{
  "abstract": "Edge localized mode (ELM) pacing via vertical plasma oscillations or jogging has been successfully demonstrated on DIII-D. Rapid vertical movement of the plasma toward the X-point has been shown to effectively trigger ELMs. By vertically oscillating the plasma at a rate of 10 Hz, the ELM frequency increased from $\\sim$5~Hz, the natural ELM frequency in similar DIII-D discharges, to 10~Hz. Downward jogs have been observed to trigger multiple ELMs in one cycle. ELMs triggered at higher than natural frequencies lead to smaller decreases in stored energy, from ~10\\% to as little as below 1\\%. As a consequence, the peak heat flux to the divertor has been observed to be reduced by a factor of $\\sim$2. In addition, a reduction in the carbon impurity concentration has been observed. During downward jogs in the lower single null (LSN) configuration, the X-point movement is slower and smaller than the top of the plasma. As a result, a reduction in the plasma cross section and hence volume has been observed. To understand the mechanism of ELM triggering by jogging, a toy model of the edge toroidal current has been built and tested with DIII-D experiment data. The experimental data and model suggest that when the plasma moves down towards the X-point, a net positive toroidal current is locally induced in the edge region. ELITE stability analysis suggests that this current pushes the plasma state across the peeling side of the peeling-ballooning stability boundary into the unstable region triggering ELMs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.00165",
  "author_total": 6,
  "authors": [
    {
      "name": "Kei Yasoda"
    },
    {
      "name": "Dario Panici"
    },
    {
      "name": "Andrew Oak Nelson"
    },
    {
      "name": "Florian M. Laggner"
    },
    {
      "name": "Sangkyeun Kim"
    },
    {
      "name": "Egemen Kolemen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4wrz7775a1vek.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.00165",
  "fulltext_url": null,
  "id": "4wrz7775a1vek",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.00165",
  "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",
      "physics.plasm-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2605.00165",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4wrz7775a1vek.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:41Z",
      "native_id": "2605.00165",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.00165"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.plasm-ph",
      "subfield": "plasma"
    }
  ],
  "title": "Characterization of ELM Pacing via Vertical Jogs on DIII-D",
  "title_text": "Characterization of ELM Pacing via Vertical Jogs on DIII-D",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:41Z",
  "url": "https://research.draconitic.com/paper/4wrz7775a1vek",
  "venue": "arXiv",
  "versions": []
}