Test of an Electromagnetic Shimming Concept for Superconducting Undulators

Accurate magnetic field measurements are a prerequisite for the characterization and optimization of undulators. At the synchrotron light source ANKA there is an ongoing R&D program for superconducting insertion devices. Within this program a test stand for precise magnetic field measurements of...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2009-06, Vol.19 (3), p.2329-2332
Main Authors: Mashkina, E., Grau, A., Boffo, C., Borlein, M., Baumbach, T., Casalbuoni, S., Hagelstein, M., Rossmanith, R., Steffens, E., Walter, W.
Format: Article
Language:English
Subjects:
Applied sciences
Coils
Cyclic accelerators and storage rings
Electrical engineering. Electrical power engineering
Electromagnets
Electronics
Exact sciences and technology
Experimental methods and instrumentation for elementary-particle and nuclear physics
Fundamental areas of phenomenology (including applications)
Light sources
Magnetic field measurement
Magnetic fields
Magnetic measurements
Magnetic variables measurement
NbTi
Nuclear physics
Optical sources and standards
Optics
Optimization
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
shimming concept
Stations
Superconducting coils
Superconducting devices
Superconducting magnets
superconducting undulator
Superconductivity
Superconductors
Synchrotrons
Testing
Undulators
Various equipment and components
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Description
Summary:Accurate magnetic field measurements are a prerequisite for the characterization and optimization of undulators. At the synchrotron light source ANKA there is an ongoing R&D program for superconducting insertion devices. Within this program a test stand for precise magnetic field measurements of superconductive coils was designed, built and installed at the Research Center Karlsruhe. Comprehensive magnetic measurements are performed to confirm the magnet design and to detect or correct field imperfections resulting from the manufacturing process. The magnetic field is measured along a fixed direction by Hall probes with a positioning precision of 3 mum. A NbTi undulator prototype with local correction coils was built to verify the performance of the superconductor and the shimming concept. In this contribution we describe the measuring test station and preliminary tests results including the efficiency of the shimming concept.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2009.2019038