{
  "annotation_id": "2b89a713-098b-4ff9-95b1-1a1d16319054",
  "date_created": "2026-03-02T18:00:53.573000Z",
  "date_modified": "2026-03-02T18:00:53.573000Z",
  "file_hash": "318e87602f9598a550cde7e041b71d36e553dcbad13ca11b2efd214e3a1608bc",
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  "record": {
    "abstract": "We describe a device to conveniently measure the positions of the phase\nboundaries in a dilution refrigerator. We show how a simple modification of a\nstandard capacitive level gauge (segmentation of one of the electrodes) permits\na direct calibration of the capacitance versus phase boundary position. We\ncompare this direct calibration with the indirect procedure that must be\nadopted for a conventional capacitive level gauge. The device facilitates the\ncorrect adjustment of the 3He/4He fraction in the dilution refrigerator.",
    "arxiv_id": "physics/0409136",
    "authors": [
      "E. ter Haar",
      "R. V. Martin"
    ],
    "categories": [
      "physics.ins-det"
    ],
    "doi": "10.1063/1.1784568",
    "journal_ref": "Review of Scientific Instruments -- September 2004 -- Volume 75,\n  Issue 9, pp. 3071-3073",
    "title": "Phase boundary detection for dilution refrigerators",
    "url": "https://arxiv.org/abs/physics/0409136"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c7ab806b-3017-4266-b36a-6a0e350040b3",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}