10.6084/m9.figshare.1012354.v1 Sandeep Kumar Sandeep Kumar Heung-Sik Kang Heung-Sik Kang Dong Eon Kim Dong Eon Kim RF phase effect of linac-column <em>L</em><sub>1</sub> on the e-bunch length, the current profile after the chicane (main peak, second peak and third highest peak) and the radiation power at a position of 50 m along the undulator IOP Publishing 2013 esase attosecond radiation pulse fwhm profile RF phase chicane nm laser undulator Atomic Physics Molecular Physics 2013-08-13 00:00:00 Figure https://iop.figshare.com/articles/figure/_RF_phase_effect_of_linac_column_em_L_em_sub_1_sub_on_the_e_bunch_length_the_current_profile_after_t/1012354 <p><strong>Figure 5.</strong> RF phase effect of linac-column <em>L</em><sub>1</sub> on the e-bunch length, the current profile after the chicane (main peak, second peak and third highest peak) and the radiation power at a position of 50 m along the undulator.</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>