共查询到18条相似文献,搜索用时 54 毫秒
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ITER中的电子回旋波电流驱动模拟 总被引:1,自引:1,他引:1
通过将相对论Fokker-Planck方程与波迹方程联合求解,对ITER(国际热核实验反应堆)参数下的电子回旋波电流驱动进行了数值模拟。结果表明,当波的环向发射角度不太大时,波功率沉积将发生在ITER的强场侧。当环向发射角度为21°时,电子回旋波的能量在等离子体中心区域被吸收并驱动起等离子体中心区域的电流。当发射角度变大时,电子回旋波将在弱场侧沉积功率。当发射角度为20°~30°时,能够驱动归一化的径向位置(r/a)小于0.35区域内的等离子体电流,并有较高的电流驱动效率。 相似文献
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可控核聚变与国际热核实验堆(ITER)计划 总被引:3,自引:0,他引:3
介绍了我国能源的基本隋况,核聚变能和可控核聚变的基本原理,以及国际热核聚变实验堆ITER的历史与现状。对我国磁约束核聚变的研究发展历程做了简要的回顾。 相似文献
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正【本刊2014年9月综合报道】近期,国际热核聚变实验堆(ITER)计划已取得两项重要进展,即完成托卡马克厂房混凝土基础底板的浇筑以及将首批系统部件运抵场区。建成托卡马克厂房基础底板当地时间2014年8月27日18时许,工作人员历时12小时完成了ITER托卡马克厂房混凝土基础底板(B2混凝土基础底板) 相似文献
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毕延芳 《等离子体科学和技术》2011,(6):757-764
The HTS current leads of superconducting magnets for large scale fusion devices and high energy particle colliders can reduce the power consumption for cooling ... 相似文献
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G. Dell’Orco W. CurdJ. Berry K.P. ChangJ. Ferrada B. GopalapillaiD. Gupta S. KimI. Kuehn A. KumarF. Li A. PetrovW. Reiersen 《Fusion Engineering and Design》2011,86(1):15-19
ITER (Latin for “the way”), the largest fusion experimental reactor in the world, is designed to demonstrate the technological feasibility of nuclear fusion energy conversion, at plant scale, from high temperature deuterium-tritium plasma using the Tokamak magnetic confinement arrangement.ITER will have a large vacuum vessel that hosts the plasma facing components. These components include the blanket and the divertor that will operate at temperatures, heat loads, and neutron flux higher than those reached in a nuclear fission power plant reactor.One of the main critical issues of the ITER reactor is the design of the cooling water system to transfer the heat generated in the plasma to the in-vessel components and the heat loads from the auxiliary systems to the environment.This paper describes the current ITER cooling water system and recent design modifications and optimizations. 相似文献
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Stephen O. Dean 《Journal of Fusion Energy》1998,17(2):155-175
The international character of fusion research and development is described, with special emphasis on the ITER (International Thermonuclear Experimental Reactor) joint venture. The history of the ITER collaboration is traced. Lessons drawn that may prove useful for future ventures are presented. 相似文献
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ITER用极向场(PF)线圈CICC导体短样是用西部超导材料科技有限公司提供的NbTi超导股线绕制完成,该股线在不同温度下的临界电流测试性能稳定,符合绕制导体的要求。对PF导体短样在SULTAN实验室进行了测试,经电磁循环通电前后,分流温度无较大改变,导体性能稳定。在考虑了导体自场作用的情况下,导体在5T、50kA运行环境下的分流温度为6.33K,满足ITER规定的要求。 相似文献
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《Fusion Engineering and Design》2014,89(9-10):2155-2158
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Quench simulations and stability estimations for the International Thermonuclear Experimental Reactor (ITER) are discussed. Especially numerical issues and associated benchmark actions are summarized. Satisfactory agreement between the various codes from the 4 ITER parties is now obtained after numerical convergence problems have been resolved. However, these require confirmation by experiments on relevant conductor geometries. In multistage cables, a non-uniform current distribution within the cable affects the stability of the conductor. A possible mechanism for the non-uniform distribution is flux loops between the strands or cable substages as the current is ramped up or down. A preliminary estimation of stability with non-uniform current distribution is also discussed. 相似文献
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G. Saji R. Aymar H.-W. Bartels C. W. Gordon W. Gulden D. H. Holl H. Iida T. Inabe M. Iseli A. V. Kashirski B. N. Kolbasov M. Krivosheev K. A. McCarthy G. Marbach S. I. Morozov A. Natalizio D. A. Petti S. J. Piet A. E. Poucet J. Raeder Y. Seki L. N. Topilski 《Journal of Fusion Energy》1997,16(3):237-244
This paper will summarize highlights of the safety approach and discuss the ITER EDA safety activities. The ITER safety approach is driven by three major objectives: (1) Enhancement or improvement of fusion's intrinsic safety characteristics to the maximum extent feasible, which includes a minimization of the dependence on dedicated safety systems; (2) Selection of conservative design parameters and development of a robust design to accommodate uncertainties in plasma physics as well as the lack of operational experience and data; and (3) Integration of engineered mitigation systems to enhance the safety assurance against potentially hazardous inventories in the device by deploying well-established nuclear safety approaches and methodologies tailored as appropriate for ITER. 相似文献
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Scalings of the density peak and pellet penetration length in ITER are developed based on simulations using 1.5D BALDUR integrated predictive modeling code. In these simula- tions, the pellet ablation is described by the Neutral Gas Shielding (NGS) model with grad-B drift effect taken into account. The NGS pellet model is coupled with a plasma core transport model, which is a combination of an MMM95 anomalous transport model and an NCLASS neoclassical transport model. The BALDUR code with a combination of MMM95 and NCLASS models, together with the NGS model, is used to simulate the time evolution of plasma current, ion and electron temperatures, and density profiles for ITER standard type I ELMy H-mode discharges during the pellet injection. As a result, the scaling of the density peak and pellet penetration length at peak density can be established using this set of predictive simulations that covers a wide range of ITER plasma conditions and pellet parameters. The multiple regression technique is utilized in the development of the scalings. It is found that the scaling for density at center is sensitive to both the plasma and pellet parameters; whereas the scalings for density and location of the additional peak are sensitive to the pellet parameters only. 相似文献
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C. W. Gordon G. Saji P. Barabaschi R. Gallix C. Ahlfeld T. Oikawa M. Krivosheev 《Journal of Fusion Energy》1997,16(1-2):19-24
ITER will be the first large-scale tokamak to be designed as a nuclear facility to provide public protection from external hazards such as earthquakes. The design approach for such events has been developed consistent with ITER's moderate hazards and overall safety approach on a basis of the ITER site assumptions. Seismic design is described including selection of ground motions for design purposes, seismic safety requirements, and the seismic classification scheme. The results of preliminary seismic assessments are summarized including the potential for seismically induced plasma vertical displacement events (VDE). Finally, potential facility modifications available to deal with site-specific external hazards are suggested. At the Detailed Design Report stage of the Engineering Design Activity (EDA), it is concluded that ITER has been designed to deal with the site design assumptions for earthquakes and can be designed to safety cope with a range of site-specific external hazards with modest changes to the facility. 相似文献