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Cavity profile (a) and the efficiency as the function of the magnetic field (b).
(a) The 670 GHz gyrotron with the 28 T pulsed solenoid, Vlasov converter, and mirrors. The ruler (1 m) and CD are shown for scale. (b) The gyrotron tube without connections to the liquid nitrogen Dewar. (c) Schematic diagram of the gyrotron.
Top: Oscillograms of the voltage (brown), current (blue), and microwave signals (green). Bottom: Calorimeter response to a 0.56 J single pulse (time frame shown is on the order of 10 s).
THz breakdown spots on a metallic plate located in a focal plane.
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