In the fuel cycle of ITER and the future DEMO fusion reactors, which has many processes of tritium provision/ consumption/recovery/loss, such as, fueling, DT burning, vacuum pumping, purification, isotope separation and storage, detritiation, etc., tritium accountancy control will be required in its operation and safety management. In contrast to ITER, which will have frequent intervals between operations, a DEMO fusion reactor generating electricity must be operated continuously for long periods. This requires a dynamic tritium accountancy control, especially at the mass balance area boundary of the Tokamak including the vacuum vessel. To make a dynamic tritium accountancy system for a DEMO fusion reactor, based on our past work carried out during the ITER EDA, we are developing a new compact hydrogen isotope gas analysis system by the application of laser Raman spectroscopy advanced by technological progress in laser and detection systems. A prototype system has been made at TPL using a semiconductor laser with a Peltier-cooled CCD detector, with a simple optical system. Results of some preliminary tests being conducted to confirm sensitivity and accuracy under static and dynamic conditions are presented.

在ITER和未来的DEMO聚变反应堆的燃料循环中，has堆的提供/消耗/回收/损失有许多过程，例如加燃料，DT燃烧，真空泵送，提纯，同位素分离与存储，破坏等，在其运行和安全管理中将需要进行会计控制。与ITER相比，ITER之间的运行间隔会很频繁，而发电的DEMO聚变反应堆必须长时间连续运行。这需要动态的account会计控制，尤其是在包括真空容器的托卡马克的质量平衡区域边界处。根据我们在ITER EDA期间所做的工作，为DEMO聚变反应堆建立动态的make会计系统，我们正在利用激光拉曼光谱技术开发新的紧凑型氢同位素气体分析系统，该技术是由激光和检测系统的技术进步所推动的。在TPL上使用带有珀尔帖冷却CCD探测器的半导体激光器和简单的光学系统制造了一个原型系统。提出了一些初步测试的结果，以确认在静态和动态条件下的灵敏度和准确性。