Performance Expectation and Preparation of the First Experimental Campaign of the KIT 2 MW 170/204 GHz Coaxial-Cavity Gyrotron

The existing KIT 2 MW 170 GHz coaxial-cavity short-pulse pre-prototype gyrotron is being prepared to be upgraded towards multi-frequency operation at 170/204 GHz in the new FULGOR test facility. Therefore, each existing component was examined for the need for modification. A new anode, an elongation of the coaxial insert, the XY -table, and the HV oil tank have to be modified for the first operation. All required components are already manufactured and are prepared for assembly. In the first short-pulse experiments an RF output powers of 2.2 and 1.7 MW can be expected at 170 and 204 GHz, respectively. In a second experimental campaign the coaxial-cavity and the quasi-optical output system will be replaced for an optimized configuration achieving more than 2 MW RF output power at both frequencies.