| Article | |
| Title | The Influence of Tuners and Temperature on the Higher Order Mode Spectrum for 1.3 GHz SCRF Cavities |
| Author(s) | Ainsworth, R (Royal Holloway, U. of London) ; Molloy, S (ESS, Lund) ; Zhang, P (CERN) ; Grecki, M (DESY) ; Baboi, N (DESY) ; Wamsat, T (DESY) ; Eddy, N (Fermilab) |
| Publication | 2013 |
| Number of pages | 3 |
| In: | 16th International Conference on RF Superconductivity, Paris, France, 23 - 27 Sep 2013, pp.thp048 |
| Abstract | Higher Order Modes (HOMs) are of concern for superconducting cavities as they can drive instabilities and so are usually damped and monitored. With special dedicated electronics, HOMs can provide information on the position on the beam. It has been proposed that piezo tuners used to keep the cavities operating at 1.3 GHz could alter the HOM spectrum altering the calibration constants used to read out the beam position affecting long term stability of the system. Also, of interest is how the cavity reacts to the slow tuner. Detuning and the retuning the cavity may alter the HOM spectrum. This is of particular interest for future machines not planning to use dedicated HOM damping as the tuning procedure may shift the frequency of HOMs onto dangerous resonances. The effect of temperature on the HOM spectrum is also investigated. An investigation of these effects has been performed at FLASH and the results are presented. |
| Copyright/License | publication: (License: CC-BY) |
Record creato 2015-10-26, modificato l'ultima volta il 2022-08-17
