A5066218319- Nuclear Physics and Applications
- Magnetic confinement fusion research
- Fusion materials and technologies
- Nuclear reactor physics and engineering
- Graphite, nuclear technology, radiation studies
- Atomic and Subatomic Physics Research
- Aquaculture disease management and microbiota
- Superconducting Materials and Applications
- Radioactivity and Radon Measurements
- Venomous Animal Envenomation and Studies
- Atomic and Molecular Physics
- Radioactive contamination and transfer
- Calpain Protease Function and Regulation
- Plasma Diagnostics and Applications
Oak Ridge National Laboratory
2015-2024
University of Southern California
1975-1981
The detection limit for helium (He) partial pressure monitoring via the Penning discharge optical emission diagnostic, mainly used tokamak divertor effluent gas analysis, is shown here to be possible He concentrations down 0.1% in predominantly deuterium effluents. This result from a dedicated laboratory study means that technique can now extended intrinsically (non-injected) produced as fusion reaction ash deuterium-tritium experiments. paper also examines threshold ionization mass...
The divertor-specific ITER Diagnostic Residual Gas Analyzer (DRGA) will provide essential information relating to DT fusion plasma performance. This includes pulse-resolving measurements of the fuel isotopic mix reaching pumping ducts, as well concentration helium generated ash reaction. In present baseline design, cluster sensors attached this diagnostic's differentially pumped analysis chamber assembly a radiation compatible version commercial quadrupole mass spectrometer, an optical gas...
The ITER Diagnostic Residual Gas Analyzer (DRGA) will measure the distribution of gas species, i.e., deuterium (D), tritium (T), and impurities, in divertor exhaust stream plasma periphery, with time resolution relevant to fusion plasma–wall particle dynamics. uniqueness DRGA, over previous implementations dynamics residual analysis, is an integrated approach, combining mass low-temperature plasma-activated optical spectroscopy, a differentially pumped analysis station. A further unique...
Increasing robustness of the ITER diagnostic residual gas analyzer (DRGA) is critical for potential control plasma heating and fuel-cycle processing. Robustness a requirement to have function. The DRGA multisensor system capable resolving isotopic compositions hydrogen helium as well other heavier elements compounds. divertor-specific intended measure composition gases in subdivertor region midplane. Its analysis station will be located port cell at divertor level. From there, it sample slip...
Exhaust gas analysis provides key information on fusion processes, divertor operation, and wall state in experiments future reactors. The diagnostic residual analyzer (DRGA) concept has been developed for ITER with a focus fast helium hydrogen isotope detection. first operation of the prototype DRGA (P-DRGA) at stellarator Wendelstein 7-X showed potential improvement terms magnetic sensor shielding, data acquisition automation, new additions to cluster sensors P-DRGA. More recently, Monte...