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

Nascap2k Simulation of Freja Satellite Charging Freja卫星充电的Nascap2k模拟

IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-07-09 DOI: 10.1109/TPS.2026.3686753

David L. Cooke;Victoria A. Davis;Myron J. Mandell;Christopher J. Roth

{"title":"Nascap2k Simulation of Freja Satellite Charging","authors":"David L. Cooke;Victoria A. Davis;Myron J. Mandell;Christopher J. Roth","doi":"10.1109/TPS.2026.3686753","DOIUrl":"https://doi.org/10.1109/TPS.2026.3686753","url":null,"abstract":"In this study, we used the spacecraft charging model <italic>Nascap2k to address the charging of the Freja satellite in the polar auroral region, as well as a previously reported failure of the POLAR code to simulate the observed negative kilovolt charging of Freja. We found that <italic>Nascap2k could simulate the kilovolt charging, but only after corrections to the environmental and material specifications. Without these corrections and using the same environmental specifications and satellite materials as the previous study, plus an improved geometric representation, <italic>Nascap2k performed similarly to the much older POLAR code and modeled charging to only 10s of volts negative. We found that three critical improvements were necessary to simulate kilovolt charging: correcting an error in the energetic electron specifications, changing the secondary electron yield of some materials consistent with recent measurements, and replacing a cold ambient ion assumption with an upward-accelerated ion population, as suggested by observations from the FAST satellite and from Freja at the time of the charging event. A suite of <italic>Nascap2k simulation results is presented to illustrate the sensitivity to the material and environmental specifications.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 10","pages":"5368-5375"},"PeriodicalIF":1.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176193","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

Concentric Split Ring Resonator as a Plasma Source in Miniature Ion Thruster 同心分裂环谐振器作为微型离子推力器的等离子体源

IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-09-03 DOI: 10.1109/TPS.2026.3723291

Nageshwar Nagarajan;Kunning G. Xu

引用次数: 0

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IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-10-13 DOI: 10.1109/TPS.2026.3739637

引用次数: 0

Design of a High-Gain, High-Efficiency, and Compact Metamaterial-Inspired 648-MHz Klystron for CSNS-II 用于CSNS-II的高增益、高效率、紧凑型超材料648 mhz速调管设计

IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-09-17 DOI: 10.1109/TPS.2026.3731994

Chuanchao Wang;Deyong Li;Xuanming Zhang;Hexin Wang;Zhencheng Mu;Shaozhe Wang;Jianjun Zou;Yongming Li;Yubin Gong;Sheng Wang;Zhaoyun Duan

{"title":"Design of a High-Gain, High-Efficiency, and Compact Metamaterial-Inspired 648-MHz Klystron for CSNS-II","authors":"Chuanchao Wang;Deyong Li;Xuanming Zhang;Hexin Wang;Zhencheng Mu;Shaozhe Wang;Jianjun Zou;Yongming Li;Yubin Gong;Sheng Wang;Zhaoyun Duan","doi":"10.1109/TPS.2026.3731994","DOIUrl":"https://doi.org/10.1109/TPS.2026.3731994","url":null,"abstract":"A compact metamaterial-inspired 648-MHz klystron for China Spallation Neutron Source second phase (CSNS-II) linac is investigated. By loading all-metal complementary electric split-ring resonators (CeSRRs) on the drift tube of a reentrant cavity, the cavity diameter is reduced to 198 mm, corresponding to <inline-formula> <tex-math>$0.43lambda $ </tex-math></inline-formula>. To account for the transverse nonuniformity of the cavity fields, area-averaged values of the characteristic impedance and coupling coefficient over the cross section of the electron beam are used in AJDisk. A six-cavity metamaterial-inspired high-frequency structure (MIHFS) with a second harmonic cavity is then optimized. Its cylindrical envelope volume is 40.24% smaller than that of the conventional 648-MHz klystron design. For a beam voltage of 97 kV and a beam current of 19.64 A, 3-D particle-in-cell (PIC) simulations predict an output power of 1.32 MW, an electron efficiency of 69.38%, and a gain of 49.17 dB at an RF drive power of 16 W. Vacuum breakdown risk analysis and multiphysics study predict a peak electric field of 8.58 MV/m and a maximum output cavity temperature of <inline-formula> <tex-math>$43.29~^{circ }$ </tex-math></inline-formula>C with water cooling. These results indicate that the CeSRR-loaded structure is a feasible route to a compact MW-level 648-MHz klystron.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 10","pages":"5034-5040"},"PeriodicalIF":1.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176306","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

Study on the Characteristics of Pre-Breakdown Arc During Capacitive Closing in Vacuum Interrupters 真空灭流器电容合闸预击穿电弧特性研究

IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-07-13 DOI: 10.1109/TPS.2026.3709240

Enyuan Dong;Lizhi Wang;Liyan Zhang;Tianyang Xu;Yongxing Wang;Haiyang Cui;Junling Su

{"title":"Study on the Characteristics of Pre-Breakdown Arc During Capacitive Closing in Vacuum Interrupters","authors":"Enyuan Dong;Lizhi Wang;Liyan Zhang;Tianyang Xu;Yongxing Wang;Haiyang Cui;Junling Su","doi":"10.1109/TPS.2026.3709240","DOIUrl":"https://doi.org/10.1109/TPS.2026.3709240","url":null,"abstract":"Existing studies have shown that pre-breakdown arc (PBA) can effectively eliminate defects such as burrs, micro-protrusions, and metal particles on the contact surface and improve the contact surface state, thereby reducing the re-breakdown probability of the vacuum circuit breakers (VCBs). This article defines this phenomenon as “repair effect.” In terms of pre-breakdown, the current achievements mainly focus on the field emission phenomenon, and the dynamic characteristics and micro-mechanism of plasma during the PBA have not been discussed in depth. In order to further reveal its repair mechanism, it is necessary to study the plasma characteristics of the PBA, so as to provide a theoretical basis for understanding the interaction between the PBA and the contact surface. Therefore, this article establishes a comprehensive multiphysics-coupled model of the PBA in a VCB during capacitive current closing. The model aims to study the dynamic characteristics of the plasma evolution from the non-equilibrium state of the initial breakdown to the stable arcing state during the PBA process. This article divides the PBA process into two stages: “pre-arc breakdown stage (PABS)” and “quasi-steady state arcing stage (QSAS).” Through this model, the evolution of key parameters such as the generation and evolution behavior of charged particles, plasma temperature, and electrode surface energy flux density is analyzed. The accuracy of the model is verified through breakdown experiments. Furthermore, the influence mechanism of key operating parameters such as inrush current amplitude, closing voltage, and closing speed on arc characteristics is revealed. This study clarifies the generation mechanism and evolution of the PBA. The findings establish a theoretical foundation for understanding its role in contact repair and provide guidance for optimizing VCBs in high-performance capacitor banks.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 10","pages":"4769-4779"},"PeriodicalIF":1.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176324","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

Design and Verification of Miniaturized High-Power Pulsed Laser Trigger System for Optically Controlled Multigate Thyristors 光控多栅晶闸管小型化高功率脉冲激光触发系统的设计与验证

IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-09-22 DOI: 10.1109/TPS.2026.3732046

Fei Li;Lingyun Wang;Nan Gan;Xinan Xu;Dayong He;Hao Wang;Bin Gao;Jindong Liu;Xinpeng Ma;Xiaoping Li;Jingru Zhang;Ningfeng Bai;Zusheng Zhou;Qilong Wang

{"title":"Design and Verification of Miniaturized High-Power Pulsed Laser Trigger System for Optically Controlled Multigate Thyristors","authors":"Fei Li;Lingyun Wang;Nan Gan;Xinan Xu;Dayong He;Hao Wang;Bin Gao;Jindong Liu;Xinpeng Ma;Xiaoping Li;Jingru Zhang;Ningfeng Bai;Zusheng Zhou;Qilong Wang","doi":"10.1109/TPS.2026.3732046","DOIUrl":"https://doi.org/10.1109/TPS.2026.3732046","url":null,"abstract":"Optically controlled multigate thyristors (OCMGTs) face challenges in high-voltage series applications, specifically requiring high-power triggering and synchronous turn-on of multiple gates. To address these issues, this article proposes a compact, high-power nanosecond pulse laser trigger system based on the field-induced nonlinear trigger mode (Mode C), targeting a benchmark of 4.5-kW peak optical power. The drive circuit utilizes a SiC MOSFET capacitor-direct-drive topology with a compact, low-inductance package, achieving a peak current of 146.6 A and an 80 ns rise time. Furthermore, the optical system employs a passive arrayed fiber combining and homogenization method alongside a transmissive-reflective beam-splitting mechanism, keeping the energy deviation among the three sampled optical paths within ±5%, which serves as a representative indication of the seven-spot uniformity. Experiments on a 42-kV high-voltage series assembly validate the design, achieving synchronous turn-on with a peak current of 20.15 kA, a di/dt of 19.89 kA/<inline-formula> <tex-math>$mu $ </tex-math></inline-formula>s, and a measured interstage absolute delay of 413–436-ns relative to the master trigger (channel-to-channel skew <inline-formula> <tex-math>$approx$ </tex-math></inline-formula>23 ns). Consequently, no turn-on delay or local overvoltage occurs across any stage, establishing a highly reliable engineering path for all-solid-state pulsed-power systems.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 10","pages":"5193-5205"},"PeriodicalIF":1.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176333","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

Development of the Structural Simulator for the Calibration of the Virtual Reality Environment of the ITER Remote Handling Control System ITER远程处理控制系统虚拟现实环境标定结构模拟器研制

IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-06-23 DOI: 10.1109/TPS.2026.3700331

A. Zoppoli;E. Kolokotronis;N. A. Pintos Cabrera;S. Esque;H. Saarinen;E. Ruiz Morales;D. Hamilton;G. Di Gironimo

{"title":"Development of the Structural Simulator for the Calibration of the Virtual Reality Environment of the ITER Remote Handling Control System","authors":"A. Zoppoli;E. Kolokotronis;N. A. Pintos Cabrera;S. Esque;H. Saarinen;E. Ruiz Morales;D. Hamilton;G. Di Gironimo","doi":"10.1109/TPS.2026.3700331","DOIUrl":"https://doi.org/10.1109/TPS.2026.3700331","url":null,"abstract":"Remote maintenance is a key function to ensure reliable, safe, and long-term operation of fusion reactors. However, handling heavy components in tight spaces is a challenging task. As part of its goals, the ITER project also has to demonstrate the feasible design, integration, and operation of a remote handling system (RHS) able to perform both preplanned tasks and recovery/rescue operations in case of failure or abnormal conditions. The ITER Remote Handling Control System (RHCS) is based on a man-in-the-loop concept due to the complexity of the tasks. In order to make more informed and aware decisions while supervising or teleoperating RH equipment movements, the operators are provided with both real images coming from on-site cameras and virtual renderings, thanks to the virtual reality (VR) system. Generally, VR renderings are made of rigid CAD models and do not consider the effects of dynamic factors on the RH equipment (RH) structure. This work shows the development activities of the structural simulator (SS) for the calibration of the RH VR models, aimed at accurately representing the real configuration the robots assume due to their own weight and the handled load.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 10","pages":"5529-5536"},"PeriodicalIF":1.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11575707","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149175998","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

Discrete Cavity Analysis of Coupled-Cavity Traveling Wave Tubes 耦合腔行波管的离散腔分析

IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-09-17 DOI: 10.1109/TPS.2026.3727919

Md Wahidur Rahman;Patrick Y. Wong;John W. Luginsland;Matthew A. Franzi;Brad W. Hoff;David Simon;Nicholas M. Jordan;Ronald M. Gilgenbach;Peng Zhang

引用次数: 0

Analysis of the Temperature Parameters of Single and Multistage Atmospheric Pressure 2.45-GHz Microwave Plasma System 单级和多级大气压2.45 ghz微波等离子体系统温度参数分析

IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-09-25 DOI: 10.1109/TPS.2026.3734472

Xinpeng Bai;Wenhui Ma;Nan Luo;Changxiao Zhao;Qi-Qi Li;Guixin Zhang

{"title":"Analysis of the Temperature Parameters of Single and Multistage Atmospheric Pressure 2.45-GHz Microwave Plasma System","authors":"Xinpeng Bai;Wenhui Ma;Nan Luo;Changxiao Zhao;Qi-Qi Li;Guixin Zhang","doi":"10.1109/TPS.2026.3734472","DOIUrl":"https://doi.org/10.1109/TPS.2026.3734472","url":null,"abstract":"Atmospheric pressure microwave plasma (AMP) sources are garnering increasing attention in fields such as nanomaterial synthesis and the treatment of hazardous environmental substances. This study aims to overcome the limited plasma jet length constraint in traditional single stage AMP sources by developing a three-stage nitrogen AMP system. Temperature field distributions of both single- and multistage AMP systems were characterized through multidimensional experimental and simulation methods, including optical emission spectroscopy (OES), thermocouple measurements, and COMSOL Multiphysics coupling simulations. Experimental results reveal that the plasma core region achieves temperatures exceeding 6000 K with a radial gradient distribution. Increasing microwave power induces axial and radial expansion of the plasma volume, while higher gas flow rates cause peripheral temperature reduction and radial contraction. Simulation results demonstrate that increasing the number of stages significantly extends the axial plasma length and expands the high-temperature core region, with interstage distance adjustments enabling regulation of temperature gradient distributions. The multistage AMP system achieves stable high-temperature operation with tunable temperature field distributions, demonstrating suitability for continuous processing of high-melting-point nanomaterials and thermal decomposition of organic hazardous waste.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 10","pages":"5009-5024"},"PeriodicalIF":1.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176060","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

Experimental Investigations of Pseudospark Discharge-Based Short-Pulsed Electron Beam Source for Surface Modification 基于伪火花放电的表面改性短脉冲电子束源实验研究

IF 1.6 4区物理与天体物理

IEEE Transactions on Plasma Science Pub Date : 2026-10-01 Epub Date: 2026-06-24 DOI: 10.1109/TPS.2026.3696636

Akhilesh Mishra;Sachin Shishodia;Varun Dixit;Ram Prakash Lamba;Radha Raman Mishra;Udit Narayan Pal

{"title":"Experimental Investigations of Pseudospark Discharge-Based Short-Pulsed Electron Beam Source for Surface Modification","authors":"Akhilesh Mishra;Sachin Shishodia;Varun Dixit;Ram Prakash Lamba;Radha Raman Mishra;Udit Narayan Pal","doi":"10.1109/TPS.2026.3696636","DOIUrl":"https://doi.org/10.1109/TPS.2026.3696636","url":null,"abstract":"In the present work, the investigations have been performed for the analysis of the discharge characteristics and formation of electron beams from multigap pseudospark discharge-based short-pulsed electron beam source (PD-SEBS) for the surface modification. For the surface treatment, stainless steel - american iron and steel institute (SS AISI) 1045 is used as target material, and it has been observed that the generated electron beam causes significant changes on the surface. Furthermore, electron beam currents of ~1.3 kA (maximum) and ~60 A (minimum) have been measured using circuit capacitances of 36 nF and 500 pF, respectively. A particle-in-cell simulation study has also been performed to understand the discharge characteristics of the generated electron beam from PD-SEBS. The simulation study illustrates the influence of the experimentally observed plasma growth inside the hollow cathode (HC) cavity and further provides information for the focusing of the electron beams suitable for surface modifications. The developed PD-SEBS can generate a pulsed electron current density of <inline-formula> <tex-math>$sim$ </tex-math></inline-formula><inline-formula> <tex-math>$ 1.1times 10^{5}$ </tex-math></inline-formula> A/cm2. Furthermore, field-emission scanning electron microscopy (FESEM) has been performed for the analysis of the microstructure change on the target job. This investigation would be very suitable for the development and optimization of PD-SEBS for potential application in the field of surface modification of different materials.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"54 10","pages":"5425-5431"},"PeriodicalIF":1.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176092","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