DIII-D National Fusion Facility¶

The DIII-D National Fusion Facility is a U.S. Department of Energy user facility operated by General Atomics. Its tokamak and diagnostics support research on magnetically confined fusion plasmas.

TokEye was developed for DIII-D diagnostic signals. The project identifies fast magnetics, CO2 interferometry, electron cyclotron emission, and beam emission spectroscopy as DIII-D data types used with TokEye. See the TokEye preprint for research context.

Analyze an exported signal¶

Obtain and export a diagnostic signal using the facility's data tools. For a one-dimensional signal stored in a supported file, run:

tokeye run shot.npy --fs 200000 --format npz --output-dir results

Replace 200000 with the signal's actual sampling rate in hertz. If the file records its sampling rate, --fs can be omitted. The output bundle contains the segmentation and its axes; see outputs and input formats.

For ELM event detection and Alfvén-eigenmode instance detection, see the mode-analysis guide. These analyses have model and input requirements; inspect their results in the context of the diagnostic and experiment.

TokEye does not fetch DIII-D shots directly. Follow the facility's data-access procedures to obtain the signal before running it.