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@inproceedings{asami:ipac2021-thpab245,
author = {T. Asami and S. Igarashi and T. Koseki and Y. Kurimoto and Y. Sato},
title = {{A Simulation Study of Beam Pipe Eddy Current Effects on Beam Optics}},
booktitle = {Proc. IPAC'21},
pages = {4288--4291},
eid = {THPAB245},
language = {english},
keywords = {quadrupole, simulation, operation, vacuum, power-supply},
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-THPAB245},
url = {https://jacow.org/ipac2021/papers/thpab245.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-THPAB245},
abstract = {{In synchrotrons, fast changes of magnetic field induce eddy currents at the wall of beam pipes. The eddy currents cause a phase delay between excitation currents of the magnets and the magnetic field. The undesired magnetic field affected by eddy currents might be a serious obstacle in controlling beam optics precisely. In fact, in the operation of a high-intensity proton synchrotron J-PARC MR, the largest beam loss is observed at the beginning of acceleration when the magnetic field starts to vary in time. Therefore, it is important to estimate and understand the effects of eddy currents on beam optics. In this study, we have calculated the effect of eddy currents on magnetic field for some magnets in J-PARC MR, using electromagnetic simulation software. In this paper, we would like to report the details and results of the simulation.}},
}