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7. A Compact UV-Illuminated Three-Electrode Field-Distortion Gas Switch With Sub-Nanosecond Jitter

Author

Zhai, Rongxiao, Zhang, Tianyang, Yin, Jiahui, Hu, Yixiang, Qiu, Mengtong, Wu, Qilin, and Cong, Peitian

Abstract

The three-electrode field-distortion gas switch (TFGS) is one of the typical gas switches used for Marx generators. To reduce the jitter of the TFGS further, it is an effective method to add an ultraviolet (UV)-illumination structure in the switch. In this article, a novel compact UV-illuminated TFGS, which integrates the voltage-dividing resistor and the trigger pin together inside the switch, is proposed and investigated. The trigger performance of the UV-illuminated TFGS under different trigger voltages, working coefficients, and UV-illuminated gap distances is studied experimentally. The synchronous trigger performance of the switch is also tested in a three-stage Marx generator. The results show that the UV-illuminated TFGS has good self-breakdown and trigger characteristics. At the charging voltage of ±60 kV and the trigger voltage of 80 kV, the jitters are only 0.8 and 0.65 ns when the working coefficients are 65% and 70%, respectively. The optimal distance of the UV-illuminated gap is 4 mm. In addition, the UV-illuminated TFGS also has good synchronous trigger characteristics. The jitter of the three-stage Marx generator which consists of three UV-illuminated TFGSs is less than 2.0 ns when the working coefficient is more than 62%.

Published
2024
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10. TID Effect and Damage Model of 60CO γ for the TiO2 Nano-Rod-Based Resistive Switching Memory

Author

Song, Hongjia, Luo, Yanhang, Zhong, Xiangli, Wang, Jinbin, Guo, Hongxia, and Cong, Peitian

Abstract

The degradation trend and the degradation mechanism of the total ionizing dose effects on the TiO2 nano-rod arrays (NRAs)-based resistive random access memory (ReRAM) is studied by exploiting the memory to the 60Co $\gamma $ -rays. The results show that the typical bipolar ${I}$ – ${V}$ behaviors of the prepared Pt/TiO2 NRAs/Ti ReRAM can be shown clearly after 1 Mrad (Si) irradiation. In detail, the resistance of the high resistance state (HRS) decreases with the total dose, while the low resistance state (LRS) is almost unchanged. When the radiation dose reaches 1 Mrad (Si), the value of HRS resistance is reduced by about 1 order of magnitude. Moreover, the RESET voltage shows a slight decrease with the total dose. X-ray photoelectron spectrometer (XPS) characterization of resistive switching materials shows that the radiation-induced non-lattice oxygen and oxygen vacancy are the main reason for the degradation of the HRS and RESET voltage. Based on the results, a mathematical model of the ${I}$ – ${V}$ curves which can suggest the changes of the resistance and voltage simultaneously for the ReRAM under irradiation is developed based on the VTEAM model. The simulation results under different total dose of irradiation are in good agreement with the experimental results. The results can provide a basis and guidance for the research on irradiation effect and the radiation hardening for the oxide-based ReRAM.

Published
2022
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12. Design of MITL for a 3.8-mV Gamma-Ray Radiation Facility

Author

Zhao, Bowen, primary, Sun, Jiang, additional, Hu, Yixiang, additional, Cai, Dan, additional, Zhang, Jinhai, additional, Hu, Yang, additional, Zeng, Jiangtao, additional, Sun, Jiangfeng, additional, Cong, Peitian, additional, and Wang, Xuewu, additional

Published
2021
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17. An Optimization Method of the Nose-cone Buncher Cavity

Author

Liu, Wolong, Cong, Peitian, Jiang, Hongping, Wang, Zhongming, and Zheng, Shu-Xin

Subjects
Physics::Accelerator Physics, Proton and Ion Accelerators and Applications, Accelerator Physics
Abstract

The nose-cone buncher cavity is widely used on proton accelerators. It's important to properly optimize the cavity geometry for fine RF performance. Howev-er, currently the optimization is usually carried out manually and the criteria are not objective enough. In this paper, an optimization method using the multi-objective, multi-variable optimization approach is presented. The geometry and RF parameters are con-sidered as the variables and objectives respectively. The goal function is defined as the weighted sum of multiple RF parameters. The multi-variable functions are approximately derived from the single-variable functions based on electromagnetic simulation. And an optimization code is developed accordingly which has been applied to the XiPAF debuncher optimization., Proceedings of the 29\textsuperscript{th} Linear Accelerator Conf., LINAC2018, Beijing, China

Published
2018
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26. Single Event Effect Characteristics Analysis of Typical Circuit Elements in Spacecraft Power Systems

Author

Guo Xiaoqiang, Zhao Wen, Cong Peitian, Chen Wei, Zhang Feng-Qi, He Chaohui, and Chen Rongmei

Subjects
Physics, Spacecraft, business.industry, Transistor, Electrical element, Capacitance, law.invention, Electric power system, Chain (algebraic topology), law, Ionization, Electronic engineering, business, Electronic circuit
Abstract

Single event effect occurs when a single energetic particle penetrates sensitive nodes and deposits enough charge by ionization in semiconductor devices. It has become a major reliability concern for spaceflight. Single event effect characteristics analysis methods based on simulation are presented for typical circuit elements in spacecraft power systems. The failure mechanism and impact factors of single event burnout in trench power MOSFETs are investigated through numerical simulation. The broadening, quenching and capture of single event transients in combinational logics are analyzed by circuit simulation based on a coupled single event transient injection method. A behavioral modeling is introduced to predict single event effect sensitivity of the parallel to serial conversion circuit. The results show that ion-induced holes can spread efficiently to turn on the parasitic bipolar junction transistor and result in stronger carrier multiplication when the ion strikes at the center of the gate region in trench power MOSFETs. Increasing the depth of P+ plugs, decreasing the doping concentration of source regions and using lower drain bias voltages can mitigate single event burnout susceptibility. Using the same load capacitance for each stage inverter and selecting a suitable gate-width ratio are recommended to prevent single event transient broadening in inverter chains. Moreover, the reset pin of D flip-flops in the parallel to serial conversion circuit should be hardened by design according to the behavioral modeling results.

Published
2017

27. Optical Diagnostics of Multi-Gap Gas Switches for Linear Transformer Drivers

Author

Sun Tieping, Yue Zhiqin, Wei Fuli, Zhao Jizhen, Yuan Yuan, Zhang Mei, Cong Peitian, Peng Bodong, Li Yang, and Sheng Liang

Subjects
Photomultiplier, Materials science, business.industry, Detector, Condensed Matter Physics, law.invention, Optics, law, Electrical equipment, Electrode, Electric current, Transformer, business, Jitter, Voltage
Abstract

The trigger characteristics of a multi-gap gas switch with double insulating layers, a square-groove electrode supporter and a UV pre-ionizing structure are investigated aided by a high sensitivity fiber-bundle array detector, a UV fiber detector, and a framing camera, in addition to standard electrical diagnostics. The fiber-bundle-array detector is used to track the turn-on sequence of each electrode gap at a timing precision of 0.6 ns. Each fiber bundle, including five fibers with different azimuth angles, aims at the whole emitting area of each electrode gap and is fed to a photomultiplier tube. The UV fiber detector with a spectrum response of 260-320 nm, including a fused-quartz fiber of 200 μm in diameter and a solar-blinded photomultiplier tube, is adopted to study the effect of UV pre-ionizing on trigger characteristics. The framing camera, with a capacity of 4 frames per shot and an exposure time of 5 ns, is employed to capture the evolution of channel arcs. Based on the turn-on light signal of each electrode gap, the breakdown delay is divided into statistical delay and formative delay. A decrease in both of them, a smaller switch jitter and more channel arcs are observed with lower gas pressure. An increase in trigger voltage can reduce the statistical delay and its jitter, while higher trigger voltage has a relatively small influence on the formative delay and the number of channel arcs. With the UV pre-ionizing structure at 0.24 MPa gas pressure and 60 kV trigger voltage, the statistical delay and its jitter can be reduced by 1.8 ns and 0.67 ns, while the formative delay and its jitter can only be reduced by 0.5 ns and 0.25 ns.

Published
2014

30. Erratum: “Note: Multi-gap gas switch with low trigger-threshold voltage by mounting resistors and capacitors in parallel with switch gaps” [Rev. Sci. Instrum. 89, 096105 (2018)]

Author

Jiang, Hongyu, primary, Sun, Fengju, additional, Wang, Zhiguo, additional, Jiang, Xiaofeng, additional, Cong, Peitian, additional, Yin, Jiahui, additional, Huang, Tao, additional, Luo, Weixi, additional, Zhang, Tianyang, additional, and Zhai, Rongxiao, additional

Published
2018
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32. Research progress of radiation effects mechanisms and experimental techniques in nano-devices

Author

Chen, Wei, primary, Liu, Jie, additional, Ma, Xiaohua, additional, Guo, Gang, additional, Zhao, Yuanfu, additional, Guo, Xiaoqiang, additional, Luo, Yinhong, additional, Yao, Zhibin, additional, Ding, Lili, additional, Wang, Chenhui, additional, Chen, Rongmei, additional, He, Baoping, additional, Zhao, Wen, additional, Zhang, Fengqi, additional, Ma, Wuying, additional, Zhai, Pengfei, additional, Wang, Zujun, additional, Liu, Tianqi, additional, Guo, Hongxia, additional, Liu, Jiande, additional, Yang, Hailiang, additional, Hu, Peipei, additional, Cong, Peitian, additional, and Li, Zongzhen, additional

Published
2018
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35. Design of multi-gap rail gas switch and its performance test

Author

孙铁平 Sun Tieping, 曾正中 Zeng Zhengzhong, 雷天时 Lei Tianshi, 丛培天 Cong Peitian, 吴撼宇 Wu Hanyu, 李岩 Li Yan, and 邱爱慈 Qiu Aici

Subjects
Computer science, Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Automotive engineering, Test (assessment)
Published
2013

36. Discharge process and closure jitter of six-stage gas switch under pulsed trigger

Author

孙铁平 Sun Tieping, 盛亮 Sheng Liang, 邱爱慈 Qiu Aici, 李阳 Li Yang, 丛培天 Cong Peitian, and 张美 Zhang Mei

Subjects
Materials science, Control theory, Closure (topology), Process (computing), Stage (hydrology), Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Jitter
Published
2013

37. Discharging process of six-gap gas switch under pulsed trigger

Author

王亮平 Wang Liangping, 盛亮 Sheng Liang, 黄涛 Huang Tao, 李阳 Li Yang, 孙铁平 Sun Tieping, 曾正中 Zeng Zhengzhong, and 丛培天 Cong Peitian

Subjects
Materials science, business.industry, Process (computing), Electrical and Electronic Engineering, Process engineering, business, Atomic and Molecular Physics, and Optics
Published
2013

38. Self-breakdown characteristic of multi-gap rail switch

Author

雷天时 Lei Tianshi, 孙铁平 Sun Tieping, 吴撼宇 Wu Hanyu, 丛培天 Cong Peitian, and 李岩 Li Yan

Subjects
Physics, Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics
Published
2013

39. Comparison of Gaussian and Weibull models used for gas switch self-breakdown probability analysis

Author

孙铁平 Sun Tieping, 邱爱慈 Qiu Aici, and 丛培天 Cong Peitian

Subjects
Generalized inverse Gaussian distribution, symbols.namesake, Weibull modulus, Gaussian, symbols, Statistical physics, Electrical and Electronic Engineering, Exponentiated Weibull distribution, Atomic and Molecular Physics, and Optics, Weibull fading, Mathematics, Weibull distribution
Published
2013

40. Experimental study on triggering breakdown characteristics of multi-gap gas switch

Author

Cong Peitian, Sheng Liang, Li Yang, Zeng Zhengzhong, Sun Tieping, and Huang Tao

Subjects
Pressure range, Materials science, business.industry, Electrical equipment, Optoelectronics, Electric potential, Electrical and Electronic Engineering, business, Ultraviolet radiation, Electromagnetic radiation, Atomic and Molecular Physics, and Optics
Published
2012

41. Inductance of six-stage gas switch of fast linear transformer driver

Author

邱爱慈 Qiu Aici, 丛培天 Cong Peitian, 孙铁平 Sun Tieping, and 曾正中 Zeng Zhengzhong

Subjects
Leakage inductance, Materials science, business.industry, Linear variable differential transformer, Equivalent series inductance, Electrical engineering, Driver circuit, Atomic and Molecular Physics, and Optics, Inductance, Electrical and Electronic Engineering, business, Delta-wye transformer, Linear transformer driver, Transformer types
Published
2012

42. Review on gas switches developed for fast linear transformer driver

Author

邱爱慈 Qiu Aici and 丛培天 Cong Peitian

Subjects
Materials science, business.industry, Electrical engineering, Electrical and Electronic Engineering, Distribution transformer, business, Atomic and Molecular Physics, and Optics, Linear transformer driver
Published
2012

43. Lifetime of insulator used for multi-gap gas switch

Author

王亮平 Wang Liangping, 曾正中 Zeng Zhengzhong, 黄涛 Huang Tao, 孙铁平 Sun Tieping, and 丛培天 Cong Peitian

Subjects
Materials science, business.industry, Optoelectronics, Insulator (electricity), Electrical and Electronic Engineering, business, Atomic and Molecular Physics, and Optics
Published
2012

44. Design of miniature square-pulsed magnetic field generator

Author

呼义翔 Hu Yixiang, 张信军 Zhang Xinjun, 曾江涛 Zeng Jiangtao, 丛培天 Cong Peitian, 李岩 Li Yan, 罗维熙 Luo Weixi, 孙铁平 Sun Tieping, 黄涛 Huang Tao, and 郭宁 Guo Ning

Subjects
Physics, Generator (computer programming), Acoustics, Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Excitation, Square (algebra), Magnetic field
Published
2012

45. V-I characteristics of corona gas gap for annular electrode

Author

王志国 Wang Zhiguo, 魏浩 Wei Hao, 张众 Zhang Zhong, 尹佳辉 Yin Jiahui, 姜晓峰 Jiang Xiaofeng, 丛培天 Cong Peitian, 孙凤举 Sun Fengju, and 梁天学 Liang Tianxue

Subjects
Corona (optical phenomenon), Materials science, Electrode, Electrical and Electronic Engineering, Atomic physics, Atomic and Molecular Physics, and Optics
Published
2012

47. Experimental research of 2 MV laser triggered gas switch

Author

吴坚 Wu Jian, 王亮平 Wang Liangping, 张国伟 Zhang Guowei, 曾正中 Zeng Zhengzhong, 吴撼宇 Wu Hanyu, 丛培天 Cong Peitian, and 张信军 Zhang Xinjun

Subjects
Materials science, business.industry, law, Optoelectronics, Electrical and Electronic Engineering, business, Laser, Atomic and Molecular Physics, and Optics, Experimental research, law.invention
Published
2012

48. Self-breakdown charicteristic of multi-gap switch for fast linear transformer driver

Author

罗维熙 Luo Weixi, 王亮平 Wang Liangping, 黄涛 Huang Tao, 丛培天 Cong Peitian, 张国伟 Zhang Guowei, 孙铁平 Sun Tieping, 曾正中 Zeng Zhengzhong, and 乔开来 Qiao Kailai

Subjects
business.industry, Computer science, Linear variable differential transformer, Electrical engineering, Electrical and Electronic Engineering, business, Driver circuit, Atomic and Molecular Physics, and Optics, Limit switch, Linear transformer driver
Published
2011

50. Design of inductive cavity for 3 MV induction voltage adder

Author

Sun Jianfeng, Cong Peitian, Qiu Aici, Sun Fengju, Su Zhaofeng, Zhang Guowei, Wu Hanyu, Li Jingya, and Yang Hailiang

Subjects
Resonator, Adder, business.industry, Optoelectronics, Electrical and Electronic Engineering, business, Atomic and Molecular Physics, and Optics, Electronic equipment
Published
2011

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