Novel Prediction Methods of Multicarrier Multipactor for Space Industry Standards

Anza, S.; Puech, J.; Raboso, D.; Wochner, Ulrich; Mader, Philippe; Koch, Olivier; Angevain, Jean-Christophe; Hong, Un-Pyo; Magnusson, P.; Montero, I.; Belhaj, Mohamed; Petit, John; Gil, J.; Vicente, C.; Boria, Vicente E.

doi:10.1109/tmtt.2021.3120095

Cited by 4 publications

(4 citation statements)

References 32 publications

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“…In the empirical pulsed method, a multicarrier signal envelop is approximated by a rectangular pulse. Empirical equations [136] are used to calculate the net electron growth rate over a complete period of the rectangular pulse representing the multicarrier signal. A global optimization method is employed to determine the worst case phase combinations of the multicarrier operation, where the cost function is defined as the carrier amplitude leading to multipactor breakdown for each phase combination.…”

Section: Novel Multipactor Prediction Methods For Multicarrier Rf Ope...mentioning

confidence: 99%

Recent advances in multipactor physics and mitigation

et al. 2023

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Recent progress made in the prediction, characterisation, and mitigation of multipactor discharge is reviewed for single‐ and two‐surface geometries. First, an overview of basic concepts including secondary electron emission, electron kinetics under the force law, multipactor susceptibility, and saturation mechanisms is provided, followed by a discussion on multipactor mitigation strategies. These strategies are categorised into two broad areas – mitigation by engineered devices and engineered radio frequency (rf) fields. Each approach is useful in different applications. Recent advances in multipactor physics and engineering during the past decade, such as novel multipactor prediction methods, understanding space charge effects, schemes for controlling multipacting particle trajectories, frequency domain analysis, high frequency effects, and impact on rf signal quality are presented. In addition to vacuum electron multipaction, multipactor‐induced ionization breakdown is also reviewed, and the recent advances are summarised.

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Section: Novel Multipactor Prediction Methods For Multicarrier Rf Ope...mentioning

confidence: 99%

Recent advances in multipactor physics and mitigation

et al. 2023

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“…3(a)-(d) clearly point out that the proposed genetic algorithm requires a much lower number of tracked particles than a traditional Monte Carlo analysis to obtain convergent results. For a proportion of altered particles β of 10%, around 30 particles are required with an average computational effort of 45.49 s, whereas the Monte Carlo method still exhibits a relevant variability [and therefore RMSE error, according to (8)] with 200 tracked particles and an average CPU time of 211.29 s, although both methods tend to converge to the reference voltage computed by SPARK3D. As a consequence, a significant reduction in the computational effort for the same statistical variability measured in terms of RMSE [see Fig.…”

Section: A Convergence Analysismentioning

confidence: 99%

“…Multipactor can occur in a wide variety of systems. This article focuses on RF and microwave components designed to operate in space [6], [7], [8], but it can also appear inside klystrons [9], magnetrons [4], [10], particle accelerators [11] and many other devices, for which the techniques presented in this work can be also extended to.…”

Section: Introductionmentioning

confidence: 99%

A Genetically Based Algorithm to Improve Execution Speed in Multipactor Simulations in Parallel-Plate Waveguides

Cervera-Marín,

Jodar,

Alcaide Guillén

et al. 2024

IEEE Trans. Electron Devices

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This article presents an approach to enhance the convergence speed of Monte Carlo simulations for multipactor phenomena in parallel-plate geometries. Multipactor, a self-sustained electron discharge, may cause significantly harmful effects in electronic device operation. An adaptive genetic modification method is introduced to explore the parameter space of electron trajectories efficiently, leading to rapid identification of the critical combinations that induce population growth or decay. The proposed approach involves modifying key parameters, such as the initial phases and kinetic energies of individual particles, based on their performance in multipactor simulations. The reported results demonstrate a substantial improvement in convergence speed, achieving accurate results with fewer tracked particles. The adaptive genetic modification proves to be a promising technique for fast multipactor threshold predictions in parallel-plate configurations and has potential applications when analyzing electron-induced phenomena in a wide range of electronic systems.

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“…The influence of uncertainty in SEY parameters on the multipactor threshold of rough surfaces was also investigated [19]. To determine the multipactor threshold in RF devices, numerous experimental tests and numerical simulations have been performed all over the world [20], [21]. However, no particular study on the observed uncertainty in experimentally detected multipactor thresholds has been found in the literature to the authors´ knowledge.…”

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confidence: 99%

Uncertainty Budget in Microwave High-Power Testing

García-Patrón,

Rodríguez,

Ruiz-Cruz

et al. 2023

IEEE Trans. Instrum. Meas.

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Space borne radio frequency (RF) systems must cope with hard qualification procedures, including the evaluation of high-power handling capability of equipment for space applications. Whatever the electrical parameter is being measured, the general rule of thumb throughout a verification process is to check whether the system can operate up to certain thresholds, which are defined to ensure total reliability for the mission along its operative lifetime. Therefore, assessing and reducing the uncertainty linked to their measurement is a mandatory issue as it directly affects the accuracy of the qualification process, and hence the safety of the whole space mission. This paper presents a novel comprehensive study of all variables affecting measurement uncertainty for high RF power test activities. The study is focused on space applications, and, in particular, multipactor testing, because they comprise the largest number of variables. This is not a restricting case; in fact, the outcome of this work is applicable both for space and ground RF applications. As a conclusion, a complete uncertainty for RF high power testing is obtained, and, where possible, mitigation actions have been also defined.

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Novel Prediction Methods of Multicarrier Multipactor for Space Industry Standards

Cited by 4 publications

References 32 publications

Recent advances in multipactor physics and mitigation

Recent advances in multipactor physics and mitigation

A Genetically Based Algorithm to Improve Execution Speed in Multipactor Simulations in Parallel-Plate Waveguides

Uncertainty Budget in Microwave High-Power Testing

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