Transmission measurement at the Bernina branch of the Aramis Beamline of SwissFEL.
XFEL
instrumentation
performance
Journal
Journal of synchrotron radiation
ISSN: 1600-5775
Titre abrégé: J Synchrotron Radiat
Pays: United States
ID NLM: 9888878
Informations de publication
Date de publication:
01 Nov 2019
01 Nov 2019
Historique:
received:
03
07
2019
accepted:
26
09
2019
entrez:
14
11
2019
pubmed:
14
11
2019
medline:
14
11
2019
Statut:
ppublish
Résumé
The transmission of the optical components of the Bernina branch of the Aramis beamline at SwissFEL has been measured with an X-ray gas monitor from DESY and compared with a PSI gas detector upstream of the optical components. The transmission efficiencies of the Mo, Si and SiC mirror coatings of the Aramis beamline and the various other in-beam components were evaluated and compared with theoretical calculations, showing an agreement of 6% or better in all cases. The experiment has also shown the efficacy of the high-harmonic rejection mirrors at the Bernina branch of the Aramis beamline at SwissFEL, and characterized the transmission efficiency of the on-line spectrometer in the Aramis beamline. The theoretical transmission of the mirror coatings match the experimental data to within 7%. The accuracy of these measurements was checked against a radiative bolometer from a Japanese collaboration and found to agree to a level of 4% or better. Further comparisons with a diamond detector from a US-based inter-institute collaboration demonstrated a good agreement for the attenuator settings of the beamline.
Identifiants
pubmed: 31721754
pii: S1600577519013237
doi: 10.1107/S1600577519013237
pmc: PMC6853380
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2081-2085Informations de copyright
open access.
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