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Shattered pellet injection technology design and characterization for disruption mitigation experiments

机译：破坏缓解实验的破碎颗粒注射技术设计与表征

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The technology to form and shoot high-Z cryogenic solid pellets mixed with deuterium using a gas gun that are shattered upon injection into a plasma has been developed at Oak Ridge National Laboratory for mitigating disruptions. This technology has been selected as the basis for the baseline disruption mitigation system on ITER. The development of shattered pellet injection systems has progressed to be able to accelerate large pellets of pure argon and neon with or without including deuterium. Impact studies have been carried out at shallow angles to determine funnel performance in guiding pellets from multiple barrels into a common injection line and across pumping breaks. The characterization of the shattered spray has also progressed with fragment size measurements as a function of pellet speed showing a strong inverse relationship. Results of these studies are reported with implications for applications on existing and future tokamak devices.
机译：通过在注射喷射到等离子体中粉碎的气枪形成和拍摄与氘混合的高Z低温固体颗粒的技术已经在橡木岭国家实验室进行了缓解。该技术已被选为磨练基准中断缓解系统的基础。破碎的颗粒注入系统的发展已经进展，能够加速纯氩和氖的大颗粒，或没有包括氘。在浅角度下进行了影响研究，以确定从多个桶中的引导颗粒中的漏斗性能进入普通喷射管线和泵送断裂。由于颗粒速度的颗粒速度，碎片尺寸测量也进展了破碎的喷雾的表征。报告了这些研究的结果，对现有和未来Tokamak设备的应用有影响。

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