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@inproceedings{gerth:ipac2021-tupab111,
author = {C. Gerth and E. Allaria and A. Choudhuri and L. Schaper and E. Schneidmiller and S. Schreiber and M. Tischer and P. Vagin and M. Vogt and L. Winkelmann and M.V. Yurkov and J. Zemella},
% author = {C. Gerth and E. Allaria and A. Choudhuri and L. Schaper and E. Schneidmiller and S. Schreiber and others},
% author = {C. Gerth and others},
title = {{Layout of the Laser Heater for FLASH²⁰²⁰⁺}},
booktitle = {Proc. IPAC'21},
pages = {1647--1650},
eid = {TUPAB111},
language = {english},
keywords = {electron, laser, undulator, FEL, free-electron-laser},
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-TUPAB111},
url = {https://jacow.org/ipac2021/papers/tupab111.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-TUPAB111},
abstract = {{The major upgrade FLASH²⁰²⁰⁺ of the FEL user facility FLASH includes an improved injector layout for the generation of the high-brightness electron beam as well as an externally seeded FEL beamline. Microbunching gain of initial modulations or shot-noise fluctuations degrade the electron beam quality, which is in particular harmful to the external seed process. To minimize the microbunching gain by a controlled increase of the uncorrelated energy spread, the installation of a laser heater is foreseen directly upstream of the first bunch compression chicane. In this paper, we present the layout of the laser heater section, which follows the original proposal published almost 20 years ago and differs in several aspects from the common layout implemented at many other FEL facilities. The considerations that have been made for the optimisation of the laser heater parameters are described in detail.}},
}