Tag: WP2 Accelerator Physics and Performance
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LHC High-Intensity Tests paving the way for HiLumi LHC
During the two days dedicated to LHC high-intensity tests, the accelerator successfully operated with an unprecedented number of high-intensity bunches and provided encouraging results and valuable lessons ahead of the main high-intensity test campaign planned in late-June. Preparatory tests for the LHC high-intensity (HI) period, carried out on 4th to 6th May 2026 marked an important milestone…
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The challenges of magnet sorting for the HL-LHC
Magnet sorting is a challenging process that aims at improving the performance of a particle accelerator by the clever choice of the position of the magnets to induce a natural compensation of the field errors that are inevitable in modern superconducting magnets. These studies are intrinsically multi-faceted and an appropriate figure of merit should be…
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Towards the challenging Dynamic Aperture goals of Run 4
The recent IPAC’23 conference was an ideal opportunity to present and discuss within our community the status of the beam dynamics simulations for Run 4, marking the start of HL-LHC operation. At top energy, proton beams will circulate in the machine for about 10 hours, covering inside the LHC ring about half the distance of…
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Performance ramp-up in the HL-LHC era
The performance ramp-up of the LHC after LS3 foresees a smooth ramp-up of the effective pile-up density for the nominal case, with a nominal bunch intensity reached after two years (i.e. as of 2029: 1.7 × 1011 in 2027 and 2028 is a placeholder for the bunch intensity reached in Run3 in LHC, whose target…
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Highlights from the HL-LHC Work Packages
WP2: Performance and Beam Dynamics During a measurement campaign in 2017 at the LHC, it was clearly demonstrated for the first time the beam lifetime improvement due to a compensation of the beam-beam long range effects, using DC current baring wires. The measurements and design studies are continuing during 2018 for further refining of the…
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Highlights from the HL-LHC Work Packages
WP2: Performance and Beam Dynamics Following the project re-baselining in summer 2016, the layout and optics of the high luminosity insertion regions were reviewed and the performance re-evaluated. This has led to a small but visible reduction in performance, reducing the margins available for the achievement of the nominal and ultimate luminosity targets. Optimization of…