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Based on the Computer Simulation Technology (CST) software, numerical simulations are carried out for a higher-order multi-modes operation of a coaxial Bragg structure at a frequency of 100 GHz. Results confirm that the band-gap overlap of the spurious modes with the operating mode can be efficiently separated by setting the phase difference between the outer-conductor and inner-rod corrugations to...
In this paper, a W-band gyrotron oscillator based on superconducting magnet is put forward. A 4 T conduction-cooled superconducting magnet with a room temperature bore of Phi100 mm was designed. The homogeneity of magnetic field in the interaction region is about 0.5%.
The eigenvalues of a coaxial cavity must be modified by the structural eccentricity (for instance, by the misalignment of the inner rod), which causes an eigenfrequency shift. In this paper the eigenfrequency shift of the higher-order modes is numerically investigated in terms of the eigenvalue equation. Taking the TE/sub 31,17,1/, TE/sub 32,17,1/,TE/sub 33,17,1/ and TE/sub 34,17,1/ modes as examples,...
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