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@inproceedings{sajaev:ipac2021-thpab066,
author = {V. Sajaev},
title = {{Ground Diffusion Measurement and Its Effect on APS-U Orbit Stability}},
booktitle = {Proc. IPAC'21},
pages = {3907--3910},
eid = {THPAB066},
language = {english},
keywords = {ground-motion, electron, alignment, simulation, quadrupole},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-THPAB066},
url = {https://jacow.org/ipac2021/papers/thpab066.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-THPAB066},
abstract = {{Spatial and temporal ground diffusion can be approximately described by the ATL law*,**. Ground diffusion can have an important effect on the long-term stability of the accelerator alignment. To estimate the possible consequences of the ground diffusion on the APS Upgrade performance, the ground diffusion constant of the existing APS tunnel was measured using historical data of the orbit correction effort and then used to estimate the ground diffusion effect on the orbit stability of the APS Upgrade. In this paper, we will describe the diffusion constant measurement and present the estimations of the expected APS-U alignment and orbit stability.}},
}