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Physical design and recent experimental results of the new ICRF antenna on EAST

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Plasma Science and Technology 2024年第6期26卷 169-176页

作者：杨桦张新军袁帅秦成明张伟 G.URBANCZYK 钱金平刘鲁南王高翔陈青青 Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People’s Republic of China Institut Jean Lamour UMR 7198 CNRS-Universitéde Lorraine 2 allée André GuinierNancy 54011France University of Science and Technology of China Hefei 230026People’s Republic of China

Two new ICRF antennas operating in the ion cyclotron radio frequency(ICRF) range have been developed for EAST to overcome the low coupling problem of the original *** original ICRF antennas were limited in their power capacity due to insufficient *** new antenna design takes into account both wave coupling and absorption processes through comprehensive wave coupling and absorption codes,with the dominant parallel wave number k∥of 7.5 m-1at dipole *** the use of these new ICRF antennas,we are able to achieve 3.8 MW output power and 360 s operation,*** initial experimental results demonstrate the reliability of the antenna design method.

关键词： ICRF antenna coupling EAST

Kinetic equilibrium reconstruction with internal safety factor profile constraints on EAST tokamak

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Plasma Science and Technology 2024年第4期26卷 61-67页

作者：樊皓尘李国强钱金平张学习邬潇河储宇奇朱翔连辉刘海庆吕波金仡飞臧庆黄佳 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 230031People’s Republic of China Shenzhen University Shenzhen 518060People’s Republic of China University of California Los Angeles Los Angeles 90095United States of America

Reconstruction of plasma equilibrium plays an important role in the analysis and simulation of plasma experiments. The kinetic equilibrium reconstruction with pressure and edge current constraints has been employed on EAST tokamak. However, the internal safety factor(q) profile is not accurate. This paper proposes a new way of incorporating q profile constraints into kinetic equilibrium reconstruction. The q profile is yielded from the Polarimeter Interferometer(POINT)reconstruction. Virtual probes containing information on q profile constraints are added to inputs of the kinetic equilibrium reconstruction program to obtain the final equilibrium. The new equilibrium produces a more accurate internal q profile. This improved method would help analyze EAST experiments.

关键词： equilibrium reconstruction tokamak data analysis kinetic equilibrium q profile polarimeter-interferometer

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护理人员共享决策能力现状及影响因素研究

护理学杂志 2024年第1期39卷 72-75页

作者：胡迎新吴丹钱金平王文钱国安李路平安徽医科大学护理学院安徽合肥230601 安徽医科大学第二附属医院健康促进与教育办公室

目的了解护理人员共享决策能力的现状并探讨影响因素,为共享决策能力教育与培训提供依据。方法采用一般资料调查表、护理人员共享决策能力量表、杰弗逊共情量表和组织支持感量表对7所综合医院的2363名护理人员进行调查。结果护理人员共... 详细信息

目的了解护理人员共享决策能力的现状并探讨影响因素,为共享决策能力教育与培训提供依据。方法采用一般资料调查表、护理人员共享决策能力量表、杰弗逊共情量表和组织支持感量表对7所综合医院的2363名护理人员进行调查。结果护理人员共享决策能力得分(3.79±0.72)分,共情能力(5.64±0.70)分,组织支持(3.73±0.79)分。多元线性回归分析显示,工作年限、是否接受过共享决策教育培训、共情能力、组织支持是护理人员共享决策能力的影响因素(均P<0.05)。结论护理人员共享决策能力处于中等水平。护理管理者应根据相关影响因素,制定培训计划,以提高护理人员共享决策能力。

关键词：护理人员共享决策能力共情能力组织支持决策辅助培训综合素质影响因素

成人外周静脉留置针导管失效风险列线图预测模型的构建

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上海护理 2024年第2期24卷 1-6页

作者：邹盼盼吴丹钱金平徐翠凤王文钱国安安徽医科大学第二附属医院安徽合肥230601

目的识别成人外周静脉留置针导管失效的风险因素,建立成人外周静脉留置针导管失效风险预测模型并检验其预测效果。方法采用便利抽样法选取2021年3-4月某省6家医院的1022例置入外周静脉留置针的患者作为研究对象,根据是否发生导管失效分... 详细信息

目的识别成人外周静脉留置针导管失效的风险因素,建立成人外周静脉留置针导管失效风险预测模型并检验其预测效果。方法采用便利抽样法选取2021年3-4月某省6家医院的1022例置入外周静脉留置针的患者作为研究对象,根据是否发生导管失效分为非导管失效组(n=336)和导管失效组(n=686)。采用logistic回归分析构建预测模型,采用Bootstrap重抽样法进行内部验证,用受试者工作特征曲线下面积(ROC)和霍斯默-莱梅肖(H-L)拟合优度检验评价模型的预测效果。结果成人外周静脉留置针导管失效的独立风险因素包括通过院内培训获得外周静脉导管维护资质的护士、外科住院患者、健康教育依从性差的患者、穿刺侧肢体活动受限的患者、使用>20 G留置针、使用开放型留置针、患者主诉异常、输注刺激性药物、日输液总量≥1500 mL。风险预测模型ROC曲线下面积为0.731[95%CI(0.700~0.762)]。内部验证后C指数为0.722[95%CI(0.691,0.753)],H-L检验结果显示,χ^(2)=3.414(P=0.755)。结论本研究构建风险预测模型具有良好的预测效能,能为临床早期甄别外周静脉留置针导管失效的高危人群提供参考。

关键词：成年人静脉留置针导管失效列线图风险预测

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Biodiversity Sustainability Assessment of Principal Ecosystems in Hebei,China

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Wuhan University Journal of Natural Sciences 2007年第4期12卷 749-754页

作者： WANG Hongmei qian jinping ZHANG Xiulan HE Xiubin Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 Sichuan China Graduate University of Chinese Academy of Sciences Beijing 100049 China College of Resources and Environment Science Hebei Normal University Shijiazhuang 050016 Hebei China Departerment of Geography Xingtai University Xingtai 054001 Hebei China

Aiming at providing theoretical basis for effective protection of biodiversity, the study presents a cascade method which combines both qualitative and quantitative methods, incorporates basic data with RS（remote sense） technology, and ranks the ecosystems according to its ability of biodiversity sustainability in Hebei Province. The results indicate that the most important areas for protection in Hebei Province are forest and meadow ecosystems in some highlands around Xiaowutai Mountain, Wuling Mountain, North Hebei, Taihang Mountain and East Hebei; grass ecosystems in part of plateau area and North Hebei; and some scattered wetlands in the plain and inshore areas. This method is suitable for undertaking large-scale investigations especially when the data are not adequate or unevenly distributed spatially.

关键词： biodiversity sustainability assessment cascade method ecosystem

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南石骆驼副坝渗流安全风险分析

北京水务 2024年第2期 73-77页

作者：张敏楠高训宇张丽娟钱金平北京市密云水库管理处北京101512

南石骆驼副坝是密云水库主要挡水建筑物之一,2022年春天副坝右台地下游东侧坡脚有一处阴湿现象,2023年对副坝进行实地详细踏勘后发现台地东侧及东南侧坡脚尚有3处阴湿现象。为深入分析渗水的来源,采用高密度电法和探地雷达法对副坝进行... 详细信息

南石骆驼副坝是密云水库主要挡水建筑物之一,2022年春天副坝右台地下游东侧坡脚有一处阴湿现象,2023年对副坝进行实地详细踏勘后发现台地东侧及东南侧坡脚尚有3处阴湿现象。为深入分析渗水的来源,采用高密度电法和探地雷达法对副坝进行联合渗漏探测。分析结果表明:在副坝断面号0+209~0+265 m存在富含水区,该含水区主要是由于坝基风化层渗水补给所致,并可能加剧坝基片麻岩的风化作用,出现局部塌坡,影响齿墙下游侧覆盖层或坝脚稳定的风险,应加强监测分析,及时采取相应的消隐措施。本研究成果可为该副坝的运行管理提供科学的参考依据。

关键词：渗流安全南石骆驼副坝密云水库

Dependence of the internal inductance on the radial distance between the primary and secondary X-point surfaces in the EAST tokamak

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Plasma Science and Technology 2018年第10期20卷 62-67页

作者： Qi WANG Oingquan YANG Zhengmao SHENG Guosheng XU jinping qian Ning YAN Yifeng WANG Heng ZHANG Institute for Fusion Theory and Simulation Department of PhysicsZhejiang UniversityHangzhou 310027People＇s Republic of China Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People＇s Republic of China Science Island Branch of Graduate School University of Science and Technology of ChinaHefei 230031People＇s Republic of China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People＇s Republic of China

In view of their advantage in long-pulse high-performance operations, low internal inductance scenarios are being developed and tested for the EAST and other tokamaks. Dependence of the internal inductance on several main plasma configuration parameters are statistically analyzed. It is found that the internal inductance of the plasma is closely related to the radial distance dRsep between the primary and secondary X-point surfaces on the outer mid-plane as well as the poloidal field of the last closed flux surface. Moreover, dRsep is alSO related to the distribution of the fast electrons driven by the injected lower-hybrid waves, which is partially responsible for the observed relation between dRsep and the internal inductance. The results here should therefore be helpful as a guide for future experiments on internal inductance control and long-pulse operations of the EAST and other tokamaks, as well as for detailed theoretical study of the underlying physics.

关键词： internal inductance dRsep EAST tokamak

Study on divertor heat flux under n=3 and n=4 resonant magnetic perturbations using infrared thermography diagnostic in EAST

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Plasma Science and Technology 2022年第10期24卷 30-36页

作者： Ruirong LIANG Xianzu GONG Bin ZHANG Zhendong YANG Manni JIA Youwen SUN Qun MA Jiayuan ZHANG Yunchan HU jinping qian the EAST Team 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 Tongling University Tongling 244000People's Republic of China

Resonant magnetic perturbations(RMPs)with high toroidal mode number n are considered for controlling edge-localized modes(ELMs)and divertor heat flux in future ITER H-mode *** this paper,characteristics of divertor heat flux under high-nRMPs(n=3 and 4)in H-mode plasma are investigated using newly upgraded infrared thermography diagnostic in *** splitting strike point(SSP)accompanying with ELM suppression is observed under both RMPs with n=3 and n=4,the SSP in heat flux profile agrees qualitatively with the modeled magnetic *** RMPs suppress ELMs,they increase the stationary heat flux during ELM *** dependence of heat flux on q_(95)during ELM suppression is preliminarily investigated,and further splitting in the original strike point is observed at q 495=during ELM *** terms of ELM pulses,the presence of RMPs shows little influence on transient heat flux distribution.

关键词： resonant magnetic perturbation(RMP) divertor heat flux strike point splitting infrared thermography diagnostic

Edge localized modes suppression via edge E × B velocity shear induced by RF sheath of ion cyclotron resonance heating in EAST

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Science China(Physics,Mechanics & Astronomy) 2022年第3期65卷 71-76页

作者： XinJun Zhang Chu Zhou XiaoLan Zou TianYang Xia YanLong Li ChengMing Qin XianZu Gong Qing Zang MingHui Li Tao Zhang ShouXin Wang HaiQing Liu Guillaume Urbanczyk Adi Liu YanMing Duan YanPing Zhao jinping qian Robert Isaac Pinsker MinYou Ye BaoNian Wan Institute of Plasma Physics Chinese Academy of Sciences(ASIPP)Hefei 230031China School of Nuclear Sciences and Technology University of Science and Technology of ChinaHefei 230026China CEA IRFMSaint-Paul-les-Durance F-13108France Key Laboratory of Optoelectronic Devices and Systems College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China General Atomics San Diego CA 92186-5608USA

The control of large edge localized modes(ELMs) is a critical issue for the successful operation of future burning plasma devices,such as the international thermonuclear experimental reactor(ITER) and China fusion engineering test reactor(CFETR). In this paper, we present a new active and effective means of ELM suppression using ion cyclotron resonant heating(ICRH) on the experimental advanced superconducting tokamak(EAST). We obtained the key role of the external E × B velocity shear near the pedestal top and the scrape-off-layer(SOL) induced by the RF sheath potential of ICRH in ELM suppression. The experimental results showed a positive correlation between the RF sheath and the E × B shear rate in SOL. BOUT++ simulations indicate that increased E × B velocity shear rates in the pedestal and SOL regions promote ELM suppression;thereby, supporting the experimental observations on EAST. These findings suggest a new simple approach to access the ELM suppressed regimes in plasma with low torque input as ITER baseline discharges.

关键词： ion cyclotron resonant heating RF sheath edge localized mode suppression E×B velocity shear