Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D

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

doi:10.1063/1.4963148

Title: Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D

Abstract

Recent completion of a thirty two channel main-ion (deuterium) charge exchange recombination spectroscopy (CER) diagnostic on the DIII-D tokamak enables detailed comparisons between impurity and main-ion temperature, density, and toroidal rotation. In a H-mode DIII-D discharge, these new measurement capabilities are used to provide the deuterium density profile, demonstrate the importance of profile alignment between Thomson scattering and CER diagnostics, and aid in determining the electron temperature at the separatrix. Sixteen sightlines cover the core of the plasma and another sixteen are densely packed towards the plasma edge, providing high resolution measurements across the pedestal and steep gradient region in H-mode plasmas. Extracting useful physical quantities such as deuterium density is challenging due to multiple photoemission processes. Furthermore, these challenges are overcome using a detailed fitting model and by forward modeling the photoemission using the FIDASIM code, which implements a comprehensive collisional radiative model.

Authors:

^[1];

^[2];

^[2]; Groebner, R. J. ^[2]; Kaplan, D. H. ^[2]; Pablant, N. A. ^[1];

^[3]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
General Atomics, San Diego, CA (United States)
Univ. of California, Irvine, CA (United States)

Publication Date:: Mon Sep 26 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

OSTI Identifier:: 1340076

Alternate Identifier(s):: OSTI ID: 1460558

Report Number(s):: 5322
Journal ID: ISSN 0034-6748; RSINAK; TRN: US1701608

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

Citation Formats


                    Haskey, S. R., Grierson, B. A., Burrell, K. H., Chrystal, C., Groebner, R. J., Kaplan, D. H., Pablant, N. A., and Stagner, L. Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D.  United States: N. p., 2016. 
Web.  doi:10.1063/1.4963148.

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                    Haskey, S. R., Grierson, B. A., Burrell, K. H., Chrystal, C., Groebner, R. J., Kaplan, D. H., Pablant, N. A., & Stagner, L. Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D.  United States.  https://doi.org/10.1063/1.4963148

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                    Haskey, S. R., Grierson, B. A., Burrell, K. H., Chrystal, C., Groebner, R. J., Kaplan, D. H., Pablant, N. A., and Stagner, L. Mon .  
"Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D".  United States.  https://doi.org/10.1063/1.4963148.  https://www.osti.gov/servlets/purl/1340076.

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@article{osti_1340076,

  title        = {Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D},

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

  abstractNote = {Recent completion of a thirty two channel main-ion (deuterium) charge exchange recombination spectroscopy (CER) diagnostic on the DIII-D tokamak enables detailed comparisons between impurity and main-ion temperature, density, and toroidal rotation. In a H-mode DIII-D discharge, these new measurement capabilities are used to provide the deuterium density profile, demonstrate the importance of profile alignment between Thomson scattering and CER diagnostics, and aid in determining the electron temperature at the separatrix. Sixteen sightlines cover the core of the plasma and another sixteen are densely packed towards the plasma edge, providing high resolution measurements across the pedestal and steep gradient region in H-mode plasmas. Extracting useful physical quantities such as deuterium density is challenging due to multiple photoemission processes. Furthermore, these challenges are overcome using a detailed fitting model and by forward modeling the photoemission using the FIDASIM code, which implements a comprehensive collisional radiative model.},

  doi          = {10.1063/1.4963148},

  journal      = {Review of Scientific Instruments},

  number       = 11,

  volume       = 87,

  place        = {United States},

  year         = {Mon Sep 26 00:00:00 EDT 2016},

  month        = {Mon Sep 26 00:00:00 EDT 2016}

}

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Works referenced in this record:

Measurements of the internal magnetic field using the B-Stark motional Stark effect diagnostic on DIII-D (invited)
journal, October 2010

Pablant, N. A.; Burrell, K. H.; Groebner, R. J.
Review of Scientific Instruments, Vol. 81, Issue 10
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Integrated modeling applications for tokamak experiments with OMFIT
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Reconstruction of current profile parameters and plasma shapes in tokamaks
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Nuclear Fusion, Vol. 25, Issue 11
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A design retrospective of the DIII-D tokamak
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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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Grierson, B. A.; Burrell, K. H.; Chrystal, C.
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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.
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Linear ideal MHD predictions for n = 2 non-axisymmetric magnetic perturbations on DIII-D
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Haskey, S. R.; Lanctot, M. J.; Liu, Y. Q.
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A Code that Simulates Fast-Ion D _α and Neutral Particle Measurements
journal, September 2011

Heidbrink, W. W.; Liu, D.; Luo, Y.
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High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal
journal, September 2016

Grierson, B. A.; Burrell, K. H.; Chrystal, C.
Review of Scientific Instruments, Vol. 87, Issue 11
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An upgrade of the magnetic diagnostic system of the DIII-D tokamak for non-axisymmetric measurements
journal, August 2014

King, J. D.; Strait, E. J.; Boivin, R. L.
Review of Scientific Instruments, Vol. 85, Issue 8
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The Plasma Boundary of Magnetic Fusion Devices
journal, January 2001

Ghendrih, Philippe
Plasma Physics and Controlled Fusion, Vol. 43, Issue 2
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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

Gyrokinetic GENE simulations of DIII-D near-edge L-mode plasmas
journal, September 2019

Neiser, T. F.; Jenko, F.; Carter, T. A.
Physics of Plasmas, Vol. 26, Issue 9
DOI: 10.1063/1.5052047

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

Measurements of radial profile of hydrogen and deuterium density in isotope mixture plasmas using bulk charge exchange spectroscopy
journal, September 2019

Ida, K.; Yoshinuma, M.; Yamasaki, K.
Review of Scientific Instruments, Vol. 90, Issue 9
DOI: 10.1063/1.5097030

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

Change in ion orbit loss, intrinsic rotation and particle pinch across the L–H transition in DIII-D plasmas
journal, March 2019

Piper, N. A.; Stacey, W. M.; Groebner, R. J.
Plasma Physics and Controlled Fusion, Vol. 61, Issue 5
DOI: 10.1088/1361-6587/ab0630

Deuterium temperature, drift velocity, and density measurements in non-Maxwellian plasmas at ASDEX Upgrade
journal, February 2018

Salewski, M.; Geiger, B.; Jacobsen, A. S.
Nuclear Fusion, Vol. 58, Issue 3
DOI: 10.1088/1741-4326/aaa6e1

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

Transition between Isotope-Mixing and Nonmixing States in Hydrogen-Deuterium Mixture Plasmas
journal, January 2020

Ida, K.; Nakata, M.; Tanaka, K.
Physical Review Letters, Vol. 124, Issue 2
DOI: 10.1103/physrevlett.124.025002

Gyrokinetic GENE simulations of DIII-D near-edge L-mode plasmas
text, January 2018

Neiser, T. F.; Jenko, F.; Carter, T. A.
arXiv
DOI: 10.48550/arxiv.1808.06607

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Title: Measurement of deuterium density profiles in the H-mode steep gradient region using charge exchange recombination spectroscopy on DIII-D

Abstract

Citation Formats

Measurements of the internal magnetic field using the B-Stark motional Stark effect diagnostic on DIII-D (invited) journal, October 2010

Integrated modeling applications for tokamak experiments with OMFIT journal, July 2015

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

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

Linear ideal MHD predictions for n = 2 non-axisymmetric magnetic perturbations on DIII-D journal, February 2014

A Code that Simulates Fast-Ion D α and Neutral Particle Measurements journal, September 2011

High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal journal, September 2016

An upgrade of the magnetic diagnostic system of the DIII-D tokamak for non-axisymmetric measurements journal, August 2014

The Plasma Boundary of Magnetic Fusion Devices journal, January 2001

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

Gyrokinetic GENE simulations of DIII-D near-edge L-mode plasmas journal, September 2019

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

Measurements of radial profile of hydrogen and deuterium density in isotope mixture plasmas using bulk charge exchange spectroscopy journal, September 2019

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

Change in ion orbit loss, intrinsic rotation and particle pinch across the L–H transition in DIII-D plasmas journal, March 2019

Deuterium temperature, drift velocity, and density measurements in non-Maxwellian plasmas at ASDEX Upgrade journal, February 2018

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

Transition between Isotope-Mixing and Nonmixing States in Hydrogen-Deuterium Mixture Plasmas journal, January 2020

Gyrokinetic GENE simulations of DIII-D near-edge L-mode plasmas text, January 2018

Measurements of the internal magnetic field using the B-Stark motional Stark effect diagnostic on DIII-D (invited)
journal, October 2010

Integrated modeling applications for tokamak experiments with OMFIT
journal, July 2015

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

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

Linear ideal MHD predictions for n = 2 non-axisymmetric magnetic perturbations on DIII-D
journal, February 2014

A Code that Simulates Fast-Ion D _α and Neutral Particle Measurements
journal, September 2011

High resolution main-ion charge exchange spectroscopy in the DIII-D H-mode pedestal
journal, September 2016

An upgrade of the magnetic diagnostic system of the DIII-D tokamak for non-axisymmetric measurements
journal, August 2014

The Plasma Boundary of Magnetic Fusion Devices
journal, January 2001

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

Gyrokinetic GENE simulations of DIII-D near-edge L-mode plasmas
journal, September 2019

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

Measurements of radial profile of hydrogen and deuterium density in isotope mixture plasmas using bulk charge exchange spectroscopy
journal, September 2019

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

Change in ion orbit loss, intrinsic rotation and particle pinch across the L–H transition in DIII-D plasmas
journal, March 2019

Deuterium temperature, drift velocity, and density measurements in non-Maxwellian plasmas at ASDEX Upgrade
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