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首页> 外文会议>International Conference on Fusion Reactor Diagnostics >article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at:http://scitation.aip.org/termsconditions. Downloaded to IP:166.111.120.18 On:Fri, 07 Aug 2015 08:05:11 Improved Collective Thomson Scattering measurements of fast ions at ASDEX Upgrade
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article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at:http://scitation.aip.org/termsconditions. Downloaded to IP:166.111.120.18 On:Fri, 07 Aug 2015 08:05:11 Improved Collective Thomson Scattering measurements of fast ions at ASDEX Upgrade

机译：文章被版权保护，如文章所示。重用AIP内容符合以下条款：http：//scation.aip.org/termOrditions。下载到IP：166.111.120.18：周五，07 8月08:05:11改进了集体汤姆森散射测量的Asdex升级

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Understanding the behaviour of the confined fast ions is important in both current and future fusion experiments. These ions play a key role in heating the plasma and will be crucial for achieving conditions for burning plasma in next-step fusion devices. Microwave-based Collective Thomson Scattering (CTS) is well suited for reactor conditions and offers such an opportunity by providing measurements of the confined fast-ion distribution function resolved in space, time and 1D velocity space. We currently operate a CTS system at ASDEX Upgrade using a gyrotron which generates probing radiation at 105 GHz. A new setup using two independent receiver systems has enabled improved subtraction of the background signal, and hence the first accurate characterization of fast-ion properties. Here we review this new dual-receiver CTS setup and present results on fast-ion measurements based on the improved background characterization. These results have been obtained both with and without NBI heating, and with the measurement volume located close to the centre of the plasma. The measurements agree quantitatively with predictions of numerical simulations. Hence, CTS studies of fast-ion dynamics at ASDEX Upgrade are now feasible. The new background subtraction technique could be important for the design of CTS systems in other fusion experiments.
机译：了解狭窄的快速离子的行为在目前和未来的融合实验中都很重要。这些离子在加热等离子体中发挥关键作用，并且对于在下一步融合装置中实现燃烧燃烧的血浆条件至关重要。基于微波的集体汤姆森散射（CTS）非常适用于反应堆条件，并通过提供在空间，时间和1D速度空间中解决的限制快速离子分布函数的测量提供了这样的机会。我们目前在ASDEX升级中运行CTS系统，使用Gyrotron在105 GHz处产生探测辐射。使用两个独立接收器系统的新设置使能改进的后台信号减法，因此快速离子特性的第一精确表征。在这里，我们通过改进的背景表征，我们审查了新的双接收器CTS设置并提出了快速离子测量结果。这些结果是在没有NBI加热的情况下获得的，并且测量体积靠近等离子体的中心。测量值定量与数值模拟的预测相加。因此，在ASDEX升级时CTS对快速离子动力学的研究现在是可行的。新的背景减法技术对于在其他融合实验中的CTS系统设计可能是重要的。

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