Schematic diagram of the Korean-XFEL Sandeep Kumar Heung-Sik Kang Dong Eon Kim 10.6084/m9.figshare.1012350.v1 https://iop.figshare.com/articles/figure/_Schematic_diagram_of_the_Korean_XFEL/1012350 <p><strong>Figure 1.</strong> Schematic diagram of the Korean-XFEL.</p> <p><strong>Abstract</strong></p> <p>The generation of an isolated attosecond pulse at 0.1 nm has been proposed in an ESASE scheme where an 800 nm, 5 fs FWHM carrier-envelop-phase stabilized laser is employed in the 10 GeV Pohang accelerator laboratory—x-ray free electron laser (PAL-XFEL). The radio-frequency (RF) phase effect has been studied on the current profile after the chicane and on the x-ray radiation power at 50 m along the undulator. This study leads to the tolerance in the RF phase. The results show that a single isolated attosecond radiation pulse could be produced inside the undulator; however, the RF phase should be controlled down to 0.05° in the linac section of the PAL-XFEL in order to satisfy the requirement for RF jitters suitable for pump–probe experiments.</p> 2013-08-13 00:00:00 esase attosecond radiation pulse fwhm nm RF phase laser undulator Atomic Physics Molecular Physics