Optimisation of an HHG-seeded harmonic cascade FEL design for the NLS project

Optimisation studies of an HHG-seeded harmonic cascade FEL design for the UK's proposed New Light Source (NLS) facility [1] are presented. Three separate FELs are planned to meet the requirements for continuous coverage of the photon energy range 50-1000 eV with variable polarisation, 20 fs pul...

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Main Authors: Dunning, D, Thompson, N, McNeil, B, Bartolini, R, Huang, Z, Geng, H
Format: Journal article
Language:English
Published: 2010
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author Dunning, D
Thompson, N
McNeil, B
Bartolini, R
Huang, Z
Geng, H
author_facet Dunning, D
Thompson, N
McNeil, B
Bartolini, R
Huang, Z
Geng, H
author_sort Dunning, D
collection OXFORD
description Optimisation studies of an HHG-seeded harmonic cascade FEL design for the UK's proposed New Light Source (NLS) facility [1] are presented. Three separate FELs are planned to meet the requirements for continuous coverage of the photon energy range 50-1000 eV with variable polarisation, 20 fs pulse widths and good temporal coherence. The design uses an HHG seed source tuneable from 50-100 eV to provide direct FEL seeding in this range, and one or two stage harmonic cascades to reach the higher photon energies. Studies have been carried out to optimise a harmonic cascade FEL operating at 1 keV; topics investigated include modulator configuration, seed power level and effects of the HHG seed structure. FEL simulations using realistic electron beam distributions are presented and tolerance to increased emittance has been considered.
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spelling oxford-uuid:388106ed-1252-4b53-8e0f-9f1c746b25e02022-03-26T13:50:23ZOptimisation of an HHG-seeded harmonic cascade FEL design for the NLS projectJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:388106ed-1252-4b53-8e0f-9f1c746b25e0EnglishSymplectic Elements at Oxford2010Dunning, DThompson, NMcNeil, BBartolini, RHuang, ZGeng, HOptimisation studies of an HHG-seeded harmonic cascade FEL design for the UK's proposed New Light Source (NLS) facility [1] are presented. Three separate FELs are planned to meet the requirements for continuous coverage of the photon energy range 50-1000 eV with variable polarisation, 20 fs pulse widths and good temporal coherence. The design uses an HHG seed source tuneable from 50-100 eV to provide direct FEL seeding in this range, and one or two stage harmonic cascades to reach the higher photon energies. Studies have been carried out to optimise a harmonic cascade FEL operating at 1 keV; topics investigated include modulator configuration, seed power level and effects of the HHG seed structure. FEL simulations using realistic electron beam distributions are presented and tolerance to increased emittance has been considered.
spellingShingle Dunning, D
Thompson, N
McNeil, B
Bartolini, R
Huang, Z
Geng, H
Optimisation of an HHG-seeded harmonic cascade FEL design for the NLS project
title Optimisation of an HHG-seeded harmonic cascade FEL design for the NLS project
title_full Optimisation of an HHG-seeded harmonic cascade FEL design for the NLS project
title_fullStr Optimisation of an HHG-seeded harmonic cascade FEL design for the NLS project
title_full_unstemmed Optimisation of an HHG-seeded harmonic cascade FEL design for the NLS project
title_short Optimisation of an HHG-seeded harmonic cascade FEL design for the NLS project
title_sort optimisation of an hhg seeded harmonic cascade fel design for the nls project
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AT thompsonn optimisationofanhhgseededharmoniccascadefeldesignforthenlsproject
AT mcneilb optimisationofanhhgseededharmoniccascadefeldesignforthenlsproject
AT bartolinir optimisationofanhhgseededharmoniccascadefeldesignforthenlsproject
AT huangz optimisationofanhhgseededharmoniccascadefeldesignforthenlsproject
AT gengh optimisationofanhhgseededharmoniccascadefeldesignforthenlsproject