Simulation of conditions for the maximal efficiency of decimeter-wave klystrons

Baikov, A. Yu.; Grushina, O. A.; Strikhanov, M.

doi:10.1134/s1063784214030037

Cited by 23 publications

(3 citation statements)

References 2 publications

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“…[4] Finally the drift tube section is replaced with cavity layout of the higher efficiency design which is recently developed using the concept of bunch core oscillation and the BAC technology. [7,8] So, we can try to check the design exactness. However, full power rating evaluation is not always required.…”

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confidence: 99%

Design Consideration of 650-MHz Circular Electron–Positron Collider Klystron and Simulation of Its Beam Tester

Zaib

Fukuda

Zhou

et al. 2017

Chinese Phys. Lett.

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We present the first phase R&D for the 800 kW cw, 650 MHz klystron for the future circular electron–positron collider (CEPC) project in China. The CEPC requires 192 klystrons and it is desired to be designed in the Institute of High Energy Physics, CAS, and manufactured domestically. Therefore, we present the manufacturing schedule of this project; the three-stage development from the beam test tube to the klystron having a high efficiency structure. Design of the beam test tube that comprises electron gun and collector is presented. First, gun simulation having a modulating anode is performed using DGUN software. The uniform beam trajectories with a beam perveance of 0.64 μA/V3/2 are simulated. We employ a Ba-dispenser cathode of radius 35 mm with ϕ10 hole at the center and obtain a current density on cathode less than 0.45 A/cm2. The beam trajectories are also simulated over beam test tube of length about 2 m with a magnetic field of 213 Gauss. Thermal analysis of the collector is performed using the ANSIS-CFX code and hence the cooling structure is determined. Mechanical design is almost carried out and it is in manufacturing stage.

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confidence: 99%

Design Consideration of 650-MHz Circular Electron–Positron Collider Klystron and Simulation of Its Beam Tester

Zaib

Fukuda

Zhou

et al. 2017

Chinese Phys. Lett.

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“…Those outside the bunch (sometimes referred to as the antibunch) are accelerated by the output cavity fields and reduce the interaction efficiency ( Figure 1). An alternative design approach for achieving very high efficiency klystrons was proposed in 1999 by Bajkov [2] which is typically referred to as the "core oscillation method" (COM). Instead of using strong bunching forces with a series of closely spaced gain cavities as done in a traditional design (which results in a significant fraction of particles outside the bunch) the idea is to significantly increase the spacing between cavities.…”

Section: Bac and Com Tuning For High Efficiencymentioning

confidence: 99%

Increasing klystron efficiency using COM and BAC tuning and application to the 5045 klystron

Jensen

Haase

Jongewaard

et al. 2016

2016 IEEE International Vacuum Electronics Conference (IVEC)

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“…Achieving higher klystron efficiencies is outlined in [3] and [4]. These principles have been applied to the 5045 to achieve a more efficient design.…”

Section: High Efficiency Designmentioning

confidence: 99%