| Internal Note | |
| Report number | CERN-ACC-NOTE-2023-0014 |
| Title | Chromaticity measurement using the beam transfer function (MD 6803) |
| Author(s) | Buffat, Xavier (CERN) ; Giacomel, Lorenzo (CERN) ; Mounet, Nicolas (CERN) ; Soderen, Martin |
| Corporate author(s) | CERN. Geneva. ATS Department |
| Publication | 2023 |
| Imprint | 12 Sep 2023 |
| Number of pages | 10 |
| Subject category | Accelerators and Storage Rings |
| Accelerator/Facility, Experiment | CERN LHC |
| Keywords | LHC ; beam transfer function ; chromaticity |
| Abstract | Chromaticity measurement at the LHC is based on energy modulation which is incompatible with high intensity beam operation. A new measurement technique compatible with high intensity beams is tested at injection and top energy. It is based on a fit of the beam transfer function obtained from transverse excitation and measurement of a single bunch using the transverse damper (ADT). When compared to the measurement based on energy modulation, the BTF approach exhibits a bias and resolution in the order of 1 to 2 units. These first results demonstrate the feasibility of the approach and steer future developments to reduce the bias and improve the resolution. |
| Submitted by | stephanie.espic@cern.ch |
Record created 2023-09-19, last modified 2023-09-19