Speaker
Dr
Marco Musardo
(Brookhaven National Laboratory)
Description
A 3m long In-Vacuum Undulator (IVU) is employed at the National Synchrotron Light Source II (NSLS-II) for the Hard X-ray Nanoprobe (HXN) beamline providing structural and X-ray fluorescence imaging with world-leading spatial resolution. On July 1st 2018 a gearbox shaft in the gap drivetrain assembly sheared due to stress caused by mechanical misalignment. The device was extracted from the storage ring and measured. The magnetic field measurements detected a degradation of the magnetic performance as well as a demagnetization of the magnetic modules of the first 3 upstream periods. This paper describes the phase shimming optimization and the gap taper adjustments implemented to restore the spectral performance of the device.
Author
Dr
Marco Musardo
(Brookhaven National Laboratory)
Co-authors
Dr
Toshiya Tanabe
(Brookhaven National Laboratory)
David Harder
(Brookhaven National Laboratory)
Mr
James Rank
(Brookhaven National Laboratory)
Todd Corwin
(Brookhaven National Laboratory)
Mr
Peter Cappadoro
(Brookhaven National Laboratory)
Mr
Craig Rhein
(Brookhaven National Laboratory)
