Bonn 2010 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 71: Beschleunigerphysik X
HK 71.3: Talk
Friday, March 19, 2010, 14:30–14:45, HG ÜR 8
Design and assembly of a strong focusing undulator — •Carlo Frevert1,2, Sebastian Raith1,2, Andreas R. Maier1,2, Stefan Becker1,2, and Florian Grüner1,2 — 1Department for Physik, Ludwig-Maximilians-Universität, Am Coulombwall 1, 85748 Garching, Germany — 2Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany
Highly-tuned permanent magnetic quadrupoles (TPMQs) can be used for an intrinsically strong-focusing undulator. Alternating focusing / defocusing TPMQs impose an overall focusing effect on the electron beam. By tranversally shifting the individual TPMQs, a dipole field component exerts a force upon the whole beam, leading to an undulating motion. The focusing effect keeps the electron beam size stable for an arbitrary length of the undulator.
We present a design study of an undulator with a matched beam size of 20µ m and report on the progress of a first prototype currently being built.