APS : Bright Ångstrom and picometer free electron laser based on the Large Hadron electron Collider energy recovery linac

Nergiz, Z.; Zimmermann, F.; Mirian, N.S.; Zhou, D.; Aksoy, A.; Aksakal, H.

doi:10.1103/PhysRevAccelBeams.24.100701

Article
Report number	arXiv:2107.13331
Title	Bright Ångstrom and picometer free electron laser based on the Large Hadron electron Collider energy recovery linac
Related title	Bright Ångstrom and Picometre Free Electron Laser Based on the LHeC Energy Recovery Linac
Author(s)	Nergiz, Z. (Nigde U.) ; Mirian, N.S. (CERN ; DESY) ; Aksoy, A. (Ankara U.) ; Zhou, D. (KEK, Tsukuba) ; Zimmermann, F. (CERN) ; Aksakal, H. (Kahramanmaras U.)
Publication	2021-10-01
Imprint	2021-07-28
Number of pages	13
Note	13 pages, 13 figures, submitted to Physical Review Accelerators and Beams (PRAB)
In:	Phys. Rev. Accel. Beams 24 (2021) 100701
DOI	10.1103/PhysRevAccelBeams.24.100701 (publication)
Subject category	hep-ex ; Particle Physics - Experiment ; physics.acc-ph ; Accelerators and Storage Rings
Study	CERN LHeC
Abstract	The Large Hadron electron Collider (LHeC) is a proposed future particle-physics project colliding 60 GeV electrons from a six-pass recirculating energy-recovery Linac (ERL) with 7 TeV protons stored in the LHC. The ERL technology allows for much higher beam current and, therefore, higher luminosity than a traditional Linac. The high-current, high-energy electron beam can also be used to drive a free electron laser (FEL). In this study, we investigate the performance of an LHeC-based FEL, operated in the self-amplified spontaneous emission mode using electron beams after one or two turns, with beam energies of, e.g., 10, 20, 30 and 40 GeV, and aim at producing X-ray pulses at wavelengths ranging from 8 Å to 0.5 Å . In addition, we explore a possible path to use the 40 GeV electron beam for generating photon pulses at much lower wavelengths, down to a few picometre. We demonstrate that such ERL-based high-energy FEL would have the potential to provide orders of magnitude higher average brilliance at Å wavelengths than any other FEL either existing or proposed. It might also allow a pioneering step into the picometre wavelength regime.
Copyright/License	publication: © 2021-2024 authors (License: CC BY 4.0) preprint: (License: CC BY 4.0)

$CSR wake field for a Gaussian bunch with 50 micron bunch length (left) and impedance (right) for a 4-m long arc dipole with $\rho=744$~m computed by the code CSRZ \cite{zhoujjap} for a square beam pipe with 2 cm (blue) or 1 cm full aperture (red) in the horizontal and vertical direction, compared with the CSR wake and impedance calculated for a simple parallel plate model with a vertical gap of 2 cm (green). In the right picture, solid lines refer to the real part, dashed lines to the imaginary part of the impedance.$ $CSR wake field for a Gaussian bunch with 50 micron bunch length (left) and impedance (right) for a 4-m long arc dipole with $\rho=744$~m computed by the code CSRZ \cite{zhoujjap} for a square beam pipe with 2 cm (blue) or 1 cm full aperture (red) in the horizontal and vertical direction, compared with the CSR wake and impedance calculated for a simple parallel plate model with a vertical gap of 2 cm (green). In the right picture, solid lines refer to the real part, dashed lines to the imaginary part of the impedance.$ Show more plots

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Record created 2021-08-04, last modified 2023-11-24

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