{
  "abstract": "Ion cyclotron radio-frequency heating (ICRH) is a key auxiliary heating system in ITER, but high-power RF operation can enhance plasma-material interactions through rectified RF sheath potentials on antenna structures and nearby plasma-facing components. We present the first predictive application of the STRIPE (Simulated Transport of RF Impurity Production and Emission) framework to assess RF sheath-driven tungsten (W) erosion and global impurity transport from the ITER ICRH antenna under ITER-relevant neon-seeded conditions. STRIPE couples SOLPS-ITER plasma backgrounds, full-wave RF sheath calculations, geometry-specific ion energy-angle distributions, sputtering physics, and three-dimensional impurity transport. Simulations predict RF sheath potentials of 1 to 3 kV on antenna limiter sidewalls, increasing gross W erosion by about a factor of 64 relative to thermal sheath conditions and producing a gross source of 3.34e18 W atoms per second. Erosion is governed by RF-modified ion energy-angle distributions together with local plasma flux rather than sheath voltage alone. About 10 percent of sputtered W is locally redeposited, giving a net source of 3.01e18 W atoms per second. The RF-induced antenna source remains about three orders of magnitude smaller than the thermal divertor source and more than two orders of magnitude smaller than the integrated thermal main-chamber source. After 100 ms, about 22 percent of the mobile W inventory resides within the SOLPS-covered confined-plasma region, corresponding to an annular W concentration of 1.70e-6. These results indicate that the ITER ICRH antenna is unlikely to dominate the total W source budget under the conditions considered and demonstrate the need for coupled modeling of RF waves, sheaths, sputtering, redeposition, and global impurity transport.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.09408",
  "author_total": 18,
  "authors": [
    {
      "name": "Atul Kumar"
    },
    {
      "name": "Dhyanjyoti Nath"
    },
    {
      "name": "Wouter Tierens"
    },
    {
      "name": "Jeremy D. Lore"
    },
    {
      "name": "Andrei Pshenov"
    },
    {
      "name": "Tom Wauters"
    },
    {
      "name": "Andrea Galvan"
    },
    {
      "name": "Davide Curreli"
    },
    {
      "name": "Syun'ichi Shiraiwa"
    },
    {
      "name": "Nicola Bertelli"
    },
    {
      "name": "Guillaume Urbanczyk"
    },
    {
      "name": "Sebastijan Brezinsek"
    },
    {
      "name": "Onkar Sahni"
    },
    {
      "name": "Mark Shephard"
    },
    {
      "name": "Walid Helou"
    },
    {
      "name": "Xavier Bonnin"
    },
    {
      "name": "Klaus Schmid"
    },
    {
      "name": "Volodymyr Bobkov"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cdt3gj9q768me.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.09408",
  "fulltext_url": null,
  "id": "cdt3gj9q768me",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.09408",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.plasm-ph"
    ],
    [
      "openalex",
      "2505|Fusion materials and technologies"
    ]
  ],
  "openalex": "W7212165027",
  "pdf_url": "https://arxiv.org/pdf/2609.09408",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cdt3gj9q768me.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:12Z",
      "native_id": "2609.09408",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.09408"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.plasm-ph",
      "subfield": "plasma"
    }
  ],
  "title": "RF-Specific Tungsten Erosion and Global Transport in ITER under Neon Seeding",
  "title_text": "RF-Specific Tungsten Erosion and Global Transport in ITER under Neon Seeding",
  "type": "preprint",
  "updated_at": "2026-10-30T12:20:12Z",
  "url": "https://research.draconitic.com/paper/cdt3gj9q768me",
  "venue": "arXiv",
  "versions": []
}