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@inproceedings{hottenbacher:ipac2021-thpab178,
author = {J.H. Hottenbacher and K. Dunkel and M. Eisengruber and S. Heberer and M. Osemann and A. Padvi and I.J. Petzenhauser and C. Piel},
% author = {J.H. Hottenbacher and K. Dunkel and M. Eisengruber and S. Heberer and M. Osemann and A. Padvi and others},
% author = {J.H. Hottenbacher and others},
title = {{The SIS100 Extraction and Emergency Kicker Magnet System}},
booktitle = {Proc. IPAC'21},
pages = {4115--4118},
eid = {THPAB178},
language = {english},
keywords = {vacuum, kicker, extraction, high-voltage, HOM},
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-THPAB178},
url = {https://jacow.org/ipac2021/papers/thpab178.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-THPAB178},
abstract = {{The extraction and emergency kicker system for SIS100 is a bipolar kicker system that allows for an in-situ choice between two directions: extraction to the experiments or to the beam dump. For that, both magnet ends are connected to a PFN each which are being charged simultaneously up to 80kV continuously. Due to the static HV operation, different to usually in other pulsed kicker systems, not only displacement current is flowing in the ferrite material. After less than 1s, the ferrite material is nearly field-free and the E-field is concentrated in the surrounding ceramic magnet clamp mechanism. As the field is further concentrated in gaps between ceramic and metallic parts, the HV layout of the magnet is a critical design task. As a magnetic field homogeneity of ±1% is required, special shaping of the coil is required as found during iterative 3D field simulations. The kicker chamber is designed to operate at a pressure level of 3·10⁻¹¹ mBar. As one 3 meter-chamber contains 3.5 m² ferrite surface, careful vacuum heat treatment of the ferrite is required to reach this pressure level. The paper will describe design principles for HV and UHV and effects found by 3D modeling.}},
}