The influence of wakefields on superconducting TESLA-cavities in FEL-operation

  • Due to the additional need of very short bunches for the FEL operation with the TESLA-machine strong wakefield effects are expected. One third of the total wakefield energy per bunch is radiated into the frequency region above the energy gap of Cooper pairs in superconducting niobium. The energy of the cooper pairs in superconducting niobium at 2 K corresponds to a frequency of 700 GHz. An analytical and experimental estimation for the overall energy loss of the FEL bunch above energy gap is presented. The analytical method is based on a study from R. B. Palmer [1]. The results of the wakefield estimations are used to calculate possible quality factor reduction of the TESLA cavities during FEL operation. Results are presented.

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Author:Peter HülsmannGND, Horst Klein, Claudius PeschkeGND, Wolfgang F. O. MüllerORCiDGND
Parent Title (German):Proceedings of the eighth Workshop on Superconductivity, Abano Terme, Italy, 06.10. - 10.10.1997
Document Type:Conference Proceeding
Year of Completion:1998
Year of first Publication:1997
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/11/08
Source:Proceedings of the eighth Workshop on Superconductivity, Abano Terme, Italy, 06.10. - 10.10.1997,
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht