High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal

Grierson, B. A.; Burrell, K. H.; Chrystal, C.; Groebner, R. J.; Haskey, S. R.; Kaplan, D. H.

doi:10.1063/1.4960604

Title: High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal

Abstract

A new high spatial resolution main-ion (deuterium) charge-exchange spectroscopy system covering the toka- mak boundary region has been installed on the DIII-D tokamak. Sixteen new edge main-ion CER sightlines have been combined with nineteen impurity sightlines in a tangentially viewing geometry on the DIII-D mid- plane with an interleaving design that achieves 8 mm inter-channel radial resolution for detailed profiles of main-ion temperature, velocity, charge-exchange emission and neutral beam emission. At the plasma bound- ary, we find a strong enhancement of the main-ion toroidal velocity that exceeds the impurity velocity by a factor of two. The unique combination of experimentally measured main-ion and impurity profiles provide a powerful quasi-neutrality constraint for reconstruction of tokamak H-mode pedestals.

Authors:

^[1];

^[2];

^[3]; Groebner, R. J. ^[2];

^[1]; Kaplan, D. H. ^[2]

Princeton Univ., Princeton, NJ (United States)
General Atomics, San Diego, CA (United States)
Oak Ridge Associated Universities, Oak Ridge, TN (United States)

Publication Date:: Mon Sep 12 00:00:00 EDT 2016

Research Org.:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); General Atomics, San Diego, CA (United States)

Sponsoring Org.:: USDOE

Contributing Org.:: General Atomics, P.O. Box 85608, San Diego, California 92186-5608, USA; Oak Ridge Associated Universities, Oak Ridge, Tennessee 37831, USA; B.A. Grierson, K.H. Burrell, C. Chrystal, R.J. Groebner, S.R. Haskey, D.H. Kaplan, "High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal", Rev. Sci. Instrum. 87, 11E545 (2016)

OSTI Identifier:: 1340075

Alternate Identifier(s):: OSTI ID: 1371902

Report Number(s):: 5275
Journal ID: ISSN 0034-6748; RSINAK; TRN: US1701646

Grant/Contract Number:: AC02-09CH11466; FC02-04ER54698

Resource Type:: Accepted Manuscript

Journal Name:: Review of Scientific Instruments

Additional Journal Information:: Journal Volume: 87; Journal Issue: 11; Conference: 21st Topical Conference on High-Temperature Plasma Diagnostics , Madison, WI (United States), 5-9 Jun 2016; Related Information: DIII-D data shown in this paper can be obtained in digital format by following the links at https://fusion.gat.com/global/D3D-DMP; Journal ID: ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; tokamaks

Citation Formats


                    Grierson, B. A., Burrell, K. H., Chrystal, C., Groebner, R. J., Haskey, S. R., and Kaplan, D. H. High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal.  United States: N. p., 2016. 
Web.  doi:10.1063/1.4960604.

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                    Grierson, B. A., Burrell, K. H., Chrystal, C., Groebner, R. J., Haskey, S. R., & Kaplan, D. H. High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal.  United States.  https://doi.org/10.1063/1.4960604

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                    Grierson, B. A., Burrell, K. H., Chrystal, C., Groebner, R. J., Haskey, S. R., and Kaplan, D. H. Mon .  
"High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal".  United States.  https://doi.org/10.1063/1.4960604.  https://www.osti.gov/servlets/purl/1340075.

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@article{osti_1340075,

  title        = {High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal},

  author       = {Grierson, B. A. and Burrell, K. H. and Chrystal, C. and Groebner, R. J. and Haskey, S. R. and Kaplan, D. H.},

  abstractNote = {A new high spatial resolution main-ion (deuterium) charge-exchange spectroscopy system covering the toka- mak boundary region has been installed on the DIII-D tokamak. Sixteen new edge main-ion CER sightlines have been combined with nineteen impurity sightlines in a tangentially viewing geometry on the DIII-D mid- plane with an interleaving design that achieves 8 mm inter-channel radial resolution for detailed profiles of main-ion temperature, velocity, charge-exchange emission and neutral beam emission. At the plasma bound- ary, we find a strong enhancement of the main-ion toroidal velocity that exceeds the impurity velocity by a factor of two. The unique combination of experimentally measured main-ion and impurity profiles provide a powerful quasi-neutrality constraint for reconstruction of tokamak H-mode pedestals.},

  doi          = {10.1063/1.4960604},

  journal      = {Review of Scientific Instruments},

  number       = 11,

  volume       = 87,

  place        = {United States},

  year         = {Mon Sep 12 00:00:00 EDT 2016},

  month        = {Mon Sep 12 00:00:00 EDT 2016}

}

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Works referenced in this record:

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journal, December 2011

deGrassie, J. S.; Müller, S. H.; Boedo, J. A.
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Luxon, J. L.
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Initial results of the high resolution edge Thomson scattering upgrade at DIII-D
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Eldon, D.; Bray, B. D.; Deterly, T. M.
Review of Scientific Instruments, Vol. 83, Issue 10
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Experimental Investigation of the Role of Fluid Turbulent Stresses and Edge Plasma Flows for Intrinsic Rotation Generation in DIII-D $H$ -Mode Plasmas
journal, March 2011

Müller, S. H.; Boedo, J. A.; Burrell, K. H.
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High spatial and temporal resolution visible spectroscopy of the plasma edge in DIII‐D
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Gohil, P.; Burrell, K. H.; Groebner, R. J.
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Kinetic neoclassical transport in the H-mode pedestal
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Battaglia, D. J.; Burrell, K. H.; Chang, C. S.
Physics of Plasmas, Vol. 21, Issue 7
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Active spectroscopic measurements of the bulk deuterium properties in the DIII-D tokamak (invited)
journal, October 2012

Grierson, B. A.; Burrell, K. H.; Chrystal, C.
Review of Scientific Instruments, Vol. 83, Issue 10
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Improved edge charge exchange recombination spectroscopy in DIII-D
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Chrystal, C.; Burrell, K. H.; Grierson, B. A.
Review of Scientific Instruments, Vol. 87, Issue 11
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Collisional excitation and emission of H _α Stark multiplet in fusion plasmas
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Marchuk, O.; Ralchenko, Yu; Janev, R. K.
Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 43, Issue 1
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Poloidally and radially resolved parallel D+ velocity measurements in the DIII-D boundary and comparison to neoclassical computations
journal, March 2011

Boedo, J. A.; Belli, E. A.; Hollmann, E.
Physics of Plasmas, Vol. 18, Issue 3
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Neoclassical poloidal and toroidal rotation in tokamaks
journal, August 1991

Kim, Y. B.; Diamond, P. H.; Groebner, R. J.
Physics of Fluids B: Plasma Physics, Vol. 3, Issue 8
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Measurements of the internal magnetic field on DIII-D using intensity and spacing of the motional Stark multiplet
journal, October 2008

Pablant, N. A.; Burrell, K. H.; Groebner, R. J.
Review of Scientific Instruments, Vol. 79, Issue 10
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Measurements of the deuterium ion toroidal rotation in the DIII-D tokamak and comparison to neoclassical theory
journal, May 2012

Grierson, B. A.; Burrell, K. H.; Heidbrink, W. W.
Physics of Plasmas, Vol. 19, Issue 5
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High speed measurements of neutral beam turn-on and impact of beam modulation on measurements of ion density
journal, October 2014

Grierson, B. A.; Burrell, K. H.; Crowley, B.
Review of Scientific Instruments, Vol. 85, Issue 10
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Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D
journal, September 2016

Haskey, S. R.; Grierson, B. A.; Burrell, K. H.
Review of Scientific Instruments, Vol. 87, Issue 11
DOI: 10.1063/1.4963148

Works referencing / citing this record:

Validation of the kinetic-turbulent-neoclassical theory for edge intrinsic rotation in DIII-D
journal, May 2018

Ashourvan, Arash; Grierson, B. A.; Battaglia, D. J.
Physics of Plasmas, Vol. 25, Issue 5
DOI: 10.1063/1.5018326

Active spectroscopy measurements of the deuterium temperature, rotation, and density from the core to scrape off layer on the DIII-D tokamak (invited)
journal, October 2018

Haskey, S. R.; Grierson, B. A.; Stagner, L.
Review of Scientific Instruments, Vol. 89, Issue 10
DOI: 10.1063/1.5038349

Main-ion intrinsic toroidal rotation across the ITG/TEM boundary in DIII-D discharges during ohmic and electron cyclotron heating
journal, April 2019

Grierson, B. A.; Chrystal, C.; Haskey, S. R.
Physics of Plasmas, Vol. 26, Issue 4
DOI: 10.1063/1.5090505

Main ion and impurity edge profile evolution across the L- to H-mode transition on DIII-D
journal, August 2018

Haskey, S. R.; Grierson, B. A.; Chrystal, C.
Plasma Physics and Controlled Fusion, Vol. 60, Issue 10
DOI: 10.1088/1361-6587/aad702

Simulation of neutron emission in neutral beam injection heated plasmas with the real-time code RABBIT
journal, June 2019

Weiland, M.; Bilato, R.; Collins, C. S.
Nuclear Fusion, Vol. 59, Issue 8
DOI: 10.1088/1741-4326/ab1edd

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Title: High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal

Abstract

Citation Formats

Plasma flow due to a loss-cone distribution centred around the outboard edge in DIII-D journal, December 2011

Reconstruction of current profile parameters and plasma shapes in tokamaks journal, November 1985

A design retrospective of the DIII-D tokamak journal, May 2002

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Neoclassical poloidal and toroidal rotation in tokamaks journal, August 1991

Measurements of the internal magnetic field on DIII-D using intensity and spacing of the motional Stark multiplet journal, October 2008

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Reconstruction of current profile parameters and plasma shapes in tokamaks
journal, November 1985

A design retrospective of the DIII-D tokamak
journal, May 2002

Initial results of the high resolution edge Thomson scattering upgrade at DIII-D
journal, October 2012

Experimental Investigation of the Role of Fluid Turbulent Stresses and Edge Plasma Flows for Intrinsic Rotation Generation in DIII-D $H$ -Mode Plasmas
journal, March 2011

High spatial and temporal resolution visible spectroscopy of the plasma edge in DIII‐D
journal, October 1990

Kinetic neoclassical transport in the H-mode pedestal
journal, July 2014

Active spectroscopic measurements of the bulk deuterium properties in the DIII-D tokamak (invited)
journal, October 2012

Improved edge charge exchange recombination spectroscopy in DIII-D
journal, August 2016

Collisional excitation and emission of H _α Stark multiplet in fusion plasmas
journal, December 2009

Poloidally and radially resolved parallel D+ velocity measurements in the DIII-D boundary and comparison to neoclassical computations
journal, March 2011

Neoclassical poloidal and toroidal rotation in tokamaks
journal, August 1991

Measurements of the internal magnetic field on DIII-D using intensity and spacing of the motional Stark multiplet
journal, October 2008

Measurements of the deuterium ion toroidal rotation in the DIII-D tokamak and comparison to neoclassical theory
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High speed measurements of neutral beam turn-on and impact of beam modulation on measurements of ion density
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Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D
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Validation of the kinetic-turbulent-neoclassical theory for edge intrinsic rotation in DIII-D
journal, May 2018

Active spectroscopy measurements of the deuterium temperature, rotation, and density from the core to scrape off layer on the DIII-D tokamak (invited)
journal, October 2018

Main-ion intrinsic toroidal rotation across the ITG/TEM boundary in DIII-D discharges during ohmic and electron cyclotron heating
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Main ion and impurity edge profile evolution across the L- to H-mode transition on DIII-D
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