Z箍缩驱动惯性约束聚变是有望实现聚变能源的一种重要技术途径。如何将驱动器电磁能有效转化为负载等离子体能量，是Z箍缩驱动惯性约束聚变研究中的关键问题。与传统Marx型驱动器相比，全真空传输型LTD驱动器与Z箍缩负载耦合更强、驱动器与负载组成系统的一体化设计要求更迫切。本项目拟开展全真空传输型LTD驱动器与Z箍缩负载能量耦合关系的理论与数值模拟研究，揭示驱动器与Z箍缩负载（特别是动态黑腔负载）能量耦合的物理规律。在此基础上，开展全真空传输型LTD驱动器与Z箍缩负载的匹配理论研究。此外，本项目将探索提高驱动器与负载能量耦合效率的新方案，通过控制传输线闭合改变驱动器放电过程中电路拓扑结构，促使回路电感储能进一步转化为负载能量，降低电磁能反射造成驱动器初级损伤。通过本项目研究，能够加深全真空传输型LTD驱动器与Z箍缩负载耦合系统的理解，为Z箍缩驱动惯性约束聚变能源系统设计中关键环节提供重要技术储备。

Z-pinch driven inertial confinement fusion (ICF) is a promising technical approach to nuclear fusion energy, and LTD (linear transformer driver) technology is reckoned as the chief scheme for constructing the next-generation repetitive high-power Z-pinch accelerators. How to convert the electromagnetic energy of the driver to the energy of the load plasma efficiently is a key issue for Z-pinch driven ICF investigation. Compared with the traditional Marx-type driver, the full vacuum transmission LTD driver couples strongly with the Z-pinch load, and the driver-and-load system urgently needs to be considered in a integrative way. This project will carry out theoretical and numerical investigation on energetic coupling between the full vacuum transmission LTD driver and the Z-pinch load, particularly on the coupling between the driver and the Z-pinch dynamic-hohlraum load. The underlying physics about the coupling between the driver and the load will be revealed. Based on the above investigation, theoretical investigation will be carried out to optimize the matching quality between the full vacuum transmission LTD driver and the Z-pinch load, and the numerical optimizing method will be established to upgrade the dynamic-hohlraum quality for a given driver. Besides, this project will explore a new scheme to improve energetic coupling efficiency between the driver and the load. By changing the topological structure of the discharging circuit of the driver-and-load system, the inductive energy stored in the circuit will be converted to the load energy more sufficiently, and the damage of the driver device from the energy reflection in the load region will also be alleviated. Through the investigation of this project, we can deepen the physical understanding on the coupling between the full vacuum transmission LTD driver and Z-pinch load, especially the Z-pinch dynamic-hohlraum load, establish theoretical guidance for the optimization of the driver parameters and the Z-pinch load parameters, and provide important technical reserve for the design of the future energy systems based on Z-pinch driven ICF.