Device Reliability Analysis of NNBI Beam Source System Based on Fault Tree
Source abstract
Abstract
Negative Ion Source Neutral beam Injection (NNBI), as a critical auxiliary heating system for magnetic confinement fusion devices, directly affects the plasma heating efficiency of tokamak devices through the reliability of its beam source system. The single-shot experiment constitutes a significant experimental program for NNBI. This study addresses the frequent equipment failures encountered by the NNBI beam source system during a cycle of experiments, employing fault tree analysis (FTA) to conduct a systematic reliability assessment. Utilizing the AutoFTA 3.9 software platform, a fault tree model of the beam source system was established. Minimal cut set analysis was performed to identify the system’s weak points. The research employed AutoFTA 3.9 for both qualitative analysis and quantitative calculations, obtaining the failure probabilities of critical components. Furthermore, the F-V importance measure and mean time between failures (MTBF) were applied to analyze the system. This provides a theoretical basis and practical engineering guidance for enhancing the operational reliability of the NNBI system. The evaluation methodology developed in this study can be extended and applied to the reliability analysis of other high-power particle acceleration systems.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Particle accelerators and beam dynamics · Fusion materials and technologies · Magnetic confinement fusion research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Safety Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
Institute of Energy, Hefei Comprehensive National Science Center (Anhui Energy Laboratory), Hefei 230031, China
Funding
Comprehensive Research Facility for Fusion Technology Program of China · The Natural Science Foundation of Anhui Province · Institute of Energy, Hefei Comprehensive National Science Center
References (30)
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