Tailoring of the longitudinal phase space for improved Free-Electron Laser performance
(2023) In Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1057.- Abstract
Free-electron lasers are capable of producing high-quality radiation in a wide wavelength range and at very high power and brilliance. To reach improved performance especially regarding coherence, bandwidth and wavelength stability, different seeding techniques are often required. However, a successful implementation of seeding typically demands a very high-quality electron beam, in terms of energy distribution and emittance. Techniques like Echo-Enabled Harmonic Generation (EEHG) and High-Brightness SASE (HB-SASE) require, or are significantly enhanced, by a flat distribution of particles in the longitudinal phase space. In this paper we describe how the initially chirped longitudinal phase space in the proposed Soft X-ray Laser (SXL)... (More)
Free-electron lasers are capable of producing high-quality radiation in a wide wavelength range and at very high power and brilliance. To reach improved performance especially regarding coherence, bandwidth and wavelength stability, different seeding techniques are often required. However, a successful implementation of seeding typically demands a very high-quality electron beam, in terms of energy distribution and emittance. Techniques like Echo-Enabled Harmonic Generation (EEHG) and High-Brightness SASE (HB-SASE) require, or are significantly enhanced, by a flat distribution of particles in the longitudinal phase space. In this paper we describe how the initially chirped longitudinal phase space in the proposed Soft X-ray Laser (SXL) at the MAX IV laboratory can be tailored by first overcompressing and then de-chirping the electron pulse. We also show that it is possible to retain the properties of the electron bunch and how such an enhanced distribution can drive HB-SASE “seeding”, resulting in a significantly reduced bandwidth and a better wavelength stability.
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- author
- Pirani, Saeid LU ; Curbis, Francesca LU ; Pop, Mihai LU and Werin, Sverker LU
- organization
- publishing date
- 2023-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- De-chirper, Free-Electron Laser, Longitudinal phase space, Overcompression
- in
- Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- volume
- 1057
- article number
- 168696
- publisher
- Elsevier
- external identifiers
-
- scopus:85172468927
- ISSN
- 0168-9002
- DOI
- 10.1016/j.nima.2023.168696
- language
- English
- LU publication?
- yes
- id
- 5b6aa40d-825a-41fa-a216-776fa40bef9e
- date added to LUP
- 2023-10-27 11:48:24
- date last changed
- 2024-04-04 11:26:50
@article{5b6aa40d-825a-41fa-a216-776fa40bef9e, abstract = {{<p>Free-electron lasers are capable of producing high-quality radiation in a wide wavelength range and at very high power and brilliance. To reach improved performance especially regarding coherence, bandwidth and wavelength stability, different seeding techniques are often required. However, a successful implementation of seeding typically demands a very high-quality electron beam, in terms of energy distribution and emittance. Techniques like Echo-Enabled Harmonic Generation (EEHG) and High-Brightness SASE (HB-SASE) require, or are significantly enhanced, by a flat distribution of particles in the longitudinal phase space. In this paper we describe how the initially chirped longitudinal phase space in the proposed Soft X-ray Laser (SXL) at the MAX IV laboratory can be tailored by first overcompressing and then de-chirping the electron pulse. We also show that it is possible to retain the properties of the electron bunch and how such an enhanced distribution can drive HB-SASE “seeding”, resulting in a significantly reduced bandwidth and a better wavelength stability.</p>}}, author = {{Pirani, Saeid and Curbis, Francesca and Pop, Mihai and Werin, Sverker}}, issn = {{0168-9002}}, keywords = {{De-chirper; Free-Electron Laser; Longitudinal phase space; Overcompression}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment}}, title = {{Tailoring of the longitudinal phase space for improved Free-Electron Laser performance}}, url = {{http://dx.doi.org/10.1016/j.nima.2023.168696}}, doi = {{10.1016/j.nima.2023.168696}}, volume = {{1057}}, year = {{2023}}, }