TY  - JOUR
AU  - Grech, Christian
AU  - Guetg, Marc
AU  - Geloni, Gianluca
AU  - Boesenberg, Ulrike
AU  - Kujala, Naresh
AU  - Makita, Mikako
AU  - Serkez, Svitozar
TI  - Crystal-based absolute photon energy calibration methods for hard x-ray free-electron lasers
JO  - Physical review accelerators and beams
VL  - 27
IS  - 5
SN  - 2469-9888
CY  - College Park, MD
PB  - American Physical Society
M1  - PUBDB-2023-00118
SP  - 050701
PY  - 2024
AB  - Bragg diffraction from crystals is widely used to select a very narrow spectral range of x-ray pulses. The diffracted signal can be used to calibrate the photon energy, a fact that can be exploited very effectively at x-ray free-electron lasers (XFELs). This work describes three crystal-based methods used to this goal at a major x-ray FEL facility, the European XFEL. These methods, which have a wide applicability, have been developed in relation to the hard x-ray self-seeding setup installed at the SASE2 undulator. They are fast and straightforward to implement since they are based on techniques for extracting and identifying crystal reflections from standard diagnostic raw data while still delivering few electronvolts resolution.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001231085700001
DO  - DOI:10.1103/PhysRevAccelBeams.27.050701
UR  - https://bib-pubdb1.desy.de/record/491380
ER  -