基于GDT的聚变裂变混合堆堆芯参数初步设计研究

基于Gas Dynamic Trap(GDT)装置的实验进展,提出了用于驱动聚变裂变混合堆包层的聚变堆芯参数设计。基于零维堆芯物理模型,计算分析给出了一套聚变功率为50MW的初步堆芯参数方案。利用GDT装置的实验结果对该物理模型进行计算对比校验,显示该物理模型和设计参数的可靠性。     

基于GDT的14MeV中子源初步设计研究

为满足聚变材料测试对D-T聚变中子源的需要,本文首先根据国际上对用于聚变材料测试的中子源的要求给出设计目标,然后基于Gas Dynamic Trap(GDT)装置的实验进展,提出了基于GDT装置的14MeV中子源的设计初步方案,并建立了GDT中子源的物理模型。计算分析给出了两套中子源参数初步方案,其中FDS-GDT2中子壁负载为2MW/m2,可用于聚变材料的测试。     

Experimental Status of the HANBIT Facility

HANBIT is a magnetic mirror confinement device. Recent physics experiments have been mainly focused on identifying discharge characteristics and on getting stable plasma production and operation modes, by using a 500 kW slot antenna system at a fixed RF frequency of 3.5 MHz and varying discharge conditions such as fueling rate, RF power, and B-field intensity in central cell. Two distinct operation modes are found to be very sensitive to the RF power as well as the ratio of the RF frequency to the ion cyclotron frequency. A MHD interchange mode of m- -1 is clearly observed and the stabilizing mechanism can be explained by the sideband coupling theory.     

Comparison of mainline and alternate approaches to fusion energy

The tokamak and tandem mirror concepts are compared with alternate confinement concepts using the criteria established in DOE/ET-0047, An Evaluation of Alternate Magnetic Fusion Concepts 1977. The concepts are evaluated and rated in each of three broad categories: confidence in physics and technology, and reactor desirability. The STARFIRE and MARS reactors are used as a basis for comparing the mainline tokamak and tandem mirror concepts with the alternate concepts evaluated in DOE/ET-0047. Two recent alternate concepts, theohmically heated toroidal experiment (OHTE) and thecompact reversed field pinch reactor (CRFPR), are also evaluated. Results indicate that the physics of the mainline tokamaks and tandem mirrors is better understood than that of most alternate concepts. Both mainline concepts rank near the middle for technology requirements, and both rank near or at the bottom when compared with the reactor desirability of alternate concepts.     

PWR物理试验项目的审评与监督

堆芯物理试验目的是验证堆芯设计的准确性、验证换料安全分析报告的正确性。国内有些电厂物理试验项目的试验点偏少,不但造成上述验证的不充分,而且增加了后续燃料循环堆芯设计的不确定性;更不能及时发现问题,对程序模型进行改进。物理试验测量值超过设计准则或安全准则,必须经过审查和评价,获得安全监管当局许可后,才能继续运行。     

Progress in Physics and Technology Developments for the Modification of JT-60

Recent progress in the physics and engineering design study for the modification programme of JT-60 is presented. In order to achieve a steady state high-β plasma operation, which is the dominant issue of this programme, physics design for the MHD control and the stability analysis is investigated. Engineering design and the R & D for the superconducting coils, irradiation shield are performed well towards the mission of programme.     

核电厂堆芯物理试验功率亏损和功率系数项目的探讨

核电厂首次临界和后续燃料循环都需要进行一系列的试验,其中包括堆芯物理试验,目的是验证堆芯设计计算的正确性。国内压水堆核电厂物理试验由于堆型差异,存在多种堆芯物理试验管理文件。目前,国家核安全局（NNSA）的审评参照法国体系,将堆芯物理试验的文件（堆芯物理试验监督要求GORX）作为最终安全分析报告（FSAR）技术规格书的...     

A Geant4 Based Engineering Tool for Fresnel Lenses

Geant4 is a Monte Carlo radiation transport toolkit that is becoming a tool of generalized application in areas such as high-energy physics, nuclear physics, astroparticle physics, or medical physics. Besides the electromagnetic and hadronic physics processes, Geant4 provides also an optical physics process category, allowing the simulation of the production and propagation of light. Such capabilities are well tailored for the simulation of optics systems namely in cosmic-rays experiments based in the detection of Cherenkov and fluorescence light. The use of Geant4 as an engineering tool for the optics design and simulation of Fresnel lens systems is discussed through a specific example. It is thus possible to implement a realistic end-to-end simulation of a physics experiment using Fresnel lenses in the framework of Geant4     

CANDU反应堆物理程序和方法

简要介绍了加拿大原子能公司目前用于ＣＡＮＤＵ反应物理设计和分析的计算机程序和方法,对栅元,超栅元和堆芯三种计算方法及相应的计算机程序进行了讨论。对物理分析中每 理论表达和应用的求解方法也作了说明。     

DEMO design activities in the broader approach under Japan/EU collaboration

The DEMO design studies in the BA (broader approach in the field of fusion energy) are being conducted by the DEMO Design Activity unit of International Fusion Energy Research Centre for the broader approach (BA) and the Home Teams in EU and Japan since 2011. The activity covers most of the critical issues on the DEMO design. Emphasis during the last two years was on studies to develop the best embodiment of a tokamak as a power reactor consistent with credible operating scenarios and feasible engineering solutions to critical design issues. The technical activities have focused on, for example, plasma physics for DEMO plants, divertor physics and technology, in-vessel components, maintenance schemes and safety research.     

基于蒙特卡罗方法的微型钠冷快堆堆芯物理设计计算

应用MCNP-4C程序为微型钠冷快堆(MFR)概念设计建立了精确的物理计算模型,并对其临界物理特性、中子注量率分布、功率分布和反应性控制进行详细计算.结果表明:MFR的基本物理特性满足堆芯物理设计要求和设计目标,堆芯功率密度和中子注量率分布均匀合理;控制系统能实现安全有效的反应性平衡,满足反应堆长期运行的需要.     

CARR用U-Mo合金燃料的堆芯物理方案研究

U-Mo合金燃料具有铀密度高、辐照稳定性好和后处理简单等优点,是未来研究堆燃料的理想选择。在保持中国先进研究堆(CARR)主体结构不变的基础上,使用合适的U-Mo合金燃料替换CARR现有燃料,进行堆芯方案初步研究。通过对中子注量率、循环长度等关键参数的对比分析,给出了较优的堆芯物理设计方案。该堆芯物理方案具有更好的设计参数,并可节省大量的燃料经费支出,提高了反应堆运营的经济性。     

An advanced computational algorithm for systems analysis of tokamak power plants

A new computational algorithm for tokamak power plant system analysis is being developed for the ARIES project. The objective of this algorithm is to explore the most influential parameters in the physical, technological and economic trade space related to the developmental transition from experimental facilities to viable commercial power plants. This endeavor is being pursued as a new approach to tokamak systems studies, which examines an expansive, multi-dimensional trade space as opposed to traditional sensitivity analyses about a baseline design point. The new ARIES systems code consists of adaptable modules which are built from a custom-made software toolbox using object-oriented programming. The physics module captures the current tokamak physics knowledge database including modeling of the most-current proposed burning plasma experiment design (FIRE). The engineering model accurately reflects the intent and design detail of the power core elements including accurate and adjustable 3D tokamak geometry and complete modeling of all the power core and ancillary systems. Existing physics and engineering models reflect both near-term as well as advanced technology solutions that have higher performance potential. To fully assess the impact of the range of physics and engineering implementations, the plant cost accounts have been revised to reflect a more functional cost structure, supported by an updated set of costing algorithms for the direct, indirect, and financial cost accounts. All of these features have been validated against the existing ARIES-AT baseline case. The present results demonstrate visualization techniques that provide an insight into trade space assessment of attractive steady-state tokamaks for commercial use.     

Research Status and Prospect of Muon Physics and Technique

Muon physics and the application of muon technique is an interdisciplinary research which involves particle physics, material science, condensed matter physics, biomolecular science, and archaeology. Many important researches have been done and published in these areas by scientists from North America, Europe, and Japan. Due to the lack of accelerator-based muon source in China, Chinese research groups in these fields mainly rely on overseas muon facilities or on joining international collaborations. Some recent major progress on muon physics and muon technique application, and the prospects of the design, construction, and application of the accelerator-based muon source in China were reported in this paper.     

大亚湾核电站第九循环堆芯换料设计

大亚湾核电站第九循环堆芯是自提高燃产组件富集度后实现18个月换料的第一个循环堆芯。堆芯换料设计采用SCIENCE核程序包进行计算，辅以HADES－II处理程序，自动生成一维模型和综合法程序输入数据，并且自动生成换料设计报告。本报告介绍了堆芯换料设计需提交给核电站的设计文件和所用的计算机辅助，并对启动物理试验实测值与设计预计值进行了比较分析。     

缪子科学技术前沿及未来发展

缪子物理和缪子应用技术研究是涉及粒子物理、材料科学、凝聚态物理、生物分子、考古学等众多学科的国际前沿交叉研究领域。目前北美、欧洲及日本均在这一领域做出了众多重要成果。由于加速器条件限制,目前国内尚未系统开展加速器缪子方面的实验,相关领域的研究团队主要依托国外装置或参与国际合作开展研究。本文综述性报道了近年国际上开展的几项主要缪子物理科学研究与缪子应用技术进展,并展望了国内在缪子源设计、建设及应用方面的科学前景。     

秦山核电厂堆物理设计中的计算程序及其校验概况

描述了秦山核电厂堆物理设计中应用的计算程序及其计算结果与实测值的比较。结果表明,理论计算值与实验测量值符合良好。最后说明了这些计算程序的某些特点。     

大亚湾核电站第十循环堆芯换料设计

大亚湾核电站第十循环堆芯是自提高燃料组件富集度后实现18个月燃料循环的第二个循环堆芯。堆芯换料设计采用SCIENCE核程序包进行计算,辅以HADESⅡ处理程序,自动生成一维模型和综合法程序输入数据,并且自动生成换料设计报告。报告介绍了堆芯换料设计须提交给核电站的设计文件和所用的计算机软件,并对启动物理试验实测值与设计预计值进行了比较分析。     

A generalized perturbation theory program for CANDU core analysis

A generalized perturbation program GENOVA has been developed for the purpose of various applications to Canada deuterium uranium (CANDU) reactor physics analyses. The program was developed under the framework of CANDU physics design and analysis code RFSP. The generalized perturbation method was implemented to estimate the power distribution in conjunction with the zone controller level. The numerical algorithm of the generalized perturbation method was verified by a simple 2×2 node problem. The capability of predicting the zone controller level was validated for a CANDU-6 reactor refueling problem. GENOVA is compatible with the current CANDU physics design code and, therefore, it can be used for advanced CANDU core analysis and fuel development in the future.