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Analysis and Simulation of a Multigap Sheet Beam Extended Interaction Relativistic Klystron Amplifier.
- Source :
- IEEE Transactions on Plasma Science; Jun2015, Vol. 43 Issue 6, p1862-1870, 9p
- Publication Year :
- 2015
-
Abstract
- To improve the output power and electron efficiency and broaden the operating bandwidth, the three-gap extended output cavity was used in the relativistic klystron to replace the single-gap output cavity. The high-frequency characteristics of the three-gap extended cavity were studied. The electron load conductance was derived and corrected based on the theory of relativity, by which a more accurate relation of electron load conductance versus transmit angle can be obtained. The characteristic impedance is three times bigger than that of the single-gap cavity under the case of the $2\pi $ mode, which can improve the M^{2}(R/Q) and the beam–wave interaction efficiency. The model of sheet beam klystron (SBK) is comprised of three-gap input cavity, two-gap first idler, three-gap second idler cavity, and three-gap output cavity. The 3-D particle-in-cell simulation results show that for a 500 kV, 1 kA, 40.134 GHz, and 20 W input power, the SBK is capable of generating an output power higher than 142 MW with the gain of 68.5 dB, maximum interaction efficiency of 28.4%, and 3-dB bandwidth of 240 MHz. [ABSTRACT FROM PUBLISHER]
- Subjects :
- BANDWIDTHS
KLYSTRONS
RELATIVITY
ELECTRIC admittance
ELECTRIC admittance measurement
Subjects
Details
- Language :
- English
- ISSN :
- 00933813
- Volume :
- 43
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Plasma Science
- Publication Type :
- Academic Journal
- Accession number :
- 103222465
- Full Text :
- https://doi.org/10.1109/TPS.2015.2427792