{
  "annotation_id": "f99d0578-9f0a-4c14-ad53-082f821d89ba",
  "date_created": "2026-03-02T18:00:49.719000Z",
  "date_modified": "2026-03-02T18:00:49.719000Z",
  "file_hash": "4ee00a4fa4929dec1ab297e947c267f387ffcd0b125bf928ed660b69664649ee",
  "private": false,
  "record": {
    "abstract": "Ion chambers used to monitor the secondary hadron and tertiary muon beam in\nthe NuMI neutrino beamline will be exposed to background particles, including\nlow energy neutrons produced in the beam dump. To understand these backgrounds,\nwe have studied Helium- and Argon-filled ionization chambers exposed to intense\nneutron fluxes from PuBe neutron sources ($E_n=1-10$ MeV). The sources emit\nabout 10$^8$ neutrons per second. The number of ion pairs in the chamber gas\nvolume per incident neutron is derived. While limited in precision because of a\nlarge gamma ray background from the PuBe sources, our results are consistent\nwith the expectation that the neutrons interact purely elastically in the\nchamber gas.",
    "arxiv_id": "physics/0405016",
    "authors": [
      "D. Indurthy",
      "A. R. Erwin",
      "D. Harris",
      "S. Kopp",
      "M. Proga",
      "R. M. Zwaska"
    ],
    "categories": [
      "physics.ins-det",
      "hep-ex",
      "physics.acc-ph"
    ],
    "doi": "10.1016/j.nima.2004.04.210",
    "journal_ref": "Nucl.Instrum.Meth. A528 (2004) 731-740",
    "title": "Study of Neutron-Induced Ionization in Helium and Argon Chamber Gases",
    "url": "https://arxiv.org/abs/physics/0405016"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3a2a9ff1-fa26-4b9d-b2e9-5c26bd2a5b16",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}