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RIS citation export for TUPRB062: Coherence Time Characterization for Self-Amplified Spontaneous Emission Free-Electron Lasers

AU  - Zhou, G.
AU  - Jiao, Y.
AU  - Raubenheimer, T.O.
AU  - Tsai, C.-Y.
AU  - Wang, J.Q.
AU  - Wu, J.
AU  - Yang, C.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Coherence Time Characterization for Self-Amplified Spontaneous Emission Free-Electron Lasers
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - One of the key challenges in scientific researches based on free-electron lasers (FELs) is the characterization of the coherence time of the ultra-fast hard x-ray pulse, which fundamentally influences the interaction process between x-ray and materials. Conventional optical methods, based on autocorrelation, is very difficult to realize due to the lack of mirrors. Here, we experimentally demonstrate a conceptually new coherence time characterization method and a coherence time of 174.7 attoseonds has been measured for the 6.92 keV FEL pulses at Linac Coherent Light Source. In our experiment, a phase shifter is adopted to control the cross-correlation between x-ray and microbunched electrons. This approach provides critical temporal coherence diagnostics for x-ray FELs, and is decoupled from machine parameters, applicable for any photon energy, radiation brightness, repetition rate and FEL pulse duration, etc.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 1820
EP  - 1823
KW  - electron
KW  - laser
KW  - free-electron-laser
KW  - radiation
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-TUPRB062
UR  - http://jacow.org/ipac2019/papers/tuprb062.pdf
ER  -