PAC09 - List of Authors (Walter, W.)

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Walter, W.

Paper	Title	Page
MO6PFP089	Test of a Short Prototype of a Superconducting Undulator for the ANKA Synchrotron Light Source	339
	E.M. Mashkina, A.J. Magerl University Erlangen-Nurnberg, Institute of Condensed Matter Physics, Erlangen C. Boffo, M. Borlein, W. Walter BNG, Würzburg S. Casalbuoni, A.W. Grau, M. Hagelstein, D. Saez de Jauregui FZK, Karlsruhe N. Vassiljev University Erlangen-Nuernberg, Institute of Condensed Matter Physics, Erlangen
	A new 15 mm period, 1.5 m long planar undulator is being fabricated by Babcock Noell GmbH (BNG) for the ANKA synchrotron light source. In order to qualify the production process and to optimize both the quench protection scheme and the magnetic field correction system, a short prototype has been fabricated. The prototype has been tested in vertical configuration and liquid helium at 4.2K in the CASPER facility at ANKA. The magnetic field has been measured along the beam axis direction by Hall probes with a positioning precision of 3 μm. We report here on the field shimming scheme and the resulting performance of the coils.
WE5RFP064	A New Superconducting Undulator for the ANKA Synchrotron Light Source	2410
	C. Boffo, M. Borlein, W. Walter BNG, Würzburg T. Baumbach, A. Bernhard KIT, Karlsruhe S. Casalbuoni, A.W. Grau, M. Hagelstein, R. Rossmanith FZK, Karlsruhe E.M. Mashkina University Erlangen-Nuernberg, Erlangen
	Superconducting insertion devices (IDs) are very attractive for synchrotron light sources since they allow increasing the flux and/or the photon energy with respect to permanent magnet IDs. Babcock Noell GmbH (BNG) is completing the fabrication of a 1.5 m long unit for ANKA at FZK. The period length of the device is 15 mm for a total of 100.5 full periods plus an additional matching period at each end. The key specifications of the system are: a K value higher than 2 and the capability of withstanding a 4 W beam heat load and a phase error of 3.5 degrees. In addition, during the injection phase of the machine, the nominal gap of 5 mm can be increased up to 25 mm. The magnets have been tested with liquid helium in a vertical dewar and are now being installed in the cryostat. This paper describes the technical design concepts of the device and the status of the assembly process.