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@inproceedings{karabekyan:ipac2021-tupab122,
author = {S.K. Karabekyan and S. Abeghyan and M. Bagha-Shanjani and A. Block and M. Brügger and M. Calvi and S. Casalbuoni and S. Danner and W. Decking and U. Englisch and R. Ganter and G. Geloni and N. Golubeva and J. Grünert and S. Hauf and C. Holz and L. Huber and A. Keller and D.E. Kim and K. Knebel and D. La Civita and T. Ladwig and J. Laksman and D.L. Lenz and Y. Li and D. Lipka and D. Mamchyk and R. Mattusch and N. Mildner and E. Negodin and D. Nölle and M.P. Planas and F. Preisskorn and J. Prenting and F. Saretzki and M. Schlösser and M.S. Schmidt and T. Schmidt and F. Schmidt-Föhre and E. Schneidmiller and S. Serkez and H. Sinn and D. Thoden and A. Violante and T. Wamsat and G. Wellenreuther and S. Wendt and T. Wilksen and T. Wohlenberg and M. Wuenschel and M. Yakopov and C. Youngman and M.V. Yurkov},
% author = {S.K. Karabekyan and S. Abeghyan and M. Bagha-Shanjani and A. Block and M. Brügger and M. Calvi and others},
% author = {S.K. Karabekyan and others},
title = {{SASE3 Variable Polarization Project at the European XFEL}},
booktitle = {Proc. IPAC'21},
pages = {1678--1680},
eid = {TUPAB122},
language = {english},
keywords = {undulator, polarization, vacuum, FEL, electron},
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-TUPAB122},
url = {https://jacow.org/ipac2021/papers/tupab122.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-TUPAB122},
abstract = {{At the European XFEL, two undulator systems for hard and one for soft X-rays have been successfully put into operation. The SASE3 soft X-ray undulator system generates linearly polarized radiation in the horizontal plane. One of the requirements for extending the radiation characteristics is the ability to obtain different polarization modes. These include both right and left circular, elliptical polarization, or linear polarization at an arbitrary angle. For this purpose, a system consisting of four APPLE X helical undulators developed at the Paul Scherrer Institute (PSI) is used. This paper presents the design parameters of the SASE3 undulator system after modifying it with the helical afterburner. It also describes the methods and the design solutions different from those used at PSI. The status and schedule of the project are introduced.}},
}