Speaker
Description
We present results from the commissioning of the X-ray optics motion and photon diagnostics systems for the cavity-based X-ray free-electron laser (CBXFEL) project, a partnership among Argonne National Laboratory (ANL), SLAC National Accelerator Laboratory, and RIKEN SPring-8. The project aims to demonstrate CBXFEL technology using X-rays produced in the first seven hard X-ray undulators of the Linac Coherent Light Source (LCLS). The CBXFEL X-ray optics positioning [1] and diagnostic [2] components have now been installed in the LCLS undulator tunnel and are currently undergoing commissioning. This work focuses on evaluating the performance of the X-ray nanopositioning system and the multiple diagnostic elements distributed throughout the X-ray cavity. Highlighted results include characterization of beam intensity and position diagnostics, multi-axis motion assessment of the X-ray optics for stable operation while maintaining the crystals’ diffraction condition, and joint operation of these subsystems to enable continuous photon transport over multiple round trips within the X-ray cavity.
[1] Deming Shu, et al. "Design of the nanopositioning and mechanical system for cavity-based X-ray free electron laser". J. Phys.: Conf. Ser. 2022 2380}012029. DOI 10.1088/1742-6596/2380/1/012029
[2] Peifan Liu, et al. "X-ray diagnostics for the cavity-based x-ray free-electron laser project" Phys. Rev. Accel. Beams, 27 (2024) 110701
DOI: 10.1103/PhysRevAccelBeams.27.110701
Funding Agency
This work is supported by U.S. Department of Energy Contract No. DE-AC02-76SF00515.
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