| Published Articles | |
| Report number | CERN-ACC-2016-247 |
| Title | Feed-Forward Corrections for Tune and Chromaticity Injection Decay During 2015 LHC Operation |
| Author(s) | Solfaroli Camillocci, Matteo (CERN) ; Juchno, Mariusz (CERN) ; Lamont, Mike (CERN) ; Schaumann, Michaela (CERN) ; Todesco, Ezio (CERN) ; Wenninger, Jorg (CERN) |
| Publication | 2016 |
| Number of pages | 4 |
| In: | 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.TUPMW026 |
| DOI | 10.18429/JACoW-IPAC2016-TUPMW026 |
| Subject category | Accelerators and Storage Rings |
| Abstract | After two years of shutdown, the Large Hadron Collider (LHC) has been operated in 2015 at 6.5 TeV, close to its designed energy. When the current is stable at low field, the harmonic components of the main circuits are subject to a dynamic variation induced by current redistribution on the superconducting cables. The Field Description of the LHC (FiDel) foresaw an increase of the decay at injection of tune (quadrupolar components) and chromaticity (sextupolar components) of about 50% with respect to LHC Run1 due to the higher operational current. This paper discusses the beam-based measurements of the decay during the injection plateau and the implementation and accuracy of the feed-forward corrections as present in 2015. Moreover, the observed tune shift proportional to the circulating beam intensity and it's foreseen feed-forward correction are covered. |
| Copyright/License | publication: © 2016-2025 The Author(s) (License: CC-BY-3.0) |
Corresponding record in: Inspire
Zapis kreiran 2016-08-12, zadnja izmjena 2022-08-10
