通过深度学习预测受控聚变等离子体的破坏性不稳定性
Julian Kates-Harbeck1,2,3, Alexey Svyatkovskiy4,5, William Tang6,4
1Department of Physics, Harvard University, Cambridge, MA, USA. jkatesharbeck@g.harvard.edu.
Nature
|April 19, 2019
概括
一种新的深度学习方法可以准确预测核聚变反应堆中的故障, 这一进步对于未来核聚变发电厂的可靠运行至关重要.
科学领域:
- 核聚变能源
- 血物理
- 机器学习应用
背景情况:
- 磁性封闭的托卡马克反应堆有望提供可持续的清洁能源.
- 阻断了电力生产,损坏了部件.
- 对于像ITER这样的大型项目来说,准确的中断预测至关重要.
研究的目的:
- 开发一种先进的深度学习方法,用于预测托卡马克反应堆的中断.
- 改进现有的第一原则和经典机器学习方法.
- 能够对不同聚变机器进行可靠的干扰预测.
主要方法:
- 在高维实验数据上使用深度学习方法.
- 使用超级计算资源提高准确性和速度.
- 在DIII-D和联合欧洲Toros (JET) 托卡马克数据上训练模型.
主要成果:
- 这种深度学习方法证明了可靠的破坏预测能力.
- 实现了成功的跨机器预测,这是未来反应堆的关键要求.
- 启用了预测和长时间的警告,促进了反应堆的活跃控制.
结论:
- 深度学习为推进核聚变能源科学提供了强大的工具.
- 开发的方法显著提高了tokamaks的中断预测.
- 这种方法对于预测复杂的物理系统具有更广泛的意义.
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