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T: Teilchenphysik

T 410: Beschleuniger III

T 410.4: Talk

Wednesday, March 29, 2006, 17:15–17:30, C2-03-527

Phase error reduction of superconductive undulators — •Daniel Wollmann — Laboratorium für Applikationen der Synchrotronstrahlung, Universität Karlsruhe

Present synchrotron light sources make extensive use of insertion devices like wigglers, undulators or wavelength shifters. Among these, undulators are the most advanced sources of highly brilliant X-rays. Besides permanent magnet undulators, which are state of the art, superconductive undulators have been developed over the last 15 years.

The spectral properties of the synchrotron radiation produced with an undulator depend mainly on the quality of the magnetic field, which is quantified by the phase error. Therefore, concepts of phase error correction, the so-called shimming, have to be investigated for superconductive undulators.

In this contribution an electrical shimming concept for superconductive undulators will be discussed.

(This work is supported by the BMBF grant ESAN05013603 and the EU grant RII3-CT-2004-506008)