Review of technical achievements in PAL-XFEL

Abstract

The X-ray Free Electron Laser of Pohang Accelerator Laboratory (PAL-XFEL) was opened for the user in 2017. PAL-XFEL was the third XFEL facility in the world and well known for the small timing jitter of FEL radiation. This success was possible because of the significant achievements in the accelerator technology in PAL-XFEL. They are not limited to a small part of the accelerator but cover from the injector for the electron beam generation to the undulator line for FEL radiation. In this review, we describe the details of newly developed devices that contributed to the successful construction of PAL-XFEL.