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@inproceedings{zimmermann:ipac2021-tupab027,
  author       = {F. Zimmermann and R.W. Aßmann and M. Bai and G. Franchetti},
  title        = {{Review of Accelerator Limitations and Routes to Ultimate Beams}},
  booktitle    = {Proc. IPAC'21},
  pages        = {1397--1400},
  eid          = {TUPAB027},
  language     = {english},
  keywords     = {collider, acceleration, electron, luminosity, photon},
  venue        = {Campinas, SP, Brazil},
  series       = {International Particle Accelerator Conference},
  number       = {12},
  publisher    = {JACoW Publishing, Geneva, Switzerland},
  month        = {08},
  year         = {2021},
  issn         = {2673-5490},
  isbn         = {978-3-95450-214-1},
  doi          = {10.18429/JACoW-IPAC2021-TUPAB027},
  url          = {https://jacow.org/ipac2021/papers/tupab027.pdf},
  note         = {https://doi.org/10.18429/JACoW-IPAC2021-TUPAB027},
  abstract     = {{Various physical and technology-dependent limits are encountered for key performance parameters of accelerators such as high-gradient acceleration, high-field bending, beam size, beam brightness, beam intensity and luminosity. This paper will review these limits and the associated challenges. Possible figures-of-merit and pathways to ultimate colliders will also be explored.}},
}