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Bending Magnets for the Metrology Light Source

Bending Magnets for the Metrology Light Source. P. Budz, M. Abo-Bakr, K. Bürkmann, V. Dürr, J. Kolbe, D. Krämer * , J. Rahn, G. Wüstefeld BESSY GmbH, Berlin, Germany ; * now at GSI, Darmstadt, Germany R. Klein, G. Ulm Physikalisch-Technische Bundesanstalt, Berlin, Germany

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Bending Magnets for the Metrology Light Source

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  1. Bending Magnets for the Metrology Light Source P. Budz, M. Abo-Bakr, K. Bürkmann, V. Dürr, J. Kolbe, D. Krämer*, J. Rahn, G. WüstefeldBESSY GmbH, Berlin, Germany; * now at GSI, Darmstadt, Germany R. Klein, G. UlmPhysikalisch-Technische Bundesanstalt, Berlin, Germany I. Churkin, A. Batrakov, S. Belokrinitskiy, I. Ilyin, A. Philipchenko, E. Rouvinski, L. Schegolev, E. Semenov, S.Sinyatkin, A.Steshov,K. Zhilyaev Budker INP, Novosibirsk, Russia

  2. OUTLOOK Status of MLS Bending Magnet: view, requirements Manufacturing: lamination, yoke, coils, support Measurements: • mechanical (technique, results) • magnetic (technique, results) Conclusion

  3. Metrology Light Source P.Budz… “Status of MLS” metrology and technology development in UV and EUV 2008 - user operation

  4. MLS SR Bending Magnets Back view Front view

  5. MLS SR Bending Magnets

  6. Bending Magnets ANALOGS • SAGA dipole • smaller • 22.5 of bending angle • BESSY • straight dipole

  7. Manufacturing Lamination 960 x 729.5 • 15 m for --- • 50 m 0.5 mm M940-50 (EBG, Bochum, Germany) Stabolit 70 – end packs (100 mm) Stabolit 20 – central part Stamping by «Sibtekstilmash” Novosibirsk

  8. Manufacturing • Combined technology: • 100 mm glued end packs • Welded central part

  9. Manufacturing

  10. Manufacturing Thermal stress testing- for every 4th coil 20 cycles: 30 °C 95°C 30 °C 21 x 12 / 5 mm2 OFHC(Outokumpu) 14 windings in 2 layers 6 “pancakes”(2 with trim coils) 23.5 min duration of cycle Epoxy impregnation

  11. Manufacturing Shuttle distance - 370 mm The tolerance of Dipole positioningis ± 0.2 mm Stand for Dipole Pedestals for Dipoles

  12. Mechanical measurements “1” = 50 mm

  13. Mechanical measurements

  14. Magnetic measurements Magnetic field mapping in Cartesian coordinates by 2 runs(with parallel shift) Carriage with Hall probes in the guide mounted in the magnet aperture

  15. Magnetic measurements Carriage with the Hall probes 1 –temperature sensor, 2 –Hall probes, 3 – NMR probe Dipole at the magnetic measurement stand (BINP)

  16. Magnetic measurements Capability of magnetic measurement system

  17. Magnetic measurements Magnetic field profiles in the central cross-section at B=0,21 T Magnetic field profiles in the central cross-section at B=1.3 T

  18. Magnetic measurements Integral magnetic field profiles (measured andcalculated at B=1.3 T)

  19. Magnetic measurements Typical longitudinal profile (dipole #3) of the magnetic field (B0=1.3 T) B=1.3005 ± 0.0013 T (10-3) Leff = 119.219 ± 0.068 cm(6.10-4) E = 591.8 ± 0.7 MeV Integral = 1.5504 ± 0.0017 T.m(1.1.10-3)

  20. Magnetic measurements Dependence of the effective length from excited current (measurement results for dipole #1 and calculation)

  21. Magnetic measurements

  22. Conclusion Produced Bending Magnets meet the requirements Magnetic and mechanical measurements are correlated Magnetic measurements confirm 3D modeling Bending Magnets are being installed on the SR MLS

  23. Conclusion International Team and Bending Magnet at BINP Workshop Bending Magnets at MLS

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