Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 84: SC Cavities und Magnete

T 84.8: Talk

Wednesday, March 30, 2011, 18:30–18:45, 30.36: 011

Cryogen-free Magnetic Field Measurement Setup for Superconducting Undulator Coils — •Andreas Grau, Tilo Baumbach, Sara Casalbuoni, Stefan Gerstl, Michael Hagelstein, Tomas Holubek, and David Saez de Jauregui — Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany

The performance of superconducting insertion devices (IDs) depends strongly on the magnetic field quality. Precise measurements of magnetic properties are of fundamental importance for the characterization of IDs before installing in synchrotron light sources. Measurements of the field properties of conventional, i.e. permanent magnet based IDs have undergone tremendous improvements during the last years and initiated a new era in synchrotron light sources worldwide. A similar breakthrough is now necessary in the field of superconducting IDs. This is part of our R&D program for superconducting insertion devices to improve and perform quality management of their magnetic field properties. In this contribution we describe the setup for local and integral magnetic field measurements of superconducting undulator coils in a cold in vacuum (cryogen free) environment together with the results of the factory acceptance test of the measuring device.