Observation of two-dimensional longitudinal-transverse correlations in an electron beam by laser-electron interactions
2008 (English)In: Physical Review Special Topics. Accelerators and Beams, ISSN 1098-4402, Vol. 11, no 7, 70702Article in journal (Refereed) Published
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
IdentifiersURN: urn:nbn:se:su:diva-57904DOI: 10.1103/PhysRevSTAB.11.070702ISI: 000259352700003OAI: oai:DiVA.org:su-57904DiVA: diva2:418564
authorCount :152011-05-232011-05-232015-07-29Bibliographically approved