CERN Accelerating science

Article
Title Validation of control loop modeling for power limitation studies with beams for HL-LHC
Author(s) Karlsen-Bæck, B E (CERN ; Rome U.) ; Argyropoulos, T (CERN) ; Calaga, R (CERN) ; Karpov, I (CERN) ; Timko, H (CERN)
Publication 2023
Number of pages 4
In: JACoW IPAC 2023 (2023) TUPA160
In: 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.TUPA160
DOI 10.18429/JACoW-IPAC2023-TUPA160
Subject category Accelerators and Storage Rings
Abstract For HL-LHC intensities, transient beam loading after injection between the Super Proton Synchrotron (SPS) and the Large Hadron Collider (LHC) is expected to push the RF power in the LHC to the limit of the installed system. A detailed understanding of this process is necessary to minimize beam losses during LHC injection. Realistic models of the local SPS and LHC cavity control systems were implemented in the Beam Longitudinal Dynamics (BLonD) simulation suite to model bucket-by-bucket and turn-by-turn transient effects. We show the results of studies and detailed benchmarks of key observables such as bunch-by-bunch spacing, RF power at 2023 beam intensity and transfer functions against theory and measurements.
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