Operation of a 118 GHz to 0.5 MW Gyrotron with Cryogenic Windows : Design and Long Pulse Experiments
A 210 s. 0.5 MW. 118 GHz gyrotron with a cryogenic window has been designed, constructed and tested. The gyrotron operates in a TE (22.6) cavity mode and provides a TEM (00) ode converted into a HE (11) mode in an external optics unit. It is composed of a triode type electron gun, an improved beam tunnel, a high model purity, low ohmic loss cavity with an optimized non linear taper, a highly efficient internal quasioptial mode converter, a large collector with a beam sweeping magnet, and a horizontal radio frequency output through a liquid nitrogen edge cooled single disk sapphire window. Output powers of 0.7 MW - 0.1 s and 0.5 MW - 2 s have been achieved with the desired frequency, efficiency and mode pattern.
Bibliographic Reference: Article: Twentieth International Conference on Infrared and Millimeter Waves : Conference Digest (1995) pp. 339-340
Record Number: 199610145 / Last updated on: 1996-03-01
Original language: en
Available languages: en