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Space-resolved vacuum-ultraviolet spectroscopy for measuring impurity emission from divertor region of EAST tokamak

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Plasma Science and Technology 2022年第6期24卷 14-22页

作者： Liang HE Yongcai SHEN Hongming ZHANG Bo LYU Cheonho BAE Huajian JI Chaoyang LI Jia FU Xuewei DU Fudi WANG Qiuping WANG Xianghui YIN Shunkuan WAN Bin BIN Yichao LI shuyu dai Institute of Plasma Physics HFIPSChinese Academy of SciencesHefei 230031People's Republic of China University of Science and Technology of China Hefei 230026People's Republic of China School of Physics and Materials Engineering Hefei Normal UniversityHefei 230601People's Republic of China Institute of Energy Comprehensive National Science CenterHefei 230026People's Republic of China School of Electrical Engineering University of South of ChinaHengyang 420001People's Republic of China Anhui Spectreation Instrument Co.Ltd Hefei 230088People's Republic of China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029People's Republic of China School of Physics Dalian University of TechnologyDalian 116024People's Republic of China

The measurement of impurity distribution in the divertor region of tokamaks is key to studying edge impurity ***,a space-resolved vacuum-ultraviolet(VUV)spectrometer is designed to measure impurity emission in the divertor region on *** good spectral resolution,an eagle-type VUV spectrometer with 1 m long focal length with spherical holograph grating is used in the *** light collection,a collimating mirror is installed between the EAST plasma and the VUV spectrometer to extend the observing range to cover the upper divertor *** types of detectors,i.e.a back-illuminated charge-coupled device detector and a photomultiplier-tube detector,are adopted for the spectral measurement and high-frequency intensity measurement for feedback control,*** angle between the entrance and exit optical axis is fixed at 15°.The detector can be moved along the exit axis to maintain a good focusing position when the wavelength is scanned by rotating the *** profile of impurity emissions is projected through the space-resolved slit,which is set *** spectrometer is equipped with two gratings with 2400 grooves/mm and2160 grooves/mm,*** overall aberration of the system is reduced by accurate detector *** a result,the total spectral broadening can be reduced to about 0.013 *** simulated performance of the system is found to satisfy the requirement of measurement of impurity emissions from the divertor area of the EAST tokamak.

关键词： impurity measurement vacuum-ultraviolet spectrometer EAST divertor

Line identification of extreme ultraviolet (EUV) spectra from low-Z impurity ions in EAST tokamak plasmas

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Plasma Science and Technology 2021年第7期23卷 15-30页

作者： Lei LI Ling ZHANG Zong XU Shigeru MORITA Yunxin CHENG Fengling ZHANG Wenmin ZHANG Yanmin DUAN Qing ZANG Shouxin WANG shuyu dai Guizhong ZUO Zhen SUN Liang WANG Xiaobin DING Jinping QIAN Haiqing LIU Liqun HU Institute of Plasma Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031People’s Republic of China University of Science and Technology of China Hefei 230026People’s Republic of China Advanced Energy Research Center Shenzhen UniversityShenzhen 518060People’s Republic of China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China National Institute for Fusion Science Toki 509-5292GifuJapan Key Laboratory of Materials Modification by Laser Ion and Electron Beams(Ministry of Education)School of PhysicsDalian University of TechnologyDalian 116024People’s Republic of China Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070People’s Republic of China

Extreme ultraviolet(EUV) spectra emitted from low-Z impurity ions in the wavelength range of10–500Å were observed in Experimental Advanced Superconducting Tokamak(EAST)discharges. Several spectral lines from K-and L-shell partially ionized ions were successfully observed with sufficient spectral intensities and resolutions for helium, lithium, boron, carbon,oxygen, neon, silicon and argon using two fast-time-response EUV spectrometers of which the spectral intensities are absolutely calibrated based on the intensity comparison method between visible and EUV bremsstrahlung continua. The wavelength is carefully calibrated using wellknown spectra. The lithium, boron and silicon are individually introduced for the wall coating of the EAST vacuum vessel to suppress mainly the hydrogen and oxygen influxes from the vacuum wall, while the carbon and oxygen intrinsically exist in the plasma. The helium is frequently used as the working gas as well as the deuterium. The neon and argon are also often used for the radiation cooling of edge plasma to reduce the heat flux onto the divertor plate. The measured spectra were analyzed mainly based on the database of National Institute of Standards and Technology. As a result, spectral lines of He Ⅱ, Li Ⅱ–Ⅲ, B Ⅳ–Ⅴ, C Ⅲ–Ⅵ, O Ⅲ–Ⅷ, Ne Ⅱ–Ⅹ,Si Ⅴ–Ⅻ, and Ar Ⅹ–XVI are identified in EAST plasmas of which the central electron temperature and chord-averaged electron density range in Te0=0.6–2.8 keV and ne=(0.5–6.0)×1019 m-3, respectively. The wavelengths and transitions of EUV lines identified here are summarized and listed in a table for each impurity species as the database for EUV spectroscopy using fusion plasmas.

关键词： line identification EUV spectroscopy EUV spectra impurity line emissions tokamak plasmas

Modelling of the effects of VHF on silicon film deposition at atmospheric pressure

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Modelling of the effects of VHF on silicon film deposition a...

Wavelength calibration and spectral analysis of vacuum ultraviolet spectroscopy in EAST

第十五届全国等离子体科学技术会议

作者： Zhuang Juan,Sun JiZhong,dai shuyu Wang DeZhen (School of Physics and Optoelectronic Technology,Dalian University of Technology, Dalian,116024,China)

The pc-Si thin film solar cell is the most promising candidate for the novel solar cells due to its high *** most commonly used method of silicon film deposition in low temperature is plasma enhanced chemical vapor deposition(PECVD) with Ar/SiH4/H2 mixed ***-dimensional fluid model was used to study the effects of e,SiH,H on the deposition of microcrystalline silicon particles with different very

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来源： cnki会议评论

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Plasma Science and Technology 2024年第8期26卷 37-43页

作者：计华健张洪明吕波 Cheonho BAE 何梁林子超尹相辉沈永才戴舒宇 Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People’s Republic of China Science Island Branch Graduate SchoolUniversity of Science and Technology of ChinaHefei 230031People’s Republic of China College of Electrical Engineering University of South ChinaHengyang 421001People’s Republic of China School of Physics and Materials Engineering Hefei Normal UniversityHefei 230601People’s Republic of China School of Physics Dalian University of TechnologyDalian 116024People’s Republic of China

A vacuum ultraviolet(VUV)spectroscopy with a focal length of 1 m has been engineered specifically for observing edge impurity emissions in Experimental Advanced Superconducting Tokamak(EAST).In this study,wavelength calibration for the VUV spectroscopy is achieved utilizing a zinc *** grating angle and charge-coupled device(CCD)position are carefully calibrated for different wavelength *** wavelength calibration of the VUV spectroscopy is crucial for improving the accuracy of impurity spectral data,and is required to identify more impurity spectral lines for impurity transport *** spectra of EAST plasmas have also been obtained in the wavelength range of 50–300 nm with relatively high spectral *** is found that the impurity emissions in the edge region are still dominated by low-Z impurities,such as carbon,oxygen,and nitrogen,albeit with the application of fulltungsten divertors on the EAST tokamak.

关键词： vacuum ultraviolet spectroscopy wavelength calibration impurity spectra

EAST中装置中靶板材料对边缘等离子体的影响

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南昌大学学报（理科版） 2021年第4期45卷 321-325页

作者：戴舒宇潘奔刘冰大连理工大学物理学院辽宁大连116024

靶板的材料是当前聚变研究中的重要问题之一,偏滤器靶板材料的选择对偏滤器靶板寿命、杂质控制和等离子体参数的提升都有重要意义。在高参数等离子体条件下,会有巨大的粒子流和热流通过刮削层到达偏滤器靶板,进而引起靶板的溅射和侵蚀... 详细信息

靶板的材料是当前聚变研究中的重要问题之一,偏滤器靶板材料的选择对偏滤器靶板寿命、杂质控制和等离子体参数的提升都有重要意义。在高参数等离子体条件下,会有巨大的粒子流和热流通过刮削层到达偏滤器靶板,进而引起靶板的溅射和侵蚀。因此不同材料的靶板在等离子体轰击下对边缘区域等离子体参数的影响也会不同。在本工作中,我们使用三维边缘输运程序EMC3-EIRENE研究了锂、硼、碳、钨四种不同的靶板材料下的电子密度、电子温度以及中性粒子密度的分布。结果发现钨靶板的下游电子密度明显低于其余3种靶板材料,而钨靶板的下游电子温度则较高。中平面附近的电子温度和密度分布也观察到了相似的规律。

关键词：靶板材料边缘等离子体 EMC3-EIRENE EAST

Role of social organization engagement in high-risk groups intervention against HIV/AIDS:a case study from 176 cities of China

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Infectious Diseases of Poverty 2022年第6期11卷 70-83页

作者： Zhiwei Leng Sha Sha shuyu dai Xuehui Meng Jinfeng Li Junyi Jin Wenlin Zheng Weihua Yang Chuanju Mao Zhenzhong Wang Liujin Zhang Peng Wang Tao Yang Weizhong Yang School of Population Medicine and Public Health Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijingChina Chinese Preventive Medicine Association BeijingChina Zhejiang Chinese Medical University HangzhouChina Centre for Health Management and Policy Research School of Public HealthCheeloo College of MedicineShandong UniversityJinanChina Chinese Academy of Medical Sciences&Peking Union Medical College BeijingChina

Background: A high-risk prevention strategy is an effective way to fight against human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS). The China AIDS Fund for Non-Governmental Organizations (CAFNGO) was established in 2015 to help social organizations intervene to protect high-risk populations in 176 cities. This study aimed to evaluate the role of social organizations in high-risk population interventions against HIV/***: This study was based on the CAFNGO program from 2016 to 2020. The collected data included the number and types of social organizations participating in high-risk group interventions and the amount of funds obtained by these organizations each year. We explored the factors influencing the number of newly diagnosed AIDS cases using a spatial econometric model. Furthermore, we evaluated the effectiveness of intervention activities by comparing the percentages of the individuals who initially tested positive, and the individuals who took the confirmatory test, as well as those who retested positive and underwent the ***: Overall, from 2016 to 2020, the number of social organizations involved in interventions to protect HIV/AIDS high-risk populations increased from 441 to 532, and the invested fund increased from $3.98 to $10.58 million. The number of newly diagnosed cases decreased from 9128 to 8546 during the same period. Although the number of cities with overall spatial correlations decreased, the spatial agglomeration effect persisted in the large cities. Citywise, the number of social organizations (direct effect 19.13), the permanent resident population (direct effect 0.12), GDP per capita (direct effect 17.58;indirect effect -15.38), and passenger turnover volume (direct effect 5.50;indirect effect -8.64) were the major factors influencing new positive cases confirmed through the testing interventions performed by the social organizations. The initial positive test rates among high-risk populat

关键词： Social organization High-risk groups HIV/AIDS Spatial effect

共价三嗪骨架吸附剂-固相萃取-超高效液相色谱-串联质谱法测定牛奶中3种青霉素类残留

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色谱 2022年第11期40卷 998-1004页

作者：李琴代书宇杨媛冯玉敏练鸿振张书胜张文芬郑州市食品药品检验所河南郑州450006 郑州大学化学学院河南郑州450001 南京大学化学化工学院江苏南京210023 中国烟草总公司郑州烟草研究院河南郑州450001

建立了固相萃取-超高效液相色谱-串联质谱法(SPE-UPLC-MS/MS)同时测定牛奶中苄青霉素、邻氯青霉素、氨苄青霉素3种青霉素残留的分析方法。以自制的共价三嗪骨架(CTFs)材料作为固相萃取吸附剂,对影响固相萃取柱效率的吸附剂填充量、洗脱... 详细信息

建立了固相萃取-超高效液相色谱-串联质谱法(SPE-UPLC-MS/MS)同时测定牛奶中苄青霉素、邻氯青霉素、氨苄青霉素3种青霉素残留的分析方法。以自制的共价三嗪骨架(CTFs)材料作为固相萃取吸附剂,对影响固相萃取柱效率的吸附剂填充量、洗脱剂种类和用量及上样速率等主要因素进行了优化;同时对样品的提取和净化条件进行了考察。在3mL/min的样品流速下,采用60 mg CTFs吸附剂和6 mL纯乙腈洗涤液达到了最佳的萃取效果。以0.1%甲酸水溶液-乙腈作为流动相进行梯度洗脱,在Waters ACQUITY UPLC BEH C18色谱柱上分离,电喷雾正离子(ESI~+)模式下以动态多反应监测(MRM)采集数据,外标法定量。3种目标分析物的线性回归方程相关系数均大于0.999,检出限(LOD)为0.05~0.10μg/kg(信噪比S/N=3),定量限(LOQ)为0.1~0.4μg/kg(S/N=10),加标回收率为84.9%~94.1%,相对标准偏差(RSD,n=5)为1.66%~3.27%。此外,共价三嗪骨架材料与目标物的作用机理研究表明,主客体分子间存在π-π相互作用和氢键作用等多重相互作用,使该吸附剂可成功用于牛奶中青霉素的富集和净化。该方法具有精密度较高、重复性较好、分离度高、分析时间短等优点,可适用于牛奶中青霉素定性定量测定。

关键词：共价三嗪骨架固相萃取超高效液相色谱-串联质谱青霉素牛奶

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我国社会组织的男男性行为人群艾滋病预防级联服务效果研究

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中华流行病学杂志 2022年第6期43卷 960-965页

作者：沙莎戴淑玉郑雯琳金军怡杨伟华李锦峰毛传菊王芃中华预防医学会社会组织参与艾滋病防治基金管理委员会办公室北京100020

目的分析我国社会组织参与艾滋病防治基金(CAFNGO)支持的MSM干预项目艾滋病预防级联服务效果和主要差距,为提高社会组织艾滋病防治服务质量和项目管理优化提供建议。方法通过CAFNGO项目管理信息系统及访谈等收集指标数据和信息,对不同... 详细信息

目的分析我国社会组织参与艾滋病防治基金(CAFNGO)支持的MSM干预项目艾滋病预防级联服务效果和主要差距,为提高社会组织艾滋病防治服务质量和项目管理优化提供建议。方法通过CAFNGO项目管理信息系统及访谈等收集指标数据和信息,对不同类型社会组织、不同地区的MSM干预项目艾滋病预防级联服务中HIV初筛和确证检测、HIV感染者发现和转介治疗等各项工作指标完成情况进行统计学分析,绘制服务链图。结果2016-2020年CAFNGO支持的1508个MSM干预项目,共动员1183234名MSM接受HIV检测,占社会组织申请HIV检测服务容量的68.8%(1183234/1719139),发现初筛HIV阳性55783人,HIV确证检测比例86.6%(48327/55783),新报告HIV感染者比例3.8%(45347/1183234)。2017-2020年新报告HIV感染者治疗转介比例89.8%(32719/36444)。未在民政部门登记的社会组织项目和在民政部门登记的社会组织项目分别占项目总数的75.8%(1143/1508)和24.2%(365/1508)。2种类型社会组织MSM干预项目的新报告HIV感染者比例(3.8%和3.8%)和新报告HIV感染者治疗转介比例(89.7%和89.9%)差异无统计学意义,但部分地区2种类型社会组织的2个指标存在差异,且差异有统计学意义。结论CAFNGO建立的重点人群艾滋病预防级联服务模式有效促进了MSM感染者早期发现和早期治疗工作,但在资金资助覆盖面、预防级联服务质量及社区组织提供级联服务能力等方面有继续改进的空间。

关键词：艾滋病男男性行为者社会组织预防

Research on Global Clock Synchronization Mechanism in Software-Defined Control Architecture

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Chinese Journal of Electronics 2022年第5期31卷 915-929页

作者： LYU shuyu dai Xinfa MA Zhong GAO Yi HU Zhekun Harbin Engineering University Wuhan Digital Engineering Institute

Adopt software-definition technology to decouple the functional components of the industrial control system(ICS) in a service-oriented and distributed form is an important way for the industrial Internet of things to integrate information technology, communication technology, and operation technology. Therefore, this paper presents the concept of software-defined control architecture and describes the time consistency requirements under the paradigm shift of ICS architecture. By analyzing the physical clock and virtual clock mechanism models, the global clock synchronization space is logically divided into the physical and virtual clock synchronization domains, and a formal description of the global clock synchronization space is proposed. According to the fundamental analysis of the clock state model, the physical clock linear filtering synchronization model is derived, and a distributed observation fusion filtering model is constructed by considering the two observation modes of the virtual clock to realize the time synchronization of the global clock space by way of timestamp layer-by-layer transfer and fusion estimation. Finally, the simulation results show that the proposed model can significantly improve the accuracy and stability of clock synchronization.

关键词： software-defined control architecture communication technology clock state model information technology global clock synchronization mechanism synchronisation global clock space global clock synchronization space distributed observation fusion filtering model adopt software-definition technology time synchronization industrial control operation technology industrial control system synchronization model virtual clock mechanism models physical clock clocks filtering theory ICS architecture