Design of a Ka‐band MW‐level high efficiency gyroklystron for accelerators. Issue 11 (14th June 2018)

• Record Type: Journal Article
• Authors: Wang, Li; Dong, Kun; He, Wenlong; Wang, Jianxun; Luo, Yong; Cross, Adrian W.; Ronald, Kevin; Phelps, Alan D. R.
• Is Part Of: IET microwaves, antennas & propagation. Volume 12:Issue 11(2018)
• Page Start: 1752
• Page End: 1757
• Publication Date: 2018-06-14
• Subjects: gyrotrons -- klystrons -- millimetre wave tubes; three‐cavity Ka‐band MW‐level high efficiency gyroklystron design -- accelerators -- TE02 mode -- TE01 mode -- magnetron injection gun -- MIG -- interaction circuit -- particle‐in‐cell simulation -- Matlab code -- frequency 36 GHz -- voltage 95 kV -- current 45 A; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2018.0103
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : Design of a three‐cavity Ka‐band MW‐level gyroklystron operating in the TE02 mode in the output cavity while the input cavity and buncher are operating with the TE01 mode is presented. The optimised design of the magnetron injection gun (MIG) and interaction circuit has been completed by particle‐in‐cell simulation and analytically using a MATLAB code. The simulations show the gyroklystron can deliver an output power of more than 1.5 MW with a gain of >35 dB at 36 GHz. The achieved efficiency exceeds 40% when driven by a 95 kV, 45 A beam. The optimised MIG has a transverse velocity spread of <3% when the velocity ratio is around 1.3.