{
  "annotation_id": "59482d45-f4eb-4972-a6cb-5784899ae3c2",
  "date_created": "2026-03-02T18:01:14.570000Z",
  "date_modified": "2026-03-02T18:01:14.570000Z",
  "file_hash": "a103e93193fa5e1884f45e85435da98a355027a03b93c2d921d396e2f6f143d9",
  "private": false,
  "record": {
    "abstract": "The HANARO ex-core neutron irradiation facility was developed for various\napplications in the boron neutron capture therapy (BNCT) field, and its\ncharacteristics have been investigated. In order to obtain a sufficient thermal\nneutron flux with a low level contamination of fast neutrons and gamma-rays, a\nradiation filtering method is adopted. The radiation filter has been designed\nby using a silicon single crystal cooled by liquid nitrogen and a bismuth\ncrystal. The installation of the main components of the irradiation facility\nand the irradiation room are finished. Experimental measurements of the neutron\nbeam characteristics have been performed by using bare and cadmium covered gold\nfoils and wires. The in-phantom neutron flux distribution was measured for a\nflux mapping inside the phantom. The gamma-ray dose was determined by using\nTLD-700 thermoluminescence dosimeters. The thermal and fast neutron fluxes and\nthe gamma-ray dose were calculated by using the MCNP code, and they were\ncompared with experimental data. The thermal neutron flux and Cd ratio which\ncan be obtained at this facility are 1.49E9 n/cm2s and 152, respectively. The\nmaximum neutron flux inside the phantom was measured to be 2.79E9 n/cm2s at a\ndepth of 3 mm in the phantom. The two-dimensional in-phantom neutron flux\ndistribution was determined, and the significant neutron irradiation was\nobserved within 20 mm from the phantom surface. The gamma-ray dose rate for the\nfree beam condition is expected to be about 80 cGy/hr. These experimental\nresults are reasonably well supported by the calculated values of the facility\ndesign code. This HANARO thermal neutron facility can be used not only for a\nclinical trial but also for various basic irradiation researches of the BNCT\nfield.",
    "arxiv_id": "physics/0611168",
    "authors": [
      "Myong-Seop Kim",
      "Byung-Chul Lee",
      "Sung-Yul Hwang",
      "Heonil Kim",
      "Byung-Jin Jun"
    ],
    "categories": [
      "physics.med-ph"
    ],
    "doi": "10.1088/0031-9155/52/9/015",
    "title": "Development and characteristics of the HANARO ex-core neutron   irradiation facility for applications in the boron neutron capture therapy   field",
    "url": "https://arxiv.org/abs/physics/0611168"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5d409924-2ec1-4e43-913e-485bc49912cc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}