{
  "name": "DESY photon facilities as described by DESY",
  "description": "Comparison of DESY's PETRA III, FLASH and the planned PETRA IV, compiled from DESY's own facility and about pages read on 2026-11-13. Values not stated by DESY are marked as not stated rather than estimated.",
  "page": "https://casrai.org/guides/desy",
  "publisher": "CASRAI",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "dateModified": "2026-11-13T05:23:03Z",
  "temporalCoverage": "1959/2026",
  "spatialCoverage": "Hamburg, Germany",
  "columns": [
    {
      "name": "Facility",
      "unit": "",
      "description": ""
    },
    {
      "name": "Type",
      "unit": "",
      "description": ""
    },
    {
      "name": "Length",
      "unit": "m",
      "description": ""
    },
    {
      "name": "Experimental capacity",
      "unit": "",
      "description": ""
    },
    {
      "name": "Status as stated by DESY",
      "unit": "",
      "description": ""
    }
  ],
  "rows": [
    {
      "Facility": "PETRA III",
      "Type": "Storage-ring X-ray source",
      "Length": 2304,
      "Experimental capacity": "25 beamlines, almost 60 instruments",
      "Status as stated by DESY": "Converted from PETRA (commissioned 1978); one of the brightest storage-ring-based X-ray sources since 2010"
    },
    {
      "Facility": "FLASH",
      "Type": "Free-electron laser (superconducting linac, VUV and soft X-ray)",
      "Length": 315,
      "Experimental capacity": "Two beamlines in parallel; five stations in Albert Einstein hall, room for six more in Kai Siegbahn hall",
      "Status as stated by DESY": "Test facility 1992-2005; user facility since 2005"
    },
    {
      "Facility": "PETRA IV",
      "Type": "Planned 4D X-ray microscope",
      "Length": "Not stated",
      "Experimental capacity": "Not stated",
      "Status as stated by DESY": "Planned"
    }
  ],
  "sources": [
    {
      "title": "DESY, PETRA III",
      "url": "https://www.desy.de/research/facilities__projects/petra_iii/index_eng.html",
      "accessed": "2026-11-13"
    },
    {
      "title": "DESY, FLASH",
      "url": "https://www.desy.de/research/facilities__projects/flash/index_eng.html",
      "accessed": "2026-11-13"
    },
    {
      "title": "DESY, About DESY",
      "url": "https://www.desy.de/about_desy/index_eng.html",
      "accessed": "2026-11-13"
    }
  ]
}