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APS » Journals » Phys. Rev. Lett. » Volume 88 » Issue 7
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Phys. Rev. Lett. 88, 074802 (2002) [4 pages]

Measurements of Harmonic Wake Fields Excited by Rough Surfaces

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M. Hüning1, H. Schlarb2, P. Schmüser3, and M. Timm4
1RWTH Aachen-Physikzentrum, Physikalisches Institut IIIa, Sommerfeldstrasse 26-28, D-52056 Aachen, Germany
2DESY, Notkestrasse 85, D-22607 Hamburg, Germany
3Universität Hamburg, Institut für Experimentalphysik, Notkestrasse 85, D-20607 Hamburg, Germany
4TU Darmstadt, TEMF, Schlossgartenstrasse 8, D-64289 Darmstadt, Germany

Received 16 October 2001; revised 21 December 2001; published 4 February 2002

An experiment has been carried out at the TESLA Test Facility linac to investigate the wake fields generated by picosecond electron bunches in narrow beam pipes with an artificially roughened inner surface. The energy structure imposed on the bunches by the wake fields has been analyzed with a magnetic spectrometer. Strong harmonic-wake-field effects are observed as expected from simulations in which the rough surface is modeled by a dielectric layer.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.074802
DOI:
10.1103/PhysRevLett.88.074802
PACS:
41.60.Cr, 29.17.+w, 41.85.Ew
 
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