{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T11:54:36Z","timestamp":1790942076266,"version":"4.1.0"},"reference-count":38,"publisher":"International Union of Crystallography (IUCr)","issue":"5","license":[{"start":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T00:00:00Z","timestamp":1784246400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"},{"start":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T00:00:00Z","timestamp":1784246400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"funder":[{"DOI":"10.13039\/501100002347","name":"Bundesministerium f\u00fcr Bildung und Forschung","doi-asserted-by":"publisher","award":["05K16FK2"],"award-info":[{"award-number":["05K16FK2"]}],"id":[{"id":"10.13039\/501100002347","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["J Synchrotron Rad","J Synchrotron Radiat"],"accepted":{"date-parts":[[2026,6,3]]},"published-print":{"date-parts":[[2026,9,1]]},"abstract":"<jats:p>\n                    The diagnostics and laser infrastructure of the Soft X-ray Port (SXP) at the European X-ray Free Electron Laser are presented. Designed as a supplementary open port, SXP aims to enhance the research capabilities alongside the existing baseline instruments at the SASE3 soft X-ray undulator exploiting the high repetition rate operation enabled by superconducting acceleration cavities. These instruments already support studies in atomic, molecular and non-linear optics (SQS), as well as condensed matter physics (SCS). The inception of SXP is largely motivated by the community involved in time-resolved X-ray photoelectron spectroscopy (tr-XPES), focusing on material science dynamics at surfaces and interfaces. The dedicated endstation equipped with a time-of-flight momentum microscope allows for simultaneous recording of energy- and angle-resolved photoelectron distributions in a pump\u2013probe setting, employing two synchronized femtosecond laser systems meant to cover a broad spectrum from the infrared to the extreme ultraviolet region. The alignment laser system, pump\u2013probe laser transport, including the in-coupling optics, and the installed photon arrival-time monitor are described. Under the present operating conditions, however, the photon arrival-time monitor does not yet provide routine single-shot timing corrections, so the currently demonstrated temporal benchmark is obtained\n                    <jats:italic>in situ<\/jats:italic>\n                    at the tr-XPES endstation. Measurements on a patterned Au reference sample show that the laser spot sizes can be characterized directly and that sidebands yield an X-ray\/optical cross-correlation of about 58\u2005fs (FWHM). These measurements define the spatial and temporal instrument response currently achieved for pump\u2013probe experiments at SXP.\n                  <\/jats:p>","DOI":"10.1107\/s1600577526005886","type":"journal-article","created":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T16:40:56Z","timestamp":1784306456000},"page":"1531-1541","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":0,"title":["The diagnostics and laser infrastructure at the Soft X-ray Port of the European XFEL"],"prefix":"10.1107","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7042-9334","authenticated-orcid":true,"given":"Patrik","family":"Grychtol","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wp2jz98","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vahagn","family":"Vardanyan","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wp2jz98","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pranav","family":"Bhardwaj","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wp2jz98","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Heber","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wp2jz98","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Doblas-Jimenez","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wp2jz98","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-4654-6059","authenticated-orcid":true,"given":"Ekaterina","family":"Tikhodeeva","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wp2jz98","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Serguei","family":"Molodtsov","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wp2jz98","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1389-4512","authenticated-orcid":true,"given":"Manuel","family":"Izquierdo","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01wp2jz98","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"329","published-online":{"date-parts":[[2026,7,17]]},"reference":[{"key":"mad5007_bb1","doi-asserted-by":"crossref","first-page":"122631","DOI":"10.1016\/j.susc.2024.122631","volume":"753","author":"Aeschlimann","year":"2025","journal-title":"Surf. 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