3D real-time monitoring system for LHD plasma heating experiment

The java-based real-time monitoring system has been in use at the National Institute for Fusion Science, Japan, since the end of March 1988 to maintain stable operations. This system utilizes java technology to realize its platform-independent nature. The main programs are written as java applets and provide human-friendly interfaces. In order to enhance the systemʹs easy-recognition nature, a 3D feature is added. Since most of the system is written mainly in java language, we adopted java3D technology, which was easy to incorporate into the current running systems. With this 3D feature, the operator can more easily find the malfunctioning parts of complex instruments, such as LHD vacuum vessels. This feature is also helpful for recognizing physical phenomena. In this paper, we present an example in which the temperature increases of a vacuum vessel after NBI are visualized.