guest ::
| Home > Publications database > Untersuchung der Kathoden- und Haltergeometrie einer RF-Elektronenquelle aufgrund des Rogowski-Profils |
| Home > Publications database > Untersuchung der Kathoden- und Haltergeometrie einer RF-Elektronenquelle aufgrund des Rogowski-Profils |
| Bachelor Thesis | PUBDB-2019-01356 |
; ;
2018
This record in other databases:
Please use a persistent id in citations: doi:10.3204/PUBDB-2019-01356
Abstract: The aim of this thesis was to reduce the electrical field strength at the opening of a gap between the cathode and the resonator cavity of the radio frequency electron gun of the European X-FEL. For this purpose computer simulations of the electromagnetic field inside a 3D-model of the electron gun were carried out for different edge profiles at the gap opening. While several profile types were tested the examination focuses on the Rogowski Profile.A reduction in the electrical field peaks occurring at the edges of the gap could reduce the risk of electrical discharges. In the case of the electron gun of the European X-FEL which was used for the simulation the most concern is caused by a dark current with the potential to damage parts of the accelerator. The desired reduction of the electric field peaks is likely to reduce the dark current. While the risk of electrical breakdowns is also reduced those are only of secondary concern.In the simulations the Rogowski Profile achieved a reduction of the maximal field strength at the gap by up to 20% in comparison to the geometry currently used in the European X-FEL. Secondary effects of the Rogowski Profile were also examined to ensure the quality of the electron beam and the resonant frequency of the gun cavity. The results do not cause concern for the electron beam quality. Further examination of the resonance with more precise simulations are recommended so the gun cavity can be adjusted to compensate the change.
|
The record appears in these collections: |
PDF
PDF (PDFA)