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|a 10.1107/S1600577523006586
|2 doi
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|a pubmed24n1547.xml
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|a (DE-627)NLM361140223
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|a (NLM)37615636
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Yang, X
|e verfasserin
|4 aut
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|a Toward a fully coherent tender and hard X-ray free-electron laser via cascaded EEHG in fourth-generation synchrotron light sources
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 24.09.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a open access.
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|a Free-electron-laser-based beamlines utilize fully coherent laser pulses with extremely narrow bandwidth allowing direct use of X-rays without monochromators. This could be very beneficial for all users of current and future fourth-generation diffraction-limited synchrotron light sources (DL-SLSs) who need narrowband full-coherence high-brightness X-ray pulses. Based on our previous finding, i.e. that separating the two stages of echo-enabled harmonic generation (EEHG) with a few extra bending-magnet sections provides an effective way to increase the momentum compaction of chicane 1, one can simultaneously achieve adequate prebunching at extremely high harmonics as well as keep the energy modulation to the ideal minimum. This could open the door for cascaded EEHG, toward fully coherent tender and hard X-ray wavelengths. Built on our compact design of a twin-pulse seeding electron beam with an adjustable delay and timing jitter at the level of a few femtoseconds, a cascaded EEHG can be implemented, which includes two EEHG beamlines, where the radiation pulse generated by the first beamline with harmonic h1 could be used as the input seed laser pulse to the second beamline with harmonic h2. Hence, the second radiator could potentially reach very high harmonics [h = h1(20)h2(25-100)] from 500 to 2000, corresponding to tender and hard X-ray wavelengths. It is demonstrated that the cascaded EEHG scheme is compatible with almost any current or planned fourth-generation DL-SLS, with significant benefits for space-limited storage rings in particular. The main advantage is that this scheme requires almost no change of the storage-ring lattice and is fully compatible with other beamlines. Current proposals for rings with much longer straight sections would add self-amplified spontaneous emission as another viable option for storage-ring-based free-electron lasers
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|a Journal Article
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|a SASE and XFEL oscillators
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|a cascaded echo-enabled harmonic generation
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|a coherent radiation
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|a diffraction-limited synchrotron light sources
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|a storage-ring-based free-electron lasers
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|a Yu, L H
|e verfasserin
|4 aut
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|a Smaluk, V
|e verfasserin
|4 aut
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|a Shaftan, T
|e verfasserin
|4 aut
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|a Huang, X
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of synchrotron radiation
|d 1994
|g 30(2023), Pt 5 vom: 01. Sept., Seite 861-875
|w (DE-627)NLM09824129X
|x 1600-5775
|7 nnns
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| 773 |
1 |
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|g volume:30
|g year:2023
|g number:Pt 5
|g day:01
|g month:09
|g pages:861-875
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|u http://dx.doi.org/10.1107/S1600577523006586
|3 Volltext
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|d 30
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|h 861-875
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