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- Eriksson, Mikael, et al.
(author)
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The MAX IV Facility
- 2013
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In: 11th International Conference on Synchrotron Radiation Instrumentation (SRI 2012). - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 425
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Conference paper (peer-reviewed)abstract
- The MAX IV synchrotron radiation facility is currently being constructed in Lund, Sweden. The accelerator park consists of a 3 GeV linac injector and 2 storage rings operated at 1.5 and 3 GeV respectively. The linac injector will also be used for the generation of short Xray pulses. Close to 30 straight sections will be available for IDs at the rings. The three machines mentioned above are described below with some emphasis on the effort to create a very small emittance in the 3 GeV ring. Some unconventional technical solutions imposed by the emittance minimisation are discussed.
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- Cutic, Nino, et al.
(author)
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Vacuum ultraviolet circularly polarized coherent femtosecond pulses from laser seeded relativistic electrons
- 2011
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In: Physical Review Special Topics. Accelerators and Beams. - 1098-4402. ; 14:3
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Journal article (peer-reviewed)abstract
- We have demonstrated the generation of circularly polarized coherent light pulses at 66 nm wavelength by combining laser seeding at 263 nm of a 375 MeV relativistic electron bunch with subsequent coherent harmonic generation from an elliptical undulator of APPLE-II type. Coherent pulses at higher harmonics in linear polarization have been produced and recorded up to the sixth order (44 nm). The duration of the generated pulses depends on the temporal overlap of the initial seed laser pulse and the electron bunch and was on the order of 200 fs. Currently, this setup is the only source worldwide producing coherent fs-light pulses with variable polarization in the vacuum ultraviolet.
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| 9. |
- Erny, Christian, et al.
(author)
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Metrology of high-order harmonics for free-electron laser seeding
- 2011
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In: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 13
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Journal article (peer-reviewed)abstract
- We examine the characteristics of high-order harmonics generated with 800 nm, 25 mJ, 160 fs laser pulses in an Ar gas cell with the objective of seeding a free electron laser. We measure the energy per pulse and per harmonic, the energy jitter, the divergence and the position stability of the harmonic beam. We perform ab initio numerical simulations based on integration of the time-dependent Schrodinger equation and of the wave equation within the slowly varying envelope approximation. The results reproduce the experimental measurements to better than a factor of two. The interaction of a frequency comb of harmonic fields with an electron bunch in an undulator is examined with a simple model consisting of calculating the energy modulation owing to the seed-electron interaction. The model indicates that the undulator acts as a spectral filter selecting a given harmonic.
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| 10. |
- Mauritsson, Johan, et al.
(author)
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Laserteknik berättar elektronernas dramatik
- 2010
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In: Fysikaktuellt. - 0283-9148. ; :4, s. 10-10
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Journal article (pop. science, debate, etc.)abstract
- Attofysik handlar om att öppna ögonen för en värld som vi länge vetat fanns men fram till nu inte har kunnat se – elektronernas värld. En värld av ofattbart små och snabba förlopp och fenomen. Utvecklingen av lasertekniken har kommit så långt att vi faktiskt har möjlighet att studera den världen.
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