TY  - JOUR
AU  - Ackermann, Sven
AU  - Faatz, Bart
AU  - Grattoni, Vanessa
AU  - Kazemi, Mehdi Mohammad
AU  - Lang, Tino
AU  - Lechner, Christoph
AU  - Paraskaki, Georgia
AU  - Zemella, Johann
AU  - Geloni, Gianluca
AU  - Serkez, Svitozar
AU  - Tanikawa, Takanori
AU  - Hillert, Wolfgang
TI  - Novel Method for the Generation of Stable Radiation from Free-Electron Lasers at High Repetition Rates
JO  - Physical review accelerators and beams
VL  - 23
IS  - 7
SN  - 2469-9888
CY  - College Park, MD
PB  - American Physical Society
M1  - PUBDB-2020-02865
SP  - 071302
PY  - 2020
N1  - Da es sich um ein Design bzw. Theoriepapier handelt, entfällt die Auswahlneines Experiments. bEmpfangen 17.4., Akzeptiert 17.7.  Publiziert 29.7., Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.
AB  - For more than a decade free-electron lasers (FELs) have been in operation, providing scientists from many disciplines with the benefits of ultrashort, nearly transversely coherent radiation pulses with wavelengths down to the Ångstrom range. If no further techniques are applied, the FEL will only amplify radiation from the stochastic distributed electron density in the electron bunch. Contemporary developments aim at producing stable and single-mode radiation by preparing an electron bunch with favorable longitudinal electron density distributions using magnets and conventional laser pulses (seed), hence the name “seeding.” In recent years, short wavelength FELs at high electron beam energies and high repetition rates were proposed and built. At those repetition rates, an external seed with sufficient power to manipulate the electron beam cannot be provided by present state-of-the-art laser systems, thus no external seeding scheme could be applied yet. In this paper, we present ways to seed FELs to generate short wavelength radiation at high repetition rates, making use of tested electron beam manipulation schemes. For our parameter study, we used the parameters of FLASH, the free-electron laser in Hamburg. First simulations are presented, showing the feasibility of the method proposed.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000619085100001
DO  - DOI:10.1103/PhysRevAccelBeams.23.071302
UR  - https://bib-pubdb1.desy.de/record/442081
ER  -