Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade
Overview of physics results from MAST towards ITER/DEMO and the MAST Upgrade
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MAST 向 ITER/DEMO 和 MAST 升级的物理结果概述
DOI：
10.1088/0029-5515/53/10/104008
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发表时间：
2013
期刊：
影响因子：
3.3
通讯作者：
Meyer H
中科院分区：
文献类型：
--
作者：
Meyer H
Mega Ampère Spherical Tokamak（MAST）的新诊断，建模和工厂能力在ITER/DEMO和即将到来的MAST升级的关键领域取得了重要成果，这是目前正在采购的未来ST设备走向聚变的一步。基座的微观稳定性分析突出了微撕裂模式和动力学气球模式对基座形成的潜在作用。已经证明了使用共振磁扰动的边缘局域模（ELM）的缓解对于环形模数n= 3，4，6，ELM频率增加高达9倍，与芯块加料兼容。缓解和自然ELM的峰值热通量遵循与ELM能量损失相同的线性趋势，并且示出了偏滤器区域中的第一ELM分辨T i测量。在L-H转换过程中的流动剪切和湍流动力学的测量表明，细丝喷发从等离子体边缘，而充分的流动剪切仍然存在。离轴中性束注入有助于大大减少由于鱼骨模式的快离子的再分布相比，轴上注入。低k离子尺度湍流已被测量L-模式和全球陀螺动力学模拟相比。对主要湍流时间尺度的统计分析表明，它们具有可比性，并且与湍流去相关时间合理相关。T e岛内部的新古典撕裂模式允许岛的演变分析，而无需假设特定的热通量模型。其他结果包括电流斜升期间电流剖面演变与极向场扩散方程解的差异、异常多普勒共振压缩Alfvén本征模研究、中断缓解研究和MAST升级的新偏滤器设计建模。新的三维电子伯恩斯坦合成成像显示出有前途的第一数据敏感的边缘电流分布和流量。
New diagnostic, modelling and plant capability on the Mega Ampère Spherical Tokamak (MAST) have delivered important results in key areas for ITER/DEMO and the upcoming MAST Upgrade, a step towards future ST devices on the path to fusion currently under procurement. Micro-stability analysis of the pedestal highlights the potential roles of micro-tearing modes and kinetic ballooning modes for the pedestal formation. Mitigation of edge localized modes (ELM) using resonant magnetic perturbation has been demonstrated for toroidal mode numbers n= 3, 4, 6 with an ELM frequency increase by up to a factor of 9, compatible with pellet fuelling. The peak heat flux of mitigated and natural ELMs follows the same linear trend with ELM energy loss and the first ELM-resolved T i measurements in the divertor region are shown. Measurements of flow shear and turbulence dynamics during L–H transitions show filaments erupting from the plasma edge whilst the full flow shear is still present. Off-axis neutral beam injection helps to strongly reduce the redistribution of fast-ions due to fishbone modes when compared to on-axis injection. Low-k ion-scale turbulence has been measured in L-mode and compared to global gyro-kinetic simulations. A statistical analysis of principal turbulence time scales shows them to be of comparable magnitude and reasonably correlated with turbulence decorrelation time. T e inside the island of a neoclassical tearing mode allow the analysis of the island evolution without assuming specific models for the heat flux. Other results include the discrepancy of the current profile evolution during the current ramp-up with solutions of the poloidal field diffusion equation, studies of the anomalous Doppler resonance compressional Alfvén eigenmodes, disruption mitigation studies and modelling of the new divertor design for MAST Upgrade. The novel 3D electron Bernstein synthetic imaging shows promising first data sensitive to the edge current profile and flows.
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影响因子：
3.1
作者：
G. Matthews;J. Contributors
通讯作者：
G. Matthews;J. Contributors
剪切流对热不稳定性非线性演化的影响
DOI：
10.1063/1.860682
发表时间：
1993
期刊：
Physics of fluids. B, Plasma physics
影响因子：
--
作者：
J. Leboeuf;L. Charlton;B. Carreras
通讯作者：
B. Carreras
MAST 中电子伯恩斯坦波发射的二维研究
影响因子：
0.9
作者：
V. Shevchenko;M. de Bock;S. Freethy;A. Saveliev;R. Vann
通讯作者：
R. Vann
使用 MAST 中子发射剖面监测仪观察快离子行为
影响因子：
3.3
作者：
M. Cecconello;S. Sangaroon;M. Turnyanskiy;S. Conroy;I. Wodniak;R. Akers;G. Ericsson
通讯作者：
G. Ericsson
MAST 快离子约束和电流分布控制研究
影响因子：
3.3
作者：
M. Turnyanskiy;D. Keeling;R. Akers;G. Cunningham;N. Conway;H. Meyer;Clive Michael;S. Pinches
通讯作者：
S. Pinches