IPAC2011 - List of Authors (Schoeps, A.)

Paper	Title	Page
THPC156	Performance of the PETRA III APPLE II Undulator	3254
	J. Bahrdt, W. Frentrup, A. Gaupp, M. Scheer HZB, Berlin, Germany K. Balewski, J. Keil, A. Schöps, M. Tischer DESY, Hamburg, Germany
	A 5m-long APPLE II undulator has been built in collaboration between Helmholtz-Zentrum Berlin and DESY Hamburg. Magnetic field measurements after the final shimming in the laboratory are presented. The device has been installed in the storage ring and machine studies have been performed. The tune shifts in the elliptical and the inclined mode are in agreement with predictions from theory. The dynamic field integrals have successfully been minimized in the storage ring with so-called L-shims (rectangular iron sheets) which are placed at the undulator center at the magnet edges.

Paper

Title

Page

Performance of the PETRA III APPLE II Undulator

3254

J. Bahrdt, W. Frentrup, A. Gaupp, M. Scheer
HZB, Berlin, Germany
K. Balewski, J. Keil, A. Schöps, M. Tischer
DESY, Hamburg, Germany

A 5m-long APPLE II undulator has been built in collaboration between Helmholtz-Zentrum Berlin and DESY Hamburg. Magnetic field measurements after the final shimming in the laboratory are presented. The device has been installed in the storage ring and machine studies have been performed. The tune shifts in the elliptical and the inclined mode are in agreement with predictions from theory. The dynamic field integrals have successfully been minimized in the storage ring with so-called L-shims (rectangular iron sheets) which are placed at the undulator center at the magnet edges.