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@inproceedings{calvey:ipac2021-mopab046, author = {J.R. Calvey and T.G. Berenc and A.R. Brill and L. Emery and T. Fors and A. Gu and K.C. Harkay and T.J. Madden and N. Sereno and U. Wienands}, % author = {J.R. Calvey and T.G. Berenc and A.R. Brill and L. Emery and T. Fors and A. Gu and others}, % author = {J.R. Calvey and others}, title = {{Plan for Operating the APS-Upgrade Booster with a Frequency Sweep}}, booktitle = {Proc. IPAC'21}, pages = {201--204}, eid = {MOPAB046}, language = {english}, keywords = {injection, booster, extraction, cavity, emittance}, 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-MOPAB046}, url = {https://jacow.org/ipac2021/papers/mopab046.pdf}, note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB046}, abstract = {{The APS-Upgrade presents several challenging demands to the booster synchrotron. Swap-out injection requires the booster to capture a high charge bunch (up to 17 nC), accelerate it to 6 GeV, and maintain a low emittance at extraction for injection into the storage ring. To accommodate these conflicting demands, the RF frequency will be ramped between injection and extraction. However, the RF cavity tuners will remain static, which means the couplers will need to withstand a high reflected power at extraction. This paper presents a plan for a system that will meet the requirements for injection efficiency, extracted emittance, and equivalent power at the coupler. Results from tracking simulations and beam studies with a frequency ramp will also be shown.}}, }