Three-Dimensional Simulation of MIG for 42-GHz 200-kW Gyrotron

Triode Magnetron Injection Gun for 132 GHZ Gyrotron for 200 MHZ DNP-NMR Application

“…The designed MIG is further validated in another three dimensional design tool CST-Particle Studio [19,20]. A 650 kW triode MIG has been designed already for 42 GHz gyrotron by using CST-PS [19] and the similar approach is used in case of 132 GHz gyrotron.…”

Magnetron injection gun design for a Q-band 300 kW 30 A gyrotron traveling wave tube

“…It is important to emphasize here that high-quality electron beam under high operating current condition is difficult to achieve due to its strong space charge effect (SCE). To characterize the beam quality, velocity spreads (including TVS and LVS) are employed in this paper [16]. In gyro-TWTs, LVS is the uppermost velocity spread portion we care, but we almost invariably work with TVS due to its conservation during adiabatic magnetic compression and an approximate relationship with LVS by a factor of α 2 (α is the value of VR).…”

Design of a multiple frequencies magnetically tunable magnetron injection gun for gyro-devices

“…Most of these devices use the magnetron injection gun (MIG), which generates a hollow gyrating electron beam, and the emitter in MIG usually is operated under the temperature limited region. An initial design of the MIG is required which can be built up through the tradeoff equations based on the conservation of the angular momentum and the assumption of adiabatic electron motion [4][5]. Generally, there are two types of MIG including diode and triode for gyro-devices.…”