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 - Prebibaj, T. AU - Albright, S.C.P. AU - Antoniou, F. AU - Asvesta, F. AU - Bartosik, H. AU - Bracco, C. AU - Di Giovanni, G.P. AU - Maclean, E.H. AU - Mikulec, B. AU - Renner, E. ED - Gianfelice, Eliana ED - Nagaitsev, Sergei ED - Kim, Dong Eon ED - Marx, Michaela ED - Schaa, Volker R. W. TI - Injection Chicane Beta-Beating Correction for Enhancing the Brightness of the CERN PSB Beams J2 - Proc. of HB2021, Batavia, IL, USA, 04-08 October 2021 CY - Batavia, IL, USA T2 - ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams T3 - 64 LA - english AB - In the context of the LHC Injectors Upgrade Project (LIU), the Proton Synchrotron Booster (PSB) developed an H⁻ charge exchange injection system. The four short rectangular dipoles of the injection chicane induce focusing errors through edge focusing and Eddy currents. These errors excite the half-integer resonance 2Qy = 9 and cause a dynamically changing beta-beating in the first milliseconds after injection. Using the beta-beating at the positions of two individually powered quadrupoles, measured with k-modulation, correction functions based on a model response matrix have been calculated and applied. Minimizing the beta-beating at injection allows the machine to be operated with betatron tunes closer to the half-integer resonance and therefore with larger space charge tune spreads. In this contribution the results of the beta-beating compensation studies and the impact on the achievable beam brightness limit of the machine are presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 112 EP - 117 KW - injection KW - resonance KW - emittance KW - focusing KW - brightness DA - 2024/03 PY - 2024 SN - 2673-5571 SN - 978-3-95450-225-7 DO - doi:10.18429/JACoW-HB2021-MOP18 UR - https://jacow.org/hb2021/papers/mop18.pdf ER -