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Figure 17
Beamline measurements of the SCU16 spectrum after a DMM with a 1% FWHM bandpass at 1.05 T (top) and 0.95 T (bottom) using the summed signal from a QBPM. The measured spectrum is in amps from the QBPM photodiodes and is scaled to compare against simulation expectations. The magnetic field from 1.084 T was scaled to 1.050 T and 1.065 T, then imported into SPECTRA to calculated the photon spectrum. The results imply that either the current for `1.05 T' is in reality 1.065 T or the beamline is significantly vertically misaligned. The same calculation was applied for the 0.95 T data set. The comparison was not conclusive in that either scenario could be the case. The inset shows the calculated spectrum from ideal and measured fields at 1.065 T.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 32| Part 4| July 2025| Pages 908-918
https://doi.org/10.1107/S1600577525003418
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