| Internal Note | |
| Report number | CERN-ACC-NOTE-2020-0053 |
| Title | MD3310 – Complex tune shift measurement at flat-top in the LHC |
| Author(s) | Amorim, David (Universite Grenoble-Alpes (FR)) ; Antipov, Sergey ; Biancacci, Nicolo (CERN) ; Buffat, Xavier (CERN) ; Giordano, Francesco (Universita e sezione INFN di Napoli (IT)) ; Hemelsoet, Georges-Henry (CERN) ; Levens, Tom (CERN) ; Metral, Elias (CERN) ; Mounet, Nicolas (CERN) ; Ribes Metidieri, Ariadna (University of Barcelona (ES)) ; Salvant, Benoit (CERN) ; Soderen, Martin (CERN) ; Uznanski, Slawosz (CERN) ; Valuch, Daniel (CERN) |
| Corporate author(s) | CERN. Geneva. ATS Department |
| Publication | 2020 |
| Imprint | 18 Aug 2020 |
| Number of pages | 6 |
| Subject category | Accelerators and Storage Rings |
| Accelerator/Facility, Experiment | CERN LHC |
| Keywords | LHC ; impedance ; instability ; tune shift ; growth rate |
| Abstract | This note summarises the MD3310 activity. The goal was to measure the complex tune shift as a function of intensity in the LHC at 6.5 TeV. The session took place in the night of 17 June to 18 June 2018 as part of the MD block 1. Bunches of various intensities were injected and once at top energy, they were excited with the transverse damper (ADT). From the excitation signal, the tune of each bunch can be computed. Two fills were planned, the first to be performed with low bunch intensities, the second with high bunch intensities. Unfortunately, due to a magnet trip, only the first one was successfully completed. |
| Submitted by | alessia.valenza@cern.ch |
Journalen skapades 2020-10-06, och modifierades senast 2020-10-27