Power Plant Concepts and Chamber Issues for Fast Ignition Direct-Drive Targets
Power Plant Concepts and Chamber Issues for Fast Ignition Direct-Drive Targets
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快速点火直接驱动目标的发电厂概念和室问题
DOI：
10.13182/fst06-a1166
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发表时间：
2006
影响因子：
0.9
通讯作者：
Y. Kozaki
中科院分区：
文献类型：
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作者：
Y. Kozaki
我们分析了基于直驱快速点火概念的激光聚变电站的设计窗口，并研究了燃烧室技术问题和适合于发展其电站的小型激光聚变实验反应堆的可行性。评估了具有90至200毫焦耳聚变产额的发电厂和具有10毫焦耳聚变产额的实验反应堆[激光聚变实验反应堆(LFER)]的目标增益曲线，其中600千焦耳至1毫焦耳激光的聚变产额为90至200毫焦耳，内爆的聚变率为100 kJ，加热的聚变率为100千焦耳。快点火LFER可以产生比中心点火设计小一个数量级的聚变输出，因此我们可以使用一个相当小的实壁燃烧室来进行LFER的第一级工作。我们还可以预期大幅降低激光器的成本，尽管对于加热激光器，我们必须开发一种长寿命的最终光学系统。利用快点火直驱靶，我们可以设计一个小型~300 MW(电)反应堆，聚变脉冲能量为200mJ，重复率为4 Hz。较小的脉冲能量减轻了腔壁和最终光学元件上的脉冲负载；然后，我们可以灵活地使用多个反应堆模块来设计大型1200 MW(电力)模块化工厂。我们确定了液壁和固壁燃烧室的问题，并提出了用于发电厂(Koyo-Fast)和使用快速点火直接驱动锥形靶的实验反应堆的基本概念。
Abstract We have analyzed the design windows for laser fusion power plants based on direct-drive fast ignition concepts and have examined the issues of chamber technologies and the feasibility of a small laser fusion experimental reactor suitable for developing their power plants. Target gain curves are assessed for power plants having 90- to 200-MJ fusion yields with 600-kJ to 1-MJ lasers, and for an experimental reactor [the laser fusion experimental reactor (LFER)], having a 10-MJ fusion yield with a 200-kJ laser, i.e., 100 kJ for implosion and 100 kJ for heating. The fast ignition LFER can produce its fusion output approximately one order of magnitude smaller than that of the central ignition design, so that we can use a rather small solid-wall chamber for the first stage of the LFER operation. We can also expect to decrease laser cost drastically, although for the heating laser we must develop a long-life final optics system. Using fast ignition direct-drive targets, we could design a smaller ~300-MW(electric) reactor, with 200-MJ fusion pulse energy and 4-Hz repetition rates. The smaller pulse energies mitigate pulse loads on the chamber walls and the final optics; then, we can flexibly design large 1200-MW(electric) modular plants by using multiple reactor modules. We identified the issues of liquid-wall and solid-wall chambers and proposed basic reactor concepts for a power plant (KOYO-Fast) and an experimental reactor using fast ignition direct-drive cone targets.