Gas Puff Imaging Diagnostics of Edge Plasma Turbulence in Magnetic Fusion Devices

Zweben, S J; Terry, J L; Stotler, D P; Maqueda, R J

doi:10.11578/1562076

Title: Gas Puff Imaging Diagnostics of Edge Plasma Turbulence in Magnetic Fusion Devices

Dataset
Other Related Research

Abstract

Gas puff imaging (GPI) is a diagnostic of plasma turbulence which usesa puff of neutral gas at the plasma edge to increase the local visiblelight emission for improved space-time resolution of plasmafluctuations. This paper reviews gas puff imaging diagnostics of edgeplasma turbulence in magnetic fusion research, with a focus on theinstrumentation, diagnostic cross-checks, and interpretationissues. The gas puff imaging hardware, optics, and detectors aredescribed for about 10 GPI systems implemented over the past ~15years. Comparison of GPI results with other edge turbulence diagnosticresults are described and many common features are observed. Severalissues in the interpretation of GPI measurements are discussed, andpotential improvements in hardware and modeling are suggested.

Authors:

Zweben, S J; Terry, J L; Stotler, D P; Maqueda, R J

OSTI

Publication Date:: Sat Apr 01 00:00:00 EDT 2017

DOE Contract Number:: AC02-09CH11466

Research Org.:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Org.:: U. S. Department of Energy

Subject:: Gas puff imaging

OSTI Identifier:: 1562076

DOI:: https://doi.org/10.11578/1562076

Citation Formats


                    Zweben, S J, Terry, J L, Stotler, D P, and Maqueda, R J. Gas Puff Imaging Diagnostics of Edge Plasma Turbulence in Magnetic Fusion Devices.  United States: N. p., 2017. 
        Web.  doi:10.11578/1562076.

Copy to clipboard


                    Zweben, S J, Terry, J L, Stotler, D P, & Maqueda, R J. Gas Puff Imaging Diagnostics of Edge Plasma Turbulence in Magnetic Fusion Devices.  United States.  doi:https://doi.org/10.11578/1562076

Copy to clipboard


                    Zweben, S J, Terry, J L, Stotler, D P, and Maqueda, R J. 2017.  
"Gas Puff Imaging Diagnostics of Edge Plasma Turbulence in Magnetic Fusion Devices".  United States.  doi:https://doi.org/10.11578/1562076.  https://www.osti.gov/servlets/purl/1562076. Pub date:Sat Apr 01 00:00:00 EDT 2017

Copy to clipboard


                    
@article{osti_1562076,

  title        = {Gas Puff Imaging Diagnostics of Edge Plasma Turbulence in Magnetic Fusion Devices},

  author       = {Zweben, S J and Terry, J L and Stotler, D P and Maqueda, R J},

  abstractNote = {Gas puff imaging (GPI) is a diagnostic of plasma turbulence which usesa puff of neutral gas at the plasma edge to increase the local visiblelight emission for improved space-time resolution of plasmafluctuations. This paper reviews gas puff imaging diagnostics of edgeplasma turbulence in magnetic fusion research, with a focus on theinstrumentation, diagnostic cross-checks, and interpretationissues. The gas puff imaging hardware, optics, and detectors aredescribed for about 10 GPI systems implemented over the past ~15years. Comparison of GPI results with other edge turbulence diagnosticresults are described and many common features are observed. Severalissues in the interpretation of GPI measurements are discussed, andpotential improvements in hardware and modeling are suggested.},

  doi          = {10.11578/1562076},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sat Apr 01 00:00:00 EDT 2017},

  month        = {Sat Apr 01 00:00:00 EDT 2017}

}

Copy to clipboard

Dataset:

View Dataset

DOI: https://doi.org/10.11578/1562076

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Data Explorer and OSTI.GOV collections:

Invited Review Article: Gas puff imaging diagnostics of edge plasma turbulence in magnetic fusion devices

Journal Article Zweben, S. J. ; Terry, J. L. ; Stotler, D. P. ; ... - Review of Scientific Instruments
Invited Review Article: Gas puff imaging diagnostics of edge plasma turbulence in magnetic fusion devices

Journal Article Zweben, S. J. ; Terry, J. L. ; Stotler, D. P. ; ... - Review of Scientific Instruments

Gas puff imaging (GPI) is a diagnostic of plasma turbulence which uses a puff of neutral gas at the plasma edge to increase the local visible light emission for improved space-time resolution of plasma fluctuations. This paper reviews gas puff imaging diagnostics of edge plasma turbulence in magnetic fusion research, with a focus on the instrumentation, diagnostic cross-checks, and interpretation issues. The gas puff imaging hardware, optics, and detectors are described for about 10 GPI systems implemented over the past similar to 15 years. Comparison of GPI results with other edge turbulence diagnostic results is described, and many common featuresmore »« less
Deep modelling of plasma and neutral fluctuations from gas puff turbulence imaging

Dataset Mathews, A. ; Terry, J. L. ; Baek, S. G. ; ...

The role of turbulence in setting boundary plasma conditions is presently a key uncertainty in projecting to fusion energy reactors. To robustly diagnose edge turbulence, we develop and demonstrate a technique to translate brightness measurements of HeI line radiation into local plasma fluctuations via a novel integrated deep learning framework that combines neutral transport physics and collisional radiative theory for the $3^3 D - 2^3 P$ transition in atomic helium. The tenets for experimental validity are reviewed, illustrating that this turbulence analysis for ionized gases is transferable to both magnetized and unmagnetized environments with arbitrary geometries. Based upon fast cameramore »« less
Turbulence in Magnetized Pair Plasmas

Dataset Loureiro, Nuno F. ; Boldyrev, Stanislav

Alfvenic-type turbulence in strongly magnetized, low-beta pair plasmas is investigated. A coupled set of equations for the evolution of the magnetic and flow potentials are derived, covering both fluid and kinetic scales. In the fluid (MHD) range those equations are the same as for electron-ion plasmas, so turbulence at those scales is expected to be of the Alfvenic nature, exhibiting critical balance, dynamic alignment, and transition to a tearing mediated regime at small scales. The critical scale at which a transition to a tearing-mediated range occurs is derived, and the spectral slope in that range is predicted to bemore »« less
Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas

Dataset Frenje, J. A.

The field of nuclear diagnostics for Inertial Confinement Fusion (ICF) is broadly reviewed from its beginning in the seventies to present day. During this time, the sophistication of the ICF facilities and the suite of nuclear diagnostics have substantially evolved, generally a consequence of the efforts and experience gained on previous facilities. As the fusion yields have increased several orders of magnitude during these years, the quality of the nuclear-fusion-product measurements has improved significantly, facilitating an increased level of understanding about the physics governing the nuclear phase of an ICF implosion. The field of ICF has now entered an eramore »« less

Similar Records