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Performance of the LHC injector chain after the upgrade and potential development

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arxiv 2203.09202 v1 pith:DNUBUOD5 submitted 2022-03-17 physics.acc-ph

Performance of the LHC injector chain after the upgrade and potential development

classification physics.acc-ph
keywords beambeamsfixedinjectorinjectorstargetupgradechain
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The CERN accelerator complex prepares protons for the four big experiments at the Interaction Regions of the Large Hadron Collider (LHC) as well as for a number of fixed target experiments, which take beam directly from the LHC injectors. Between 2010 and 2021, a series of major changes were designed and implemented to the injector complex under the LHC Injectors Upgrade (LIU) project, with the main goal to enable the injector chain to produce LHC beams with doubled intensity and brightness. As a byproduct of these upgrades, the fixed target beams are also expected to benefit and possibly access parameter ranges previously unexplored. This letter summarises the main fixed target beams produced by the LHC injectors, their expected performance after the upgrade for the various beam types and shows first results from 2021 beam commissioning.

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