A multi-device database from the International Tokamak Physics Activity (ITPA) task TC-26, containing L–H transition data for hydrogen isotopes and mixtures. The data was compiled by an international team of researchers including E. Delabie and J.W. Hughes, with contributions from the ASDEX Upgrade, JET, and Alcator C-Mod tokamaks. The dataset was last updated on June 1, 2026.
Use Cases
- Developing empirical scaling laws for the L–H power threshold based on data from machines with metallic first walls.
- Analyzing the impact of magnetic configuration in the divertor on the threshold power, as mentioned in the description.
- Comparing the isotope mass scaling of the threshold power between carbon-based and metallic wall machines.
- Extrapolating power threshold predictions for ITER using the updated metal wall scaling parameters.
Strengths
- Data is sourced from three major tokamak devices: ASDEX Upgrade (AUG), JET, and Alcator C-Mod.
- Includes L–H transition data for all hydrogen isotopes and mixtures, including tritium and deuterium-tritium from recent JET campaigns.
- Motivated by reported reductions in power threshold of approximately 30% after switching to metallic walls, providing a clear research context.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- The description notes that the divertor configuration effect induces the largest uncertainty in extrapolation to ITER.
Provenance
- Source
- International Tokamak Physics Activity (ITPA) task TC-26, with data from ASDEX Upgrade, JET, and Alcator C-Mod.
- Collection Method
- Empirical data collection from tokamak discharges, compiled as part of an international research activity.
- Freshness
- Last updated 2026-06-01 17:44:22; freshness should be verified.