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TUPAB026 |
Status of the Cryogenic Undulator CPMU-17 for EMIL at BESSY II / HZB |
1372 |
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- J. Bahrdt, J. Bakos, W. Frentrup, S. Gottschlich, C. Kuhn, G. Pfeiffer, C. Rethfeldt, A. Rogosch-Opolka, M. Scheer, B. Schulz, L. Ziemann
HZB, Berlin, Germany
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The CPMU-17 is the hard X-ray radiation source of a canted double undulator system for the Energy Materials In-situ Laboratory EMIL at BESSY II [1]. Various ambitious concepts are realized in this undulator such as Dy-hardened PrFeB-magnets, direct liquid Nitrogen cooling, dual loop feedback gap drive based on an optical micrometer and a low permeability stainless steel In-Vacuum(IV)-girder without keepers. The magnets are sorted according to Helmholtz coil and stretched wire data. Reproducibility and accuracy measurements of two IV-measurement tools needed for the CPMU-17 are presented: an IV-Hall probe bench and an IV-Moving Wire.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB026
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