| EuCARD Conference Paper | |
| Report number | EuCARD-CON-2010-083 |
| Date(s), location | |
| Imprint | 2010 |
| Title | Higher order modes in third harmonic cavities for XFEL/FLASH |
| Author(s) | Shinton, I R R (The University of Manchester / The Cockcroft Institute) ; Baboi, N (DESY) ; Eddy, N (FNAL) ; Flisgen, T (The University of Rostock) ; Glock, H W (The University of Rostock) ; Jones, R M (The University of Manchester / The Cockcroft Institute) ; Juntong, N (The University of Manchester / The Cockcroft Institute) ; Khabiboulline, T N (FNAL) ; Van Rienen, U (The University of Rostock) ; Zhang, P (The University of Manchester / DESY / The Cockcroft Institute) |
| WP | 10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs |
| Task | 10.5: HOM Distribution |
| Abstract | We analyse higher order modes in the 3.9 GHz bunch shaping cavities recently installed in the FLASH facility at DESY. We report on recent experimental results on the frequency spectrum from probe based measurements made at CMTB at DESY. These are compared to those predicted by finite difference and finite element computer codes. This study is focused mainly on the dipole component of the multi-pole expansion of the wakefield. The modes are readily identifiable as single-cavity modes provided the frequencies of these modes are below the cut-off of the inter-connecting beam pipes. The modes above cut-off are coupled to the 4 cavities and are distinct from single cavity modes. |
| Presented at | 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010 |
Email contact: [email protected]
Record created 2013-06-03, last modified 2018-01-26
