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@inproceedings{fallahi:ipac2021-thxb07,
author = {A. Fallahi and N. Kuster and L. Novotny},
title = {{Coherent Radiation From Inverse Compton Scattering Sources by Means of Particle Trapping}},
booktitle = {Proc. IPAC'21},
pages = {3732--3734},
eid = {THXB07},
language = {english},
keywords = {electron, laser, radiation, undulator, FEL},
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-THXB07},
url = {https://jacow.org/ipac2021/papers/thxb07.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-THXB07},
abstract = {{Inverse Compton scattering (ICS) sources are one of the promising compact tools to generate short wavelength radiation from electron beams based on the relativistic Doppler effect. Nonetheless, these sources suffer from a few shortcomings such as incoherent radiation and low-efficiency in radiation generation. This contribution presents a novel scheme based on the scattering of an optical beam from a trapped electron beam inside an optical cavity. Inverse-Compton scattering off both free and trapped electrons are simulated using a full-wave solution of first-principle equations based on FDTD/PIC in the co-moving frame of electron beams. It is shown that the strong space-charge effect in low-energies is the main obstacle in acquiring coherent gain through the ICS mechanism. Subsequently, it is shown that by trapping the electron beam to the high-intensity spots, the space-charge effect is compensated, and additionally, the ultrahigh charge density enables high FEL-gain at trapping spots, thereby augmenting the coherence of the output radiation and concurrently increasing the source efficiency by three orders of magnitude.}},
}