Karlsruhe 2011 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 81: Strahldiagnose / CSR II

T 81.10: Vortrag

Dienstag, 29. März 2011, 19:00–19:15, 30.22: 022

EEHG at DELTA — •Robert Molo, Holger Huck, Andreas Schick, and Shaukat Khan — TU Dortmund, Zentrum für Synchrotronstrahlung/DELTA, Maria Goeppert-Mayer Str. 2, 44221 Dortmund, Germany

We present first studies of the realization of the echo-enabled harmonic generation (EEHG) technique proposed by G. Stupakov [1] as an upgrade of the present coherent harmonic generation (CHG) project at the DELTA storage ring. The generation of short wavelengths with CHG is limited to harmonic numbers of approximately 7. Using the EEHG scheme one can easily reach e. g. the 24th harmonic. In addition to the optical klystron used for CHG, a third undulator is needed for a second energy modulation of the electron bunch, which is followed by an additional strong dispersive section. The architecture of the DELTA storage ring allows for the realization of this technique due to some presently unused space upstream of the optical klystron.

[1] G. Stupakov, Phys. Rev. Lett. 102, 074801 (2009)