An upgrade to the DIII–D phase contrast imaging diagnostic implements low-noise optical heterodyning for radio frequency wave detection. The system allows detection of waves with frequencies up to 500 MHz, with continuous adjustability up to 100 MHz. The diagnostic provides absolutely calibrated, line-integrated plasma density fluctuation measurements with good wavenumber resolution.
Use Cases
- Analyzing plasma density fluctuations based on the line-integrated measurements.
- Studying radio frequency wave behavior in fusion plasmas based on the 500 MHz detection capability.
- Calibrating or benchmarking simulation models based on the absolutely calibrated measurements.
- Investigating wave-number spectra of plasma turbulence based on the described wavenumber resolution.
Strengths
- Implements absolutely calibrated measurements, providing a reliable quantitative baseline.
- Enables detection of radio frequency waves up to 500 MHz, covering a broad spectrum.
- Offers continuous frequency adjustability up to 100 MHz for flexible experimental tuning.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment for large-scale analysis.
- Description metadata is limited; actual data quality requires manual inspection after download.
Provenance
- Source
- Harvard Dataverse, authored by Jon C Rost.
- Collection Method
- Data likely originates from an experimental upgrade to the DIII–D phase contrast imaging diagnostic.
- Time Range
- null
- Freshness
- Last updated 2026-05-04 12:56:53; freshness should be verified.
- Geography
- null