| Article | |
| Report number | CERN-ACC-2013-0091 ; CLIC-Note-1012 |
| Title | Imperfection Tolerances For On-line Dipsersion Free Steering in the Main LINAC of CLIC |
| Author(s) | Pfingstner, J (CERN) ; Latina, A (CERN) ; Schulte, D (CERN) |
| Publication | 2013 |
| Imprint | 12 May 2013 |
| Number of pages | 3 |
| In: | 4th International Particle Accelerator Conference, Shanghai, China, 12 - 17 May 2013, pp.1673 |
| Subject category | Accelerators and Storage Rings |
| Accelerator/Facility, Experiment | CLIC |
| Abstract | Long-term ground motion misaligns the elements of the main linac of CLIC over time. Especially the misaligned quadrupoles create dispersion and hence the beam quality is decreased gradually due to an effect called chromatic dilution. Over longer time periods, orbit feedback systems are not capable to fully recover the beam quality and have to be supplemented by dispersion correction algorithms. In this paper, such and dispersion correction algorithm is presented, which is an extended version of the well-known dispersion free steering algorithm. This extended algorithm can recover the beam quality over long time scaled without stopping the accelerator operation (on-line). Tolerances for different imperfections of the system have been identified and a strong sensitivity to the resolution of the wake field monitors of the main linac accelerating structures has been identified. This problem can be mitigated by using a local excitation scheme as will be shown in this work. |
Email contact: elisabeth.gavriil@cern.ch
Notice créée le 2013-08-14, modifiée le 2024-10-25
