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LHC Operational Experience of the 6.5 TeV Proton Run with ATS Optics
2018
In May 2017, the CERN Large Hadron Collider (LHC) restarted operations at 6.5 TeV using the Achromatic Telescopic Squeeze (ATS) scheme with a target beta-star of 40 cm in ATLAS and CMS. The number of bunches was progressively increased to a maximum of 2556 with emittances of 2.5 um. In August, several machine parameters had to be re-tuned to mitigate beam loss induced instabilities and maintain a steady increase of the instantaneous luminosity. The use of a novel beam type and filling pattern
doi:10.18429/jacow-ipac2018-mopmf050
fatcat:vvgqbei4wfcvddtez27jzl42ae