JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Antoniou, F. AU - Asvesta, F. AU - Bartosik, H. AU - Comblin, J.F. AU - Di Giovanni, G.P. AU - Hostettler, M. AU - Huschauer, A. AU - Mikulec, B. AU - Nonglaton, J.-M. AU - Prebibaj, T. ED - Gianfelice, Eliana ED - Nagaitsev, Sergei ED - Kim, Dong Eon ED - Marx, Michaela ED - Schaa, Volker R. W. TI - The PS Booster Alignment Campaign and a New Tune Control Implementation After the LHC Injectors Upgrade at CERN J2 - Proc. of HB2021, Batavia, IL, USA, 04-08 October 2021 CY - Batavia, IL, USA T2 - ICFA ABDW on High-Intensity and High-Brightness Hadron Beams T3 - 64 LA - english AB - The CERN PS Booster (PSB) has gone through major upgrades during the Long Shutdown 2 (LS2) and the recommissioning with beam started in December 2020. Two of the aspects leading to improved operation will be described in this paper: a new tune control implementation; and a full re-alignment campaign. The operation of the PSB requires a large range of working points to be accessible along the acceleration cycle. As part of the LIU project, the PSB main power supply was upgraded to raise the extraction energy from 1.4 GeV to 2 GeV, in order to improve the brightness reach of the downstream machines. A new tune control implementation was necessary to take into account saturation effects of the bending magnets and the reconfiguration of the main circuits, as well as the additional complexity of the new H⁻ charge exchange injection. The first part of the paper describes the implementation of the new tune control and its experimental verification and optimization. The second part describes the results of the PSB alignment campaign after LS2, giving emphasis to the method developed to perform a combined closed orbit correction through quadrupole alignments. PB - JACoW Publishing CP - Geneva, Switzerland SP - 89 EP - 94 KW - quadrupole KW - controls KW - alignment KW - focusing KW - injection DA - 2022/04 PY - 2022 SN - 2673-5571 SN - 978-3-95450-225-7 DO - doi:10.18429/JACoW-HB2021-MOP14 UR - https://jacow.org/hb2021/papers/mop14.pdf ER -