The Design and Performance of a 150-MW Klystron at S Band

Lee, T. G.; Konrad, G. T.; Okazaki, Y.; Watanabe, Masaru; Yonezawa, Hiroshi

doi:10.1109/tps.1985.4316471

Cited by 42 publications

(9 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the results of the simulation one calculates the induced rf current as described by Yu [4]. Given the impedance matrix, it is possible in principle to solve iteratively from the MASK calculations to get voltages and phases for the cavities which satisfy (1). H owever, it is not trivial to find an algorithm which converges (except in the special case of all impedances identical, in which case both voltages and phases are equal).…”

Section: Principles Of Double Output Cavitiesmentioning

confidence: 99%

Optimization of a lasertron double output cavity

Eppley¹

1986

View full text Add to dashboard Cite

Double output cavities have been used experimentally to increase the efficiency of high-power klystrons [l]. We have used particle-in-cell simulations with the 2+1/2 dimensional code MASK to optimize the design of double output cavities for the lasertron under development at SLAC. We discuss design considerations for double output cavities (e.g., optimum choice of voltages and phases, efficiency, wall interception, breakdown). We describe how one calculates the cavity impedance matrix from the gap voltages and phases. Some results of the effect of varying voltage, perveance, and pulse length are reported. * Work supported by the Department of Energy, contract DE-A CO3-76s F005 15. Pll I (e,, is the phase shift with the origin when both gaps are shorted.) If we assume that the second cavity is tuned near resonance we can take the cot es8 term to be zero. Then: x12 = f (x11 x22)1'2 * (3) These conditions, combined with the two voltages and two currents, completely define the impedance matrix.

show abstract

Section: Principles Of Double Output Cavitiesmentioning

confidence: 99%

Optimization of a lasertron double output cavity

Eppley¹

1986

View full text Add to dashboard Cite

show abstract

“…Accordingly, we have to find the best perveance to achieve a satisfactory efficiency with a manageable voltage [8]. In the high frequency high power source, the bunching section design approach is almost conventional, while the output cavity is a multi-cell system allowing power dissipation reduction, breakdowns, etc., while achieving the needed pulsed power [9][10][11]. Consequently, the objective is to design an output circuit, which has the lowest gap fields, consistent with the satisfactory efficiency and the operational reliability.…”

Section: Introductionmentioning

confidence: 99%

The Ka-band high power klystron amplifier design program of INFN

Behtouei

Spataro

Paolo

et al. 2021

Vacuum

View full text Add to dashboard Cite

In the framework of the Compact Light XLS project, a short ultra-high gradient linearizer working on the third harmonic of the main linac frequency is requested. Increasing gradients and reducing dimensions are requirements for XLS and all next generation linear accelerators. Actually, ultra-compact normal conducting accelerating structures, operating in the Ka-band are required to achieve ultra-high gradients for research, industrial and medical applications, with electric field ranging from 100 to 150 MV/m. To fulfill these strong requirements, the R&D of a proper Ka-band klystron with high RF power output and a high efficiency is mandatory. This contribution reports the design of a possible klystron amplifier tube operating on the 010 mode at 36 GHz, the third harmonic of the 12 GHz linac frequency, with an efficiency of 42% and a 20 MW RF power output. This contribution discusses also the high-power DC gun, the beam focusing channel and the RF beam dynamics.

show abstract

“…Thus, if one looks at a cross-section of the cavity at any constant axial position, there can be only one connected region for the cavity. This approach makes it impossible, for example, to analyse the re-entrant cavities that are often used in klystron tubes (Lee et al 1985). The re-entrant cavity can be modelled, however, with a straightforward extension of this approach, and that is the subject of this paper.…”

Section: Introductionmentioning

confidence: 99%

The application of scattering matrices to re-entrant cavities

Lawson¹

2001

International Journal of Electronics

View full text Add to dashboard Cite

A method that utilizes the scattering matrix formulation to solve for the electromagnetic properties of re-entrant cavities is described. The process involves the cascading of several 2-port scattering matrices for overmoded circular and coaxial waveguides with abrupt radial wall transitions and the main cavity section, which is modelled as a 4-port device. The formulations to ®nd the resonant frequencies and transmission properties of re-entrant cavities are both given. The technique is used to evaluate the performance of a high power klystron cavity and a choke¯ange. A comparison of this approach with another numerical technique is made.

show abstract

The Design and Performance of a 150-MW Klystron at S Band

Abstract: Design considerationsand performance characteristics of a 150 MW pulsed klystron amplifier at S-Band are described. One of the main problems encoun-

Cited by 42 publications

References 3 publications

Optimization of a lasertron double output cavity

Optimization of a lasertron double output cavity

The Ka-band high power klystron amplifier design program of INFN

The application of scattering matrices to re-entrant cavities

Contact Info

Product

Resources

About