Core tungsten radiation diagnostic calibration by small shell pellet injection in the DIII-D tokamak

Hollmann, Eric M.; Commaux, Nicolas; Shiraki, Daisuke; Alexander, Neil; Bykov, Igor; Moser, Auna L.; Thomas, Dan M.; Victor, Brian S.

doi:10.1063/1.5005170

Core tungsten radiation diagnostic calibration by small shell pellet injection in the DIII-D tokamak

Journal Article · Wed Oct 04 00:00:00 EDT 2017 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.5005170· OSTI ID:1409370

Hollmann, Eric M. ^[1]; Commaux, Nicolas ^[2]; Shiraki, Daisuke ^[2]; Alexander, Neil ^[3]; Bykov, Igor ^[4]; Moser, Auna L. ^[3]; Thomas, Dan M. ^[3]; Victor, Brian S. ^[5]

Univ. of California, San Diego, CA (United States); General Atomics
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
General Atomics, San Diego, CA (United States)
Univ. of California, San Diego, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Injection of small (OD = 0.8 mm) plastic pellets carrying embedded smaller (10 μg) tungsten grains is used to check calibrations of core tungsten line radiation diagnostics in support of the 2016 tungsten rings campaign in the DIII-D tokamak. The total (1 eV – 10 keV) and soft x-ray (1 keV – 10 keV) brightnesses we observed were found to be reasonably well (< factor 2) predicted using existing calibration factors and rate calculations. Individual core (EUV/SXR) tungsten line brightnesses appear to be somewhat less reliable (factor 2-4) for prediction of core tungsten concentration.

View Accepted Manuscript (DOE)

Research Organization:: General Atomics, San Diego, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: AC05-00OR22725; AC52-07NA27344; FC02-04ER54698; FG02-07ER54917

OSTI ID:: 1409370

Alternate ID(s):: OSTI ID: 1396637
OSTI ID: 1491628

Report Number(s):: LLNL-JRNL--752186

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 88; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (32)

Theoretical calculation of the transition spectra of highly charged tungsten ions in the EUV region Rhee, Yong-Joo; Kwon, Duck-Hee International Journal of Mass Spectrometry, Vol. 271, Issue 1-3 https://doi.org/10.1016/j.ijms.2007.10.009	journal	April 2008
Tungsten transport and accumulation in JT-60U Nakano, T. Journal of Nuclear Materials, Vol. 415, Issue 1 https://doi.org/10.1016/j.jnucmat.2010.12.020	journal	August 2011
Suppression of tungsten accumulation during ELMy H-mode by lower hybrid wave heating in the EAST tokamak Zhang, L.; Morita, S.; Xu, Z. Nuclear Materials and Energy, Vol. 12 https://doi.org/10.1016/j.nme.2017.01.009	journal	August 2017
Cretin—a radiative transfer capability for laboratory plasmas Scott, Howard A. Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 71, Issue 2-6 https://doi.org/10.1016/s0022-4073(01)00109-1	journal	October 2001
Principles of Plasma Spectroscopy Griem, Hans R. https://doi.org/10.1017/CBO9780511524578	book	January 1997
Soft x‐ray measurements from the PDX tokamak Silver, E. H.; Bitter, M.; Brau, K. Review of Scientific Instruments, Vol. 53, Issue 8 https://doi.org/10.1063/1.1137135	journal	August 1982
2D tomography with bolometry in DIII‐D ^a) Leonard, A. W.; Meyer, W. H.; Geer, B. Review of Scientific Instruments, Vol. 66, Issue 2 https://doi.org/10.1063/1.1146006	journal	February 1995
Quantitative spectroscopy of x-ray lines and continua in Tokamaks Peacock, N. J.; Barnsley, R.; Lawson, K. D. Review of Scientific Instruments, Vol. 68, Issue 4 https://doi.org/10.1063/1.1147983	journal	April 1997
Experimental setup for tungsten transport studies at the NSTX tokamak Clementson, J.; Beiersdorfer, P.; Roquemore, A. L. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3499607	journal	October 2010
Soft x-ray array system with variable filters for the DIII-D tokamak Hollmann, E. M.; Chousal, L.; Fisher, R. K. Review of Scientific Instruments, Vol. 82, Issue 11 https://doi.org/10.1063/1.3660816	journal	November 2011
Tracer-encapsulated solid pellet injection system Sudo, Shigeru; Tamura, Naoki Review of Scientific Instruments, Vol. 83, Issue 2 https://doi.org/10.1063/1.3681447	journal	February 2012
The influence of an ITER-like wall on disruptions at JET de Vries, P. C.; Baruzzo, M.; Hogeweij, G. M. D. Physics of Plasmas, Vol. 21, Issue 5 https://doi.org/10.1063/1.4872017	journal	May 2014
Tungsten impurity transport experiments in Alcator C-Mod to address high priority research and development for ITERa) Loarte, A.; Reinke, M. L.; Polevoi, A. R. Physics of Plasmas, Vol. 22, Issue 5 https://doi.org/10.1063/1.4921253	journal	May 2015
Equilibrium pellet and liquid jet shape under high ablation pressures Parks, P. B.; Rosenbluth, M. N. Physics of Plasmas, Vol. 5, Issue 5 https://doi.org/10.1063/1.872798	journal	May 1998
Spectroscopic investigations of tungsten in the EUV region and the determination of its concentration in tokamaks Asmussen, K.; Fournier, K. B.; Laming, J. M. Nuclear Fusion, Vol. 38, Issue 7 https://doi.org/10.1088/0029-5515/38/7/302	journal	July 1998
Calculation and experimental test of the cooling factor of tungsten Pütterich, T.; Neu, R.; Dux, R. Nuclear Fusion, Vol. 50, Issue 2 https://doi.org/10.1088/0029-5515/50/2/025012	journal	January 2010
Impact of W on scenario simulations for ITER Hogeweij, G. M. D.; Leonov, V.; Schweinzer, J. Nuclear Fusion, Vol. 55, Issue 6 https://doi.org/10.1088/0029-5515/55/6/063031	journal	May 2015
Development of quantitative atomic modeling for tungsten transport study using LHD plasma with tungsten pellet injection Murakami, I.; Sakaue, H. A.; Suzuki, C. Nuclear Fusion, Vol. 55, Issue 9 https://doi.org/10.1088/0029-5515/55/9/093016	journal	August 2015
Spectroscopy of highly charged tungsten ions relevant to fusion plasmas Biedermann, Christoph; Radtke, Rainer; Seidel, Robert Physica Scripta, Vol. T134 https://doi.org/10.1088/0031-8949/2009/t134/014026	journal	May 2009
A spectral line survey from 17.5–250 nm of plasmas created in a magnetic confinement device McCarthy, K. J.; Zurro, B.; Hollmann, E. M. Physica Scripta, Vol. 91, Issue 11 https://doi.org/10.1088/0031-8949/91/11/115601	journal	September 2016
Ionization state, excited populations and emission of impurities in dynamic finite density plasmas: I. The generalized collisional–radiative model for light elements Summers, H. P.; Dickson, W. J.; O'Mullane, M. G. Plasma Physics and Controlled Fusion, Vol. 48, Issue 2 https://doi.org/10.1088/0741-3335/48/2/007	journal	January 2006
Studying the impurity charge and main ion mass dependence of impurity confinement in ECR-heated TJ-II stellarator Zurro, B.; Hollmann, E. M.; Baciero, A. Plasma Physics and Controlled Fusion, Vol. 56, Issue 12 https://doi.org/10.1088/0741-3335/56/12/124007	journal	November 2014
Disentangling the emissions of highly ionized tungsten in the range 4–14 nm Pütterich, T.; Neu, R.; Biedermann, C. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 38, Issue 16 https://doi.org/10.1088/0953-4075/38/16/017	journal	August 2005
EUV spectra of highly-charged ions W ⁵⁴⁺ –W ⁶³⁺ relevant to ITER diagnostics Ralchenko, Yu; Draganic, I. N.; Tan, J. N. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 41, Issue 2 https://doi.org/10.1088/0953-4075/41/2/021003	journal	January 2008
Tungsten spectra recorded at the LHD and comparison with calculations Harte, C. S.; Suzuki, C.; Kato, T. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 43, Issue 20 https://doi.org/10.1088/0953-4075/43/20/205004	journal	October 2010
Determination of tungsten and molybdenum concentrations from an x-ray range spectrum in JET with the ITER-like wall configuration Nakano, T.; Shumack, A. E.; Maggi, C. F. Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 48, Issue 14 https://doi.org/10.1088/0953-4075/48/14/144023	journal	May 2015
Experiences With Tungsten Plasma Facing Components in ASDEX Upgrade and JET Neu, Rudolf Ludwig; Brezinsek, Sebastijan; Beurskens, Marc IEEE Transactions on Plasma Science, Vol. 42, Issue 3 https://doi.org/10.1109/tps.2014.2298253	journal	March 2014
Electron-beam ion-trap spectra of tungsten in the EUV Utter, S. B.; Beiersdorfer, P.; Träbert, E. Canadian Journal of Physics, Vol. 80, Issue 12 https://doi.org/10.1139/p02-132	journal	December 2002
Anticipated X-ray and VUV spectroscopic data from ITERwith appropriate diagnostic instrumentation Peacock, N. J.; O’Mullane, M. G.; Barnsley, R. Canadian Journal of Physics, Vol. 86, Issue 1 https://doi.org/10.1139/p07-140	journal	January 2008
Multichannel grazing-incidence spectrometer for plasma impurity diagnosis: SPRED Fonck, R. J.; Ramsey, A. T.; Yelle, R. V. Applied Optics, Vol. 21, Issue 12 https://doi.org/10.1364/ao.21.002115	journal	January 1982
Rh i isoelectronic sequence observed from Er^23+ to Pt^33+ Sugar, Jack; Rowan, William L.; Kaufman, Victor Journal of the Optical Society of America B, Vol. 10, Issue 11 https://doi.org/10.1364/josab.10.001977	journal	January 1993
Tungsten Data for Current and Future Uses in Fusion and Plasma Science Beiersdorfer, Peter; Clementson, Joel; Safronova, Ulyana Atoms, Vol. 3, Issue 2 https://doi.org/10.3390/atoms3020260	journal	June 2015

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