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@inproceedings{margraf:ipac2020-wevir03,
author = {R.A. Margraf and Z. Huang and J.P. MacArthur and G. Marcus},
title = {{Microbunch Rotation as an Outcoupling Mechanism for Cavity-based X-Ray Free Electron Lasers}},
booktitle = {Proc. IPAC'20},
pages = {35--39},
eid = {WEVIR03},
language = {english},
keywords = {FEL, electron, quadrupole, cavity, undulator},
venue = {Caen, France},
series = {International Particle Accelerator Conference},
number = {11},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {06},
year = {2020},
issn = {2673-5490},
isbn = {978-3-95450-213-4},
doi = {10.18429/JACoW-IPAC2020-WEVIR03},
url = {https://jacow.org/ipac2020/papers/wevir03.pdf},
abstract = {{Electron bunches in an undulator develop periodic density fluctuations, or microbunches, which enable the exponential gain of power in an X-ray free-electron laser (XFEL). For certain applications, one would like to preserve this microbunching structure of the electron bunch as it experiences a dipole kick which bends its trajectory. This process, called microbunch rotation, rotates the microbunches and aligns them perpendicular to the new direction of electron travel. Microbunch rotation was demonstrated experimentally by MacArthur et al. with soft x-rays* and additional unpublished data demonstrated microbunch rotation with hard x-rays. Further investigations into the magnetic lattice used to rotate these microbunches showed that microbunches can be rotated using an achromatic lattice with a small R56, connecting this technique to earlier studies of achromatic bends. Here, we propose and study a practical way to rotate Angstrom-level microbunching as an out-coupling mechanism for the Optical Cavity-Based X-ray FEL (CBXFEL) project at SLAC.}},
}