| Published Articles | |
| Report number | CERN-ACC-2019-100 |
| Title | The 2018 heavy-ion run of the LHC |
| Author(s) | Jowett, John (CERN) ; Bahamonde Castro, Cristina (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Bruce, Roderik (CERN) ; Coello, Jaime (CERN) ; Dilly, Joschua (CERN) ; Fartoukh, Stephane (CERN) ; Fol, Elena (CERN) ; Fuster-Martínez, Nuria (CERN) ; Garcia-Tabares, Ana (CERN) ; Hofer, Michael (CERN) ; Holzer, Eva Barbara (CERN) ; Jebramcik, Marc (CERN) ; Keintzel, Jacqueline (CERN) ; Lechner, Anton (CERN) ; Maclean, Ewen (CERN) ; Malina, Lukas (CERN) ; Medvedeva, Tatiana (CERN) ; Mereghetti, Alessio (CERN) ; Mirarchi, Daniele (U. Manchester (main)) ; Persson, Tobias (CERN) ; Petersen, Brian (CERN) ; Redaelli, Stefano (CERN) ; Salvachua, Belen (CERN) ; Schaumann, Michaela (CERN) ; Schwick, Christoph (CERN) ; Solfaroli, Matteo (CERN) ; Spitznagel, Martin (CERN) ; Timko, Helga (CERN) ; Tomás, Rogelio (CERN) ; Wegscheider, Andreas (CERN) ; Wenninger, Jorg (CERN) ; Wollmann, Daniel (CERN) |
| Publication | 2019 |
| Number of pages | 4 |
| In: | 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEYYPLM2 |
| DOI | 10.18429/JACoW-IPAC2019-WEYYPLM2 |
| Subject category | Accelerators and Storage Rings |
| Accelerator/Facility, Experiment | CERN LHC |
| Abstract | The fourth one-month Pb-Pb collision run brought LHC Run 2 to an end in December 2018. Following the tendency to reduce dependence on the configuration of the preceding proton run, a completely new optics cycle with the strongest ever focussing at the ALICE and LHCb experiments was designed and rapidly implemented, demonstrating the maturity of the collider’s operating modes. Beam-loss monitor thresholds were carefully adjusted to provide optimal protection from the multiple loss mechanisms in heavy-ion operation. A switch from a basic bunch-spacing of 100 ns to 75 ns was made as the beam became available from the injector chain. A new record luminosity, 6 times the original design and close to the operating value proposed for HL-LHC, provided validation of the strategy for mitigating quenches due to bound-free pair production (BFPP) at the interaction points of the ATLAS and CMS experiments. Most of the beam parameters of the HL-LHC Pb-Pb upgrade were attained during this run and the integrated luminosity goals for the first 10 years of LHC operation were substantially exceeded. |
| Copyright/License | Publication: (License: CC-BY-3.0) |
Corresponding record in: Inspire
Datensatz erzeugt am 2019-10-17, letzte Änderung am 2020-09-28
