TDYNO: Fluctuation Dynamo, Heat Transport, and Ion Acceleration in Magnetized Turbulence

TDYNO：磁化湍流中的脉动发电机、热传输和离子加速

• 批准号: 2308844
• 负责人: Petros Tzeferacos
• 金额: $ 55万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2308844&HistoricalAwards=false
• 关键词: TDYNO; Fluctuation; Dynamo; Heat; Transport

This award supports a laboratory-based study of astrophysical plasma turbulence using simulations and high power laser facilities. Magnetized plasma turbulence, the stochastic twisting and tangling of magnetic fields in the turbulent matter of galaxy clusters, is currently the best working hypothesis to account for cosmic magnetic fields. Stochastic magnetic fields are theorized to be responsible for regulating heat conduction in galaxy cluster cores; and magnetized turbulence plays a key role in the transport and energization of cosmic rays. The emergence of high-power lasers and high performance computing have radically changed the way these processes can be studied, enabling new opportunities to recreate and model astrophysically relevant magnetized plasmas in the laboratory. The TDYNO (turbulent dynamo) collaboration, co-led by the University of Rochester and the University of Oxford and supported by this award, is studying the fundamental properties of magnetized turbulence and the astrophysical processes it mediates through a combination of high-fidelity numerical simulations with the FLASH code and laser-driven experiments at world-class laser facilities.This project builds on the recent achievements of the TDYNO collaboration and enables the design, execution, and interpretation of novel laser-driven laboratory astrophysics experiments at the Omega Laser Facility at the Laboratory for Laser Energetics, the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory, and the GSI Helmholtz Centre for Heavy Ion Research. The experiments exploit the mature and versatile TDYNO experimental platform, which will be tailored through FLASH design simulations to (1) answer fundamental questions pertinent to the onset and decay of magnetized turbulence and turbulent dynamo (Omega), (2) measure and bracket how heat is transported in strongly magnetized turbulent plasmas (NIF), and (3) characterize the mechanisms behind the energization of ions in stochastic magnetic fields (GSI). In doing so, the project contributes to the goals of NSF's "Windows on the Universe: The Era of Multi-Messenger Astrophysics" program. The project supports research thrusts that are of broad interest to the plasma physics and astrophysics communities and provides unique training opportunities to several graduate students and postdoctoral scholars at the University of Rochester and the University of Oxford.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项支持使用模拟和高功率激光设施的基于实验室的天体等离子体湍流研究。 磁化等离子体的湍流，Galaxy簇湍流物质中磁场的随机扭曲和缠结，目前是考虑宇宙磁场的最佳工作假设。将随机磁场理论化为负责调节星系群核心的热传导。磁化的湍流在宇宙射线的运输和能量中起关键作用。高功率激光器和高性能计算的出现从根本上改变了这些过程的研究方式，从而有助于在实验室重新创建和建模天体相关的磁化等离子体。由罗切斯特大学和牛津大学共同领导的Tdyno（动荡的发电机）合作，并得到了该奖项的支持，正在研究磁化湍流的基本属性，以及它通过在世界范围内构建了闪光代码和激光驱动的实验，它通过高利润的数值模拟来介导的天体物理过程。 Tdyno协作并可以在欧米茄激光器设施（Laser Laser Energetics），Lawrence Livermore National Laboratory的国家点火设施（NIF）和GSI Helmholtz中心进行重型离子研究中的国家点火设施（NIF），在激光器能量实验室（NIF）的欧米茄激光器设施和重型离子研究中的新型激光驱动实验室天体物理学实验的设计，执行和解释。该实验利用了成熟和多功能的TDYNO实验平台，该平台将通过闪光设计模拟量身定制，以（1）回答与磁化的湍流和湍流和湍流（Omega）的发作和衰减有关的基本问题，（2）量子和支架如何在强烈的磁性速度（NIF）（nif）（nif）（nif）（3）中（3）的机制（3），（3）随机磁场（GSI）。在这样做的过程中，该项目为NSF的“宇宙窗口：多门童天体物理学时代”计划的目标做出了贡献。该项目支持血浆物理学和天体物理学社区广泛关注的研究，并为罗切斯特大学和牛津大学的几位研究生和博士后学者提供了独特的培训机会。该奖项反映了NSF的法规任务，并认为通过基金会的知识优点和广泛的criter scritia criters criter criter criter criter criter criteria criter criteria criteria criteria criteria criteria criteria crititia criteria criteria均值得一提。