IEEE Transactions on Plasma Science最新文献_第7页

Use of Machine Learning for the Measurement of Wire Sag in a Pulsed Wire Set-up 使用机器学习测量脉冲导线装置中的导线垂度

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-03-01 Epub Date: 2026-02-04 DOI: 10.1109/TPS.2026.3657964

Deeksha Patel;Hussain Jeevakhan

{"title":"Use of Machine Learning for the Measurement of Wire Sag in a Pulsed Wire Set-up","authors":"Deeksha Patel;Hussain Jeevakhan","doi":"10.1109/TPS.2026.3657964","DOIUrl":"https://doi.org/10.1109/TPS.2026.3657964","url":null,"abstract":"The pulsed wire method (PWM) belongs to the family of well-established measurement techniques for undulator magnetic field characterization. Wire sag is a deformation caused by the weight of the wire under tension, which introduces measurement errors. Wire sag measurements of the enameled copper wire, with a thickness of <inline-formula> <tex-math>$500~mu $ </tex-math></inline-formula>m (25 swg), are done for a pulsed wire setup. The wire sag is measured for various wire lengths in the pulsed wire setup with different tensions in the wire. The measured data for the wire sag is compared with the theoretical predictions of wire sag. Machine learning (ML) models, including a random forest regressor and a multilayer perceptron (MLP) regressor, were also employed to predict sag for unmeasured tensions. The MLP model performed better, reducing deviations between experimental and theoretical sag values. This method improves sag correction, making PWM setups more reliable for undulator field measurement to find the sag for unmeasured tensions to improve the correction with theoretical sag, which can be used for correction in undulator field measurement.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 3","pages":"1144-1149"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147557760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative Study of Partial Discharge Characteristics and Dielectric Strength in Multilayer Multifunctional Electrical Insulation (MMEI)-Based and Conventional MVdc Power Cables for All Electric Aircraft 全电动飞机用多层多功能电绝缘（MMEI）与常规MVdc电力电缆局部放电特性和介电强度的比较研究

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-03-01 Epub Date: 2026-01-28 DOI: 10.1109/TPS.2026.3656301

Md Asifur Rahman;Saikat Chowdhury;Mona Ghassemi

{"title":"Comparative Study of Partial Discharge Characteristics and Dielectric Strength in Multilayer Multifunctional Electrical Insulation (MMEI)-Based and Conventional MVdc Power Cables for All Electric Aircraft","authors":"Md Asifur Rahman;Saikat Chowdhury;Mona Ghassemi","doi":"10.1109/TPS.2026.3656301","DOIUrl":"https://doi.org/10.1109/TPS.2026.3656301","url":null,"abstract":"Achieving net-zero emissions in aviation requires the adoption of fully electric propulsion, with all-electric aircraft (AEA) relying on lightweight, high-power-density electric power systems (EPSs). Medium-voltage dc (MVdc) architectures are favored over low-voltage alternatives due to their improved efficiency and reduced cable mass, particularly for wide-body aircraft. However, at cruising altitudes around 12.2 km, the ambient pressure drops to 18.8 kPa, drastically limiting convective heat transfer. This results in unique thermal challenges for power cables, with surface emissivity and installation geometry further influencing heat dissipation. Our prior work proposed several multilayer multifunctional electrical insulation (MMEI) systems to address these issues. Among them, the ARC-SC-T-MMEI structure, developed via compression molding, demonstrated superior thermal regulation, arc resistance, and electromagnetic interference (EMI) shielding. This study extends our findings by evaluating its dielectric strength and partial discharge (PD) characteristics under both atmospheric and high-altitude pressure conditions, comparing it with conventional terrestrial MV cables to validate its performance in aerospace environments.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 3","pages":"1180-1191"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147557608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Guest Editorial Special Issue on Spacecraft Charging Technology 客座编辑特刊：航天器充电技术

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-03-01 Epub Date: 2026-03-17 DOI: 10.1109/TPS.2026.3662421

Pierre Sarrailh;Fabrice Cipriani

引用次数: 0

Detailed Study of the Total Electron Emission Yield (TEEY) Properties of Black Kapton Under Electron Impact 电子冲击下黑卡普顿总电子发射产率（TEEY）特性的详细研究

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-03-01 Epub Date: 2025-12-11 DOI: 10.1109/TPS.2025.3635715

Mohamed Belhaj;Sarah Dadouch;Thierry Paulmier;Grégoire Deprez;Fabrice Cipriani

引用次数: 0

From Space Weather to Spacecraft Anomalies: Validating PAGER’s Internal Charging Models in GEO 从空间天气到航天器异常：在GEO中验证PAGER内部充电模型

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-03-01 Epub Date: 2026-02-16 DOI: 10.1109/TPS.2026.3658804

B. Tezenas du Montcel;A. M. Castillo Tibocha;D. Pitchford;A. Trouche;B. Jeanty-Ruard;D. Wang;J. Forest;Y. Y. Shprits

{"title":"From Space Weather to Spacecraft Anomalies: Validating PAGER’s Internal Charging Models in GEO","authors":"B. Tezenas du Montcel;A. M. Castillo Tibocha;D. Pitchford;A. Trouche;B. Jeanty-Ruard;D. Wang;J. Forest;Y. Y. Shprits","doi":"10.1109/TPS.2026.3658804","DOIUrl":"https://doi.org/10.1109/TPS.2026.3658804","url":null,"abstract":"The prediction of adverse effects of geomagnetic storms and energetic radiation (PAGER) project aims to provide a framework for space weather and related effects forecasts. An innovative feature included in PAGER involves integrating an automated process downstream of space weather models to assess both surface and internal charging, enabling the forecasting of spacecraft charging risks for geostationary earth orbit (GEO) and medium earth orbit (MEO). Relying on the versatile electron radiation belt (VERB) code to reproduce the relativistic electron flux spectrum evolution and on spacecraft plasma interaction software-internal charging (SPIS-IC) to deduce the internal charge conduction in sensitive devices from this flux, the PAGER simulation chain is also able to reproduce the electric field evolution over a long period of time in the past and for a given orbit. This simulation chain has been used to reproduce the maximum electric field strength evolution from <monospace>2015-08-01T00:00</monospace> to <monospace>2015-12-01T00:00</monospace> in a coaxial cable with Teflon insulation embedded on a spacecraft in GEO. This simulation has been carried out using two different conductivity models. In the first model, the radiation induced conductivity classically depends on the dose rate following a power law, while the second model uses a more refined assumptions of the material, relying on the computation of free charge carriers through a band conductivity description. The evolution of the electric field was compared with internal electrostatic discharge events that actually occurred on a satellite. The correspondence between these events and the periods of highest electric field intensity demonstrates the validity of the PAGER modeling chain for internal charging.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 3","pages":"866-875"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147557708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fast Calculation of the Corona Discharge Ignition Voltage Using the Nelder–Mead Optimization 利用Nelder-Mead优化快速计算电晕放电点火电压

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-03-01 Epub Date: 2026-02-06 DOI: 10.1109/TPS.2026.3657204

Filip Zmeko;Eva Müllerová;Petr Martínek

{"title":"Fast Calculation of the Corona Discharge Ignition Voltage Using the Nelder–Mead Optimization","authors":"Filip Zmeko;Eva Müllerová;Petr Martínek","doi":"10.1109/TPS.2026.3657204","DOIUrl":"https://doi.org/10.1109/TPS.2026.3657204","url":null,"abstract":"Accurate prediction of corona discharge ignition voltages Ui is essential for the design and reliability assessment of high-voltage (HV) systems. This article presents a combined experimental and numerical study focused on the evaluation of Ui for various electrode geometries, gap distances, and pressures in ambient or synthetic air. Based on a new analysis of experimental data, two numerical optimization models were developed and implemented in COMSOL Multiphysics to determine ignition voltages with minimal computational cost. Both models are founded on two physically motivated assumptions: a constant critical electron avalanche intensity at corona onset and symmetry of the ignition electric field profile under low field homogeneity conditions with respect to varying gap distances. The first method is based on integration of the effective ionization coefficient along the discharge path, while the second relies on the local electric field at the electrode tip. In both cases, the Nelder–Mead optimization algorithm is employed to identify the critical voltage corresponding to corona inception. The proposed methods were validated against experimental data over a wide range of pressures, electrode configurations, and field homogeneity conditions. The predicted ignition voltages show good agreement with measurements, with a typical deviation of approximately 5% and a maximum error below 10% in a limited number of cases. While the integration-based optimization provides higher robustness and reduced dependence on empirical input, the field-based optimization offers simplicity and rapid implementation. The presented approaches enable efficient parametric studies and provide practical tools for HV insulation analysis, the design of corona-resistant components, and the definition of boundary conditions (BCs) in more advanced discharge simulations.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 3","pages":"1258-1269"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11373012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147557808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

What We Can Learn From the Sensor-to-Plasma Coupling Resistance Measurements in the Earth Ionosphere 我们可以从地球电离层的传感器-等离子体耦合电阻测量中学到什么

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-03-01 Epub Date: 2025-11-03 DOI: 10.1109/TPS.2025.3617970

E. Seran;S. Hess;M. Godefroy

{"title":"What We Can Learn From the Sensor-to-Plasma Coupling Resistance Measurements in the Earth Ionosphere","authors":"E. Seran;S. Hess;M. Godefroy","doi":"10.1109/TPS.2025.3617970","DOIUrl":"https://doi.org/10.1109/TPS.2025.3617970","url":null,"abstract":"Measurements of electric potentials and currents in the Earth’s ionosphere are primarily influenced by the thermal plasma properties and the intensity of photoelectron emission from sunlit spacecraft surfaces. These measurements can be significantly affected by a plasma sheath that forms around the satellite to neutralize surface electric charging in contact with the ambient plasma. In the ionosphere, this sheath typically ranges from a few to several tens of centimeters in thickness and contains plasma that slightly differ from the surrounding undisturbed environment. Therefore, accurately characterizing the electrical properties of the sheath is essential for reliable data interpretation. In this study, we analyze ion plasma and electric field measurements taken at an altitude of 700 km by the Centre National d’Etudes Spatiales (CNES) detection of electro-magnetic emissions transmitted from earthquake region (DEMETER) microsatellite. The data were collected during specific orbital passes when onboard instruments operated in calibration mode. During these sequences, electric currents were intentionally injected from the electric field sensors into the surrounding plasma, enabling estimation of the sensor-to-plasma coupling resistance across the sheath. Plasma parameters obtained by fitting the resistance–current curve with a standard orbital-motion-limited (OML) model are compared with those derived from the ion instrument on the same spacecraft. The dataset confirms the consistency of plasma measurements performed by the two instruments.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 3","pages":"933-938"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147557833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transactions on Plasma Science 等离子体科学汇刊

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-03-01 Epub Date: 2026-03-17 DOI: 10.1109/TPS.2026.3670993

引用次数: 0

Electron Yields of Lunar Regolith Simulant Layers 月球风化层模拟层的电子产率

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-03-01 Epub Date: 2025-10-14 DOI: 10.1109/TPS.2025.3615913

Christopher Vega;Matthew Robertson;Thomas Keaton;Heather Allen;J. R. Dennison

{"title":"Electron Yields of Lunar Regolith Simulant Layers","authors":"Christopher Vega;Matthew Robertson;Thomas Keaton;Heather Allen;J. R. Dennison","doi":"10.1109/TPS.2025.3615913","DOIUrl":"https://doi.org/10.1109/TPS.2025.3615913","url":null,"abstract":"The charging of bulk lunar regolith has been recognized since the Apollo era as an immediate and critical issue facing our return to the moon. Accurate electron yield (EY) measurements of bulk highly insulating granular materials—which largely determine how such particles charge through interactions with space environments—are lacking due to many experimental complexities that have led to a critical knowledge gap. Such knowledge is essential for addressing fundamental science and myriad important lunar applications and simulations related to lunar dust and regolith electrostatic charging. The few prior EY studies of lunar dust were limited due to severe charging effects and showed yields trending toward unity both above and below crossover energies. Novel techniques have recently been developed to prepare bulk granular insulating samples and to conduct accurate EY measurements with minimal charging effects. Results for ranges of dust coverage and comparison to EY of bulk constituent materials confirm that the new methods work well. As a precursor to measurements of actual lunar regolith, secondary and backscattered EY measurements for incident energies from ~20 eV to 5 keV are presented here for standard lunar simulants and closely related very high-yield, highly insulating granular materials, including Al2O3 and SiO2. A “patch” model was applied to accurately predict composite yield curves in terms of the measured yields of bulk Al2O3, SiO2, and graphitic carbon constituents. The EY results for simulants are of immediate use to improve the reliability of current ground-based engineering tests for mitigation strategies of lunar applications and to provide better simulation models of charging dust.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 3","pages":"919-928"},"PeriodicalIF":1.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Special Issue on Selected Papers from APSPT-14 May 2027 APSPT-14论文精选特刊2027年5月

IF 1.5 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-02-16 DOI: 10.1109/TPS.2026.3661834

引用次数: 0