John Caughman Scientist, Plasma Technology and Applications Contact CAUGHMANJB@ORNL.GOV All Publications Direct measurement of the transition from edge to core power coupling in a light-ion helicon source Plasma flow measurements in the Prototype-Material Plasma Exposure eXperiment (Proto-MPEX) and comparison with B2.5-Eirene modeling Power accounting of plasma discharges in the linear device Proto-MPEX Helicon plasma ion temperature measurements and observed ion cyclotron heating in proto-MPEX Developing the Science and Technology for the Material Plasma Exposure eXperiment (MPEX) Progress in magnet design activities for the material plasma exposure experiment Progress in the Development of a High Power Helicon Plasma Source for the Materials Plasma Exposure Experiment Plasma Source Development for Fusion Relevant Material Testing Plasma Fuelling with Cryogenic Pellets in the Stellarator TJ-II The development of the Material Plasma Exposure eXperiment MPEX... Pre-conceptual design activities for the materials plasma exposure experiment Heat flux estimates of power balance on Proto-MPEX with IR imaging Analysis of an Actively Cooled Window for High Power Helicon Plasma Source Pre-Conceptual Design Activities for the Materials Plasma Exposure Experiment... Solidification and Acceleration of Large Cryogenic Pellets Relevant for Plasma Disruption Mitigation... Applications of Doppler-Free Saturation Spectroscopy for Edge Physics Studies The Material Plasma Exposure eXperiment MPEX: pre-design, development and testing of source concept Cryogenic Considerations for Superconducting Magnet Design for the Material Plasma Exposure eXperiment... Electric Field Measurements of the LH Wave and ICRF Near-Field Utilizing Non-Perturbative Spectroscopic Techniques... Recent Developments in Support of the Shattered Pellet Technique for Disruption Mitigation Long Pulse EBW Start-up Experiments in MAST... Electric field determination in the plasma-antenna boundary of a lower-hybrid wave launcher in Tore Supra through dynamic Stark-effect spectroscopy Using X-mode L, R and O-mode reflectometry cutoffs to measure scrape-off-layer density profiles for upgraded ORNL reflectomet... Probing the plasma near high power wave launchers in fusion devices for static and dynamic electric fields... Results from Laboratory Testing of a New Four-Barrel Pellet Injector for the TJ-II Stellarator Pagination First page « First Previous page ‹‹ Page 1 Current page 2 Page 3 … Next page ›› Last page Last » Key Links ORCID Organizations Fusion and Fission Energy and Science Directorate Fusion Energy Division Fusion Nuclear Science, Technology, and Engineering Section Fusion Technology Group