Investigations of After Cavity Interaction in Gyrotrons Including the Effect of Non-uniform Magnetic Field

Dynamic after-cavity interaction (ACI) in megawatt-class gyrotrons is investigated that could lead to lower output mode purity and increased level of internal stray radiation. The self-consistent KIT-IHM multi-mode-code SELFT has been modified to extend the simulation domain into the radius up-taper...

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Bibliographic Details
Main Author: Roy Choudhury, Amitavo (auth)
Format: Electronic Book Chapter
Language:English
Published: KIT Scientific Publishing 2014
Series:Karlsruher Forschungsberichte aus dem Institut für Hochleistungsimpuls- und Mikrowellentechnik
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DOAB: description of the publication
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520 |a Dynamic after-cavity interaction (ACI) in megawatt-class gyrotrons is investigated that could lead to lower output mode purity and increased level of internal stray radiation. The self-consistent KIT-IHM multi-mode-code SELFT has been modified to extend the simulation domain into the radius up-taper section of the gyrotron cavity where the probability of ACI exists. Studies on four different gyrotron configurations confirm that undesired interactions in the up-taper region can result in additional parasitic oscillations with relative power in the 1%-range. 
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650 7 |a Technology: general issues  |2 bicssc 
653 |a After-Cavity Interaction 
653 |a Fusion Plasmas 
653 |a Electron-Cyclotron-Heating 
653 |a High-Power Gyrotron 
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