Unresolvable Identifier

arXiv:2605.08370 · detector doi_compliance · cross_source · 2026-05-19 11:11:17.159410+00:00

critical doi_compliance unresolvable_identifier

Identifier '10.1103/physrevaccelbeams.22.044002' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.

Paper page Integrity report arXiv Try DOI

Evidence text

J. Eldred et al. , “Rapid -cycling synchrotron options for a multi-MW proton facility at Fermilab,” Phys. Rev. Accel. Beams, vol. 22, no. 4, p. 044002, Apr. 2019. https://doi.org/10.1103/PhysRevAccelBeams.22.044002

Evidence payload

{
  "arxiv_id": null,
  "checked_sources": [
    "crossref_by_doi",
    "openalex_by_doi",
    "doi_org_head"
  ],
  "doi": "10.1103/physrevaccelbeams.22.044002",
  "raw_excerpt": "J. Eldred et al. , \u201cRapid -cycling synchrotron options for a multi-MW proton facility at Fermilab,\u201d Phys. Rev. Accel. Beams, vol. 22, no. 4, p. 044002, Apr. 2019. https://doi.org/10.1103/PhysRevAccelBeams.22.044002",
  "ref_index": 5,
  "verdict_class": "cross_source"
}