排序方式: 共有46条查询结果,搜索用时 31 毫秒
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GAO Xiaoyan CAI Xiao CAO Zeng CUI Chenghe 《核工业西南物理研究院年报(英文版)》2004,(1):54-56
HL-2A is the first divertor tokamak in China. The vacuum system is one of the important parts of the HL-2A tokamak, which has to be work well during the physics campaign in 2004. As the tokamak machine is separated from the operation staff during discharges, to guarantee the safe and reliable operation of the vacuum system, it is necessary to watch the vacuum system outside the machine hall with an automatic monitoring system. The paper describes the design and manufacture of the monitoring system. 相似文献
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Electron Injection by E—Field Drift and its Application in Starting—up Tokamaks at Low Loop Voltage 下载免费PDF全文
PANYuan YANXiao-Lin LIUBao-Hua 《中国物理快报》2003,20(5):688-691
We propose an innovative method of election injection by E-field drift into a plasma device and discuss its application in starting-up tokamak plasmas at low loop voltage.The experimental results obtained from HT-6M Tokamak are also presented.The breakdown loop voltage is obviously reduced and the discharge performance is improved by using the electron injection method.It could be applied to some other types of plasma device. 相似文献
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YAN Longwen HONG Wenyu LAN Tao ZHAO Kaijun DONG Jiaqi LIU Adi YU Changxuan QIAN Jun CHENG Jun YU Deliang YANG Qingwei DING Xuantong LIU Yong PAN Chuanhong 《核工业西南物理研究院年报(英文版)》2006,(1):15-16
1 Introduction
Zonal flows (ZF) have been studied in some fusion devices. For example, geodesic acoustic mode (GAM) is observed with the frequency of fGAM - 15 kHz, poloidal mode number (m〈3) and radial wave number ( krρi -0.2) using beam emission spectroscopy at plasma edge in the D Ⅲ- D tokamak. 相似文献
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激光驱动惯性约束聚变中壳层材料和聚变燃料的混合是影响聚变点火燃烧性能的关键物理问题,聚变过程中混合物形态的演化及相应热核反应速率的物理建模直接影响数值模拟的置信度,具有重要的科学意义和应用价值.本文以扩散混合机制下混合形态随时间的演化规律及其对热核反应速率的影响为研究对象,基于热力学平衡与理想气体物态方程假设,通过解析分析与一维球几何扩散方程数值解的对比研究,揭示了扩散混合主导下热核反应速率随混合形态演化的物理规律.研究发现,混合量主要通过影响燃料的体积份额直接影响热核反应速率,由混合非均匀尺度和扩散系数共同决定的扩散时间直接影响热核反应速率的时间演化行为.进一步利用蒙特卡罗方法直接模拟扩散过程得到的互扩散系数,定量分析了燃料中混入低Z、高Z材料时热核反应速率随时间演化的差异,通过与美国非均匀混合效应实验典型数值模拟结果进行对比分析,验证了理论评估的可靠性.本工作对我国惯性约束聚变混合效应实验的设计和改进具有重要参考意义. 相似文献
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SONGMei WANBao-Nian XUGuo-Sheng LINGBi-Li 《中国物理快报》2003,20(6):869-872
The statistical properties of plasma fluctuations are characterized in the boundary region of HT-7 tokamak. A non-Gaussian feature is observed in fluctuations of ion saturation current and floating potential in most of the scrape-off layer regions. The statistical properties of fluctuations have a clear radial dependence, showing a near-Gaussian character in the proximity of the velocity shear layer location and another region where the poloidal velocity has a trend to zero. Fluctuations show a bursty character with pulses asymmetric in time and the time asymmetry reaches the minimum around the shear layer. From the results, we can see an obvious coupling of the pulses and the poloidal flow. 相似文献
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DUAN Xuru CAO Zeng CUI Chenghe CAI Xiao SUN Hongjuan DING Xuantong PAN Yudong WANG Mingxu YANG Qingwei SONG Xianming LIU Dequan LIU Yi JI Xiaoquan CUI Zhengying ZHOU Yan LIU Yong 无 《核工业西南物理研究院年报(英文版)》2006,(1):30-31
1 Experiments
HL-2A tokamak is characterized by a large closed divertor chamber. Before the experimental campaign 2005 the surface of the shielding plates for the MP1 and MP2 has been covered with 2-D carbon fibre composite (about 30% of the first wall), which can protect the first wall, and effectively shield the splash of heavy metal impurity. The vacuum vessel can be baked up to 120 ℃for degassing and a glow discharge device is installed in the vessel for cleaning the inner surface. Hydrogen glow discharge cleaning (GDC) is applied to remove impurities from the wall, and helium glow discharge cleaning for removing residual hydrogen. 相似文献
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利用新研制的聚变反应速率测量系统,在神光Ⅲ原型装置上测量了间接驱动时充DT气体的玻璃球壳内爆靶丸的聚变反应速率的时间历程,获得了DT中子产额约为1010时的聚变反应速率随时间的变化过程,发现了聚变中子发射在时间上的双峰结构。利用辐射流体程序对聚变中子在时间上的双峰结构进行了数值模拟,发现双峰结构分别由冲击压缩过程和惯性压缩过程产生,靶丸壳层厚度不同时产生的聚变中子发射双峰强度比变化可能是由靶丸的初始表面调制度不同所致。通过理论模拟与实验结果的对比,验证了中子聚变反应历程的双峰结构。 相似文献
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ZHOU Yan GAO Bingyi DENG Zhongchao JIAO Yiming LIU Xiang YI Jiang LI Yonggao TIAN Chongli TANG Yiwu 《核工业西南物理研究院年报(英文版)》2006,(1):39-40
The study progress of NNSF in 2006 has been presented in this paper. The aim and plan of this item have been described briefly. Three test mirror exposure experiments have been done in this year. The main components of the deposited materials on the first mirror are carbon and iron analyzed by AES. The first mirror is polluted easier during glow discharge and wall processing than omhic discharge. 相似文献