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Observation of two-dimensional longitudinal-transverse correlations in an electron beam by laser-electron interactions
Stockholm University, Faculty of Science, Department of Physics.
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2008 (English)In: Physical Review Special Topics. Accelerators and Beams, ISSN 1098-4402, Vol. 11, no 7, 70702Article in journal (Refereed) Published
Abstract [en]

During the preparatory work for the optical-replica synthesizer experiment in the free-electron laser FLASH at DESY, we were able to superimpose a short, approximately 200 fs long pulse from a frequencydoubled mode-locked erbium laser with titanium-sapphire amplifier and an approximately 20 ps long electron bunch in an undulator. This induces an energy modulation in a longitudinal slice of the electron bunch. A magnetic chicane downstream of the undulator converts the energy modulation into a density modulation within the slice that causes the emission of coherent optical transition radiation from a silver-coated silicon screen. Varying the relative timing between electron and laser, we use a camera to record two-dimensional images of the slices as a function of the longitudinal position within the electron bunch.

Place, publisher, year, edition, pages
2008. Vol. 11, no 7, 70702
Keyword [en]
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Physical Sciences
URN: urn:nbn:se:su:diva-57904DOI: 10.1103/PhysRevSTAB.11.070702ISI: 000259352700003OAI: diva2:418564

authorCount :15

Available from: 2011-05-23 Created: 2011-05-23 Last updated: 2015-07-29Bibliographically approved

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Salén, Petervan der Meulen, PeterHamberg, MathiasLarsson, Mats
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