 mm constraint intersection, predicting 224 h hold time from a body-only initial fill to a residual liquid depth of 10 mm. A reference Dewar was experimentally monitored for 137.3 h, consuming 1.22 L liquid-nitrogen of its initial inventory. A thermal model calibrated over the first 40 h reproduced the remaining 97.3 h. Device measurements at liquid-nitrogen temperature showed a superconducting transition and Fraunhofer-like junction response, a maximum voltage-modulation depth of 36.2 $μ$V, and a median noise level of 41.5 fT Hz$^{-1/2}$ from 100 to 1000 Hz. These results establish a reproducible method for selecting Dewar geometry under coupled constraints and demonstrate compatibility with long-endurance and low-noise HTS-SQUID magnetometer systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.14661",
  "author_total": 12,
  "authors": [
    {
      "name": "Xinmin Shi"
    },
    {
      "name": "Bingke Xiang"
    },
    {
      "name": "Lingtong Hou"
    },
    {
      "name": "Wanjuan Tang"
    },
    {
      "name": "Geming Zhang"
    },
    {
      "name": "Shiqun Liu"
    },
    {
      "name": "Ruonan Wang"
    },
    {
      "name": "Yibo Wang"
    },
    {
      "name": "Zhiqiang Cao"
    },
    {
      "name": "Xueshen Wang"
    },
    {
      "name": "Xueying Zhang"
    },
    {
      "name": "Xiaoyang Lin"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f23ndgn2gfr3j.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.14661",
  "fulltext_url": null,
  "id": "f23ndgn2gfr3j",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.14661",
  "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.supr-con"
    ],
    [
      "arxiv",
      "physics.ins-det"
    ],
    [
      "openalex",
      "2204|Superconducting Materials and Applications"
    ]
  ],
  "openalex": "W7213311273",
  "pdf_url": "https://arxiv.org/pdf/2609.14661",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f23ndgn2gfr3j.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:25Z",
      "native_id": "2609.14661",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.14661"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.ins-det",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.supr-con",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Constraint-Traceable Liquid-Nitrogen Dewar Design for Low-Noise HTS-SQUID Magnetometry",
  "title_text": "Constraint-Traceable Liquid-Nitrogen Dewar Design for Low-Noise HTS-SQUID Magnetometry",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:25Z",
  "url": "https://research.draconitic.com/paper/f23ndgn2gfr3j",
  "venue": "arXiv",
  "versions": []
}