Phys. Rev. Lett. 103, 144802 (2009) [4 pages]Transverse-Longitudinal Coupling Effect in Laser Bunch SlicingReceived 27 May 2009; published 1 October 2009 We report turn-by-turn observation of coherent synchrotron radiation (CSR) produced by the laser bunch slicing technique at an electron storage ring operated with a small momentum compaction factor. CSR emission was intermittent, and its interval depended strongly on the betatron tune. This peculiar behavior of the CSR could be interpreted as a result of coupling between the transverse and longitudinal motion of the electrons. This is the first observation of such an effect, which would be important not only for controlling the CSR emission but also for generating and transporting ultrashort electron bunches or electron bunches with microdensity structures in advanced accelerators. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.144802
DOI:
10.1103/PhysRevLett.103.144802
PACS:
41.60.Ap, 07.57.Hm, 29.27.Bd
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