Speakers
Description
The cavity-based XFEL (CBXFEL) is a novel X-ray source based on an X-ray Free-Electron Laser (XFEL) encased in an optical cavity. This concept, when built, will offer substantial improvements in X-ray brightness and coherence compared to existing high-gain SASE sources. A joint project is underway at SLAC National Accelerator Laboratory, in collaboration with Argonne National Laboratory and the RIKEN SPring-8 Center, to demonstrate CBXFEL technology with the first seven hard X-ray undulators of the LCLS. We report on recent progress in CBXFEL construction efforts. We describe the initial optical alignment of the cavity Bragg mirrors, the performance of the photon diagnostics, and future plans for CBXFEL lasing. We especially focus on the challenges of CBXFEL operation and our solutions. Finally, we demonstrate that our measurements are corroborated by theoretical and numerical calculations, further proving the cavity-based concept.
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