强流高功率nbi稳态运行模式下真空空间粒子分布的研究

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1、强流高功率NBI稳态运行模式下真空空间粒子分布的研究摘要高能中性束注入(Neutralbeaminjeetion,NBI)加热是托卡马克装置四种辅助加热手段(中性束注入、低杂波、离子回旋段波、电子回旋段波)中加热效率最高、物理机制最清楚的一种技术，被国际聚变界公认为最有效的加热手段之一。根据EAST-NBI的工作原理和结构特点以及EASAT-NBI系统气路的简化模型，分析中性束注入系统的各种气源，建立了EAS-NBI装置的物理模型和碰撞面的数学方程，应用M-C方法构建了真空室气体粒子运动的数学模型。以气源分析计算结果为模拟初始值，运用

2、Matlab软件对M-C模型进行数值计算，获得了中性化室气源、离子吞食器气源及综合两种气源状态下真空室空间粒子分布规律以及主真空室三个区域的平均压力变化曲线。通过与EAST-NBI实验装置的实验数据和国外同类装置的实验结果的对比，验证了模拟计算结果且满足EAST-NBI真空性能要求，表明模拟计算结果是可靠的，有实用价值。按照EAST-NBI的设计指标要求，根据模拟结果和EAST-NBI稳态运行的要求，在借鉴国际聚变界NBI研究的最新成果基础上，对EAST-NBI束线进行了总体设计，为EAST-NBI的研制提供工程指导。关键词：中性束注

3、入气源分析建模空间粒子分布模拟计算总体设计ParticleDistributionoftheVacuumofSpaceforNBIofHighcurrentandHighpowerintheSteady—stateOperationModeAbstractHigh—energyneutralbeaminjection(Neutralbeaminjection，NBDisoneoffourtokamakauxiliaryheatingmethods(neutralbeami巧eaion，lowerhybrid，ioncyclotronw

4、avesparagraph，sectionelectroncyclotronwaves)．Duetothehighestheatingefficiency,theclearlyphysicalmechanism，itisregardedasthemosteffectivehemingmethodbyinternationalfusioncommunity．Inthisthesis，thecompositionofgassourceswereanalyzedwithreferencetoEAST-NBlworkingprinciple，

5、fundamentalstructureandasimplifiedmodelofgassupplyingsystem，．ThephysicalmodelsofEAST-NBIandthemathematicalequationoftheplanecrash，aswellasthemathematicalmodelsofthegasparticlesinthevacuumchamberbasedonM-Cmethod，wereconstructed．Onbasisoftheairsourcesanalysis，theM-Cmodels

6、werecalculatedwiththeMatlabsoftware．Spatialdistributionofparticlesinthevacuumchamberandthecurvesofaveragepressureinthethreemainvacuumchamberwereobtained．ComparedwiththeexperimentaldataoftheEAST-NBIsystemandtheexperimentalresultsofthesimilarforeignequipment,thetheoretica

7、lmodelswerereliableandpractical，whichcouldmeettheEAST-NBIvacuumperformancerequirements．AccordingtothedesignrequirementsofEAST-NBI，thesteadyoperationrequirementsandthelatestresearchresultsofinternationalfusioncommunity，theoverallstructureofNBIWeredesignedbasedontheaboves

8、imulationresults，whichisusefulfortheengineeringguidanceofEAST-NBI．Keywords：Neutralbeaminjector=Analysisofair；M