@article{Transverse:6416,
      recid = {6416},
      author = {Li, Yuan Shen},
      title = {Transverse Gradient Undulator in a Storage Ring Free  Electron Laser Oscillator},
      publisher = {University of Chicago},
      school = {Ph.D.},
      address = {2023-06},
      abstract = {Accelerator-driven light sources, such as electron storage  rings (SRs) and free-electron lasers (FELs), are valuable  instruments of scientific discovery thanks to their  unparalleled ability to produce extremely bright beams of  X-ray light. In this thesis, we will discuss the  implementation of the storage ring X-ray FEL oscillator  (SRXFELO). The SRXFELO has the potential to combine the  strengths of the SR and FEL, thereby surpassing the  performance of both in terms of average photon brightness  and coherence. Our analysis will be based on a mix of  theory and simulation. We begin by discussing the  foundational physics of SRs and FELs. We then zoom in on  the theoretical basis of the transverse gradient undulator  (TGU) as a method to mitigate the SR energy spread  deficiency. Next, we construct a custom simulation  framework in order to model the SRXFELO from start to end.  We use this framework to simulate a hypothetical SRXFELO  design based on realistic machine parameters, and report on  projected performance and implementation strategies.  Finally, we examine challenges associated with the X-ray  cavity, such as beam alignment and optical phase purity, in  the context of the Cavity-based X-ray FEL (CBXFEL)  experiment located at SLAC.},
      url = {http://knowledge.uchicago.edu/record/6416},
      doi = {https://doi.org/10.6082/uchicago.6416},
}