Upgrade Of The TH1506B 118 GHz Gyrotron Using Modeing Tools

The first TH1506B prototype showing problems of overheating and spurious oscillations, a new modified gyrotron was built. During the tests, the extwo peaks, which was never predicted by simulations. Various low evel tests were performed on the mode converter with different shapes for the launcher bu...

Full description

Saved in:
Bibliographic Details
Published in:AIP conference proceedings 2007, Vol.933 (1)
Main Authors: Darbos, C., Bouquey, F., Lambert, R., Magne, R., Traisnel, E., Arnold, A., Prinz, H. O., Thumm, M., Forschungszentrum Karlsruhe, Associaton Euratom-FZK, Institut fuer Hochleistungsimpuls- und Mikrowellentechnik, Hogge, J. P., Lievin, C.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALUMINIUM
DESIGN
GHZ RANGE
MICROWAVE AMPLIFIERS
MIRRORS
OSCILLATIONS
PLASMA
PLASMA SIMULATION
PULSES
RF SYSTEMS
S CODES
TOKAMAK DEVICES
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The first TH1506B prototype showing problems of overheating and spurious oscillations, a new modified gyrotron was built. During the tests, the extwo peaks, which was never predicted by simulations. Various low evel tests were performed on the mode converter with different shapes for the launcher but without real improvement. Besides measurements, the use of a new software Surf3D[l] showed that the problem mainly comes from the 3rd mirror whose curvature is too high and not well taken nto account by the calculation. This analysis software is based on ntegral equations and the complete 3D modelling alowed to determine a new profile for the 3rd mirror. An aluminium model of a new mirror was manufactured and thorough low level tests made at FZK showed that there was no double peak.The next step would consist in building a gyrotron based on this new design, to confirm the simulation and to valdate it for long pulses.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2800523