We report the design and experimental demonstration of a frequency tunable terahertz
gyrotron at 527 GHz built for an 800-MHz dynamic nuclear polarization enhanced nuclear …

Applications of high-power Terahertz (THz) sources require low-loss transmission lines to
minimize loss, prevent overheating and preserve the purity of the transmission mode …

Gyrotron oscillators are vacuum electron devices that have delivered megawatt average
power levels at millimeter wavelengths. The lack of other sources that are able to match …

We report experimental results on a two frequency gyrotron, operating in the TE 22, 6 mode
at 110 GHz and the TE 24, 7 mode at 124.5 GHz. The gyrotron uses the same electron gun …

Gyrotrons produce power in high-order, transverse electric modes that are typically
converted to a Gaussian beam inside the tube. In fusion plasma heating applications, the …

When using overmoded corrugated waveguide transmission lines for high power
applications, it is necessary to control the mode content of the system. Ideally, overmoded …

In high-power millimeter wave systems, transmission lines based on the circular corrugated
waveguide are widely used to realize efficient millimeter wave transmission. The mode …

Each of the four ITER electron cyclotron heating (ECH) upper launchers (ULs) features eight
transmission lines (TLs) made of guided-wave components used to inject 170-GHz …

Sensitive millimeter wave diagnostics need often to be protected against unwanted radiation
like, for example, stray radiation from high power Electron Cyclotron Heating applied in …

The elliptical polarization produced by a pair of sinusoidally profiled miter-bend grating
polarizers has been measured experimentally and found to be in excellent agreement with …