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@inproceedings{liu:medsi2020-mopc16,
author = {Z. Liu and W.G. Jansma and J. Nudell and C.A. Preissner},
title = {{Validation of APS-U Magnet Support Design Analysis and Prediction}},
booktitle = {Proc. MEDSI'20},
pages = {89--92},
eid = {MOPC16},
language = {english},
keywords = {alignment, photon, dipole, quadrupole, experiment},
venue = {Chicago, IL, USA},
series = {Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation},
number = {11},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2021},
issn = {2673-5520},
isbn = {978-3-95450-229-5},
doi = {10.18429/JACoW-MEDSI2020-MOPC16},
url = {https://jacow.org/medsi2020/papers/mopc16.pdf},
note = {https://doi.org/10.18429/JACoW-MEDSI2020-MOPC16},
abstract = {{The Advanced Photon Source Upgrade (APS-U) accelerator magnets have stringent stability requirement*. The project schedule and budget did not allow for full prototyping of the final design. Therefore, the engineers relied on accurate simulation to ensure that the design would meet the specifications. Recently, assembly and free-boundary vibration tests have been done on the first article of the upstream quadrupole Doublet, Longitudinal gradient dipole and Multipole module (DLM-A). The top surface flatness of the girder and the magnet alignment measurement results demonstrate the static positioning requirement of magnet-to-magnet is met. The free-boundary condition modal test results were used to validate the FEA analysis used in the DLM-A design. This validation then confirms the predicted performance of the magnet support system design. Mode shapes and corresponding frequencies from the FEA modal analysis agree with the experimental modal analysis within an acceptable tolerance. The validation approves not only the procedure for accurate modeling of magnet support system that APS-U has developed, but also provides confidence in predicting the accelerator performance.}},
}