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The Large Helical Device (大型ヘリカル装置, Ōgata Herikaru Sōchi) (LHD) is a fusion research device located in Toki, Gifu, Japan. It is operated by the National Institute for Fusion Science, and is the world's second-largest superconducting stellarator, after Wendelstein 7-X. The LHD employs a heliotron magnetic field originally developed in Japan.
The analysis highlights History and Science as prominent areas in the source structure around Large Helical Device.
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The extracted context around Large Helical Device shows recurring relationship patterns in the source. For example, Large Helical Device → Christmas Day, Design, MW, The Large Helical Device, Using Another extracted example is Large Helical Device → National Institute for Fusion Science. Use these groups to spot repeated connection types before inspecting the individual relationships.
Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
helical plasma lhd fusion large field divertor japan research device exhaust system national heliotron uses heat toki institute science magnetic
TTTA extracted 12 structured relationships around Large Helical Device. Examples in this analysis include Large Helical Device → Affiliation → National Institute for Fusion Science and Large Helical Device → Device type → Heliotron. The table shows each extracted connection, where it came from and its confidence.
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Large Helical Device | Affiliation | National Institute for Fusion Science | 1.00 | infobox |
| Large Helical Device | Device type | Heliotron | 1.00 | infobox |
| Large Helical Device | Location | Toki, Japan | 1.00 | infobox |
| Large Helical Device | Magnetic field | 3.0 T (30,000 G) | 1.00 | infobox |
| Large Helical Device | Major radius | 3.9 m (13 ft) | 1.00 | infobox |
| Large Helical Device | Minor radius | 0.6 m (2 ft 0 in) | 1.00 | infobox |
| Large Helical Device | Year(s) of operation | 1998–2025 | 1.00 | infobox |
| Large Helical Device | related to history | Design | 0.60 | section |
| Large Helical Device | related to history | MW | 0.60 | section |
| Large Helical Device | related to history | Using | 0.60 | section |
| Large Helical Device | related to history | The Large Helical Device | 0.60 | section |
| Large Helical Device | related to history | Christmas Day | 0.60 | section |
The concept neighborhoods around Large Helical Device bring nearby vocabulary together. In this analysis, examples include Large, Device and Helical. Use the clusters to find adjacent concepts and terminology that may deserve separate research.
For Large Helical Device, one of the stronger structural bridges in this analysis connects Large Helical Device with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.
TTTA analyzes the structure around Large Helical Device to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History & Science, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.
Source: Wikipedia — Large Helical Device · EN edition · Analysis: TopicsToTalkAbout