Open AccessStatistical analysis of hard X‐ray radiation at the PAL‐XFEL facility performed by Hanbury Brown and Twiss interferometry
Author(s) -
Kim Young Yong,
Khubbutdinov Ruslan,
Carnis Jerome,
Kim Sangsoo,
Nam Daewoong,
Nam Inhyuk,
Kim Gyujin,
Shim Chi Hyun,
Yang Haeryong,
Cho Myunghoon,
Min Chang-Ki,
Kim Changbum,
Kang Heung-Sik,
Vartanyants Ivan A.
Publication year - 2022
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577522008773
Subject(s) - physics , monochromator , beamline , optics , interferometry , coherence (philosophical gambling strategy) , radiation , statistical analysis , photon , synchrotron radiation , photon energy , beam (structure) , wavelength , statistics , mathematics , quantum mechanics
A Hanbury Brown and Twiss interferometry experiment based on second‐order correlations was performed at the PAL‐XFEL facility. The statistical properties of the X‐ray radiation were studied within this experiment. Measurements were performed at the NCI beamline at 10 keV photon energy under various operation conditions: self‐amplified spontaneous emission (SASE), SASE with a monochromator, and self‐seeding regimes at 120 pC, 180 pC and 200 pC electron bunch charge. Statistical analysis showed short average pulse duration from 6 fs to 9 fs depending on the operational conditions. A high spatial degree of coherence of about 70–80% was determined in the spatial domain for the SASE beams with the monochromator and self‐seeding regime of operation. The obtained values describe the statistical properties of the beams generated at the PAL‐XFEL facility.