Phys. Rev. ST Accel. Beams 9, 092801 (2006) [12 pages]Longitudinal electron bunch profile diagnostics at 45 MeV using coherent Smith-Purcell radiation
We have used coherent Smith-Purcell radiation in order to investigate the longitudinal (temporal) profile of the electron bunch at the FELIX facility. Detection of the far-infrared radiation was achieved by a simple and compact experimental arrangement, consisting of an array of 11 room-temperature pyroelectric detectors. Accurate determination of the background radiation, use of high quality optical filters, and an efficient light collection system are essential for this type of experiment. The radiated power is in good agreement with the predictions of the surface current description of this process. It is concluded that 90% of the bunch particles are contained within 5.5 ps, with a temporal profile that could be approximately triangular in shape. This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.9.092801
DOI:
10.1103/PhysRevSTAB.9.092801
PACS:
41.60.−m, 41.85.Ew, 07.57.−c, 41.75.Ht
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