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RIS citation export for MOP18: Injection Chicane Beta-Beating Correction for Enhancing the Brightness of the CERN PSB Beams

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 ABDW 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  - 2022/04
PY  - 2022
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  -