Laser-based diagnostics applications for plasma-surface interaction studies

H.J. van der Meiden, M.A. van den Berg, S. Brons, H. Ding, H.J.N. van Eck, M.H.J. 't Hoen, Juuso Karhunen, T.M. de Kruif, M. Laan, A. Lissovski, T.W. Morgan, P. Paris, K. Piip, M.J. van de Pol, R. Scannell, J. Scholten, P.H.M. Smeets, C. Spork, P.A. Zeijlmans van Emmichoven, R. ZoomersG. De Temmerman

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

Several laser based diagnostics are implemented on to the linear plasma generator Magnum-PSI, wherein ITER divertor relevant plasma-wall conditions are realized. Laser Induced Desorption Quadrupole Mass Spectroscopy (LID-QMS) and Laser Induced Breakdown Spectroscopy (LIBS) are installed to measure deuterium retention in plasma facing components. Combined with Thermal Desorption Spectroscopy, LID-QMS can be used to measure lateral retention profiles. LIBS is used to measure the surface composition qualitatively, after plasma exposure. An advanced Thomson Scattering (TS) system measures electron density, neutral density and electron temperature profiles (spatial resolution < 2 mm) across the maximum 100 mm plasma diameter. Very low electron density (9 * 10 18 m-3) can be measured within seconds with accuracies better than 6%. The minimum measurable electron density and temperature are ~ 1 * 1017 m-3 and ~ 0.07 eV, respectively. By virtue of the high system sensitivity, single pulse TS can be performed on high density pulsed plasmas (used for replicating ELMs). For measuring the ion temperature and flow velocity of the plasma a Collective TS system (CTS) is being built: the small Debye length of the Magnum-PSI plasma enables application of this method at relatively short laser wavelength. In a feasibility study it was shown that forward CTS with a seeded Nd:YAG laser operating at 1064 nm, can be applied at Magnum-PSI to measure ion temperature and axial velocity with an accuracy of < 8% and < 15%, respectively. Two high spectral resolution ( ~ 0.005 nm) detection schemes are applied simultaneously: an Echelle grating spectrometer (enabling profile measurements) and a system based on a Fabry-Perot etalon that enables wavelength scanning over its free spectral range, by tilting the device. The status and performance of the various laser based plasma and surface diagnostics will be reported along with experimental results.
Original languageEnglish
Article numberC11011
JournalJournal of Instrumentation
Volume8
Issue number11
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Fingerprint

Plasma diagnostics
Beam plasma interactions
surface reactions
Diagnostics
Plasma
Laser
Plasmas
Lasers
Thomson scattering
Interaction
lasers
Desorption
laser-induced breakdown spectroscopy
Laser induced breakdown spectroscopy
Carrier concentration
desorption
Laser-induced Breakdown Spectroscopy
Electron
ion temperature
Electron temperature

Keywords

  • Plasma diagnostics - charged-particle spectroscopy
  • Plasma diagnostics - interferometry
  • spectroscopy and imaging

Cite this

van der Meiden, H. J., van den Berg, M. A., Brons, S., Ding, H., van Eck, H. J. N., 't Hoen, M. H. J., ... De Temmerman, G. (2013). Laser-based diagnostics applications for plasma-surface interaction studies. Journal of Instrumentation, 8(11), [C11011]. https://doi.org/10.1088/1748-0221/8/11/C11011
van der Meiden, H.J. ; van den Berg, M.A. ; Brons, S. ; Ding, H. ; van Eck, H.J.N. ; 't Hoen, M.H.J. ; Karhunen, Juuso ; de Kruif, T.M. ; Laan, M. ; Lissovski, A. ; Morgan, T.W. ; Paris, P. ; Piip, K. ; van de Pol, M.J. ; Scannell, R. ; Scholten, J. ; Smeets, P.H.M. ; Spork, C. ; Zeijlmans van Emmichoven, P.A. ; Zoomers, R. ; De Temmerman, G. / Laser-based diagnostics applications for plasma-surface interaction studies. In: Journal of Instrumentation. 2013 ; Vol. 8, No. 11.
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title = "Laser-based diagnostics applications for plasma-surface interaction studies",
abstract = "Several laser based diagnostics are implemented on to the linear plasma generator Magnum-PSI, wherein ITER divertor relevant plasma-wall conditions are realized. Laser Induced Desorption Quadrupole Mass Spectroscopy (LID-QMS) and Laser Induced Breakdown Spectroscopy (LIBS) are installed to measure deuterium retention in plasma facing components. Combined with Thermal Desorption Spectroscopy, LID-QMS can be used to measure lateral retention profiles. LIBS is used to measure the surface composition qualitatively, after plasma exposure. An advanced Thomson Scattering (TS) system measures electron density, neutral density and electron temperature profiles (spatial resolution < 2 mm) across the maximum 100 mm plasma diameter. Very low electron density (9 * 10 18 m-3) can be measured within seconds with accuracies better than 6{\%}. The minimum measurable electron density and temperature are ~ 1 * 1017 m-3 and ~ 0.07 eV, respectively. By virtue of the high system sensitivity, single pulse TS can be performed on high density pulsed plasmas (used for replicating ELMs). For measuring the ion temperature and flow velocity of the plasma a Collective TS system (CTS) is being built: the small Debye length of the Magnum-PSI plasma enables application of this method at relatively short laser wavelength. In a feasibility study it was shown that forward CTS with a seeded Nd:YAG laser operating at 1064 nm, can be applied at Magnum-PSI to measure ion temperature and axial velocity with an accuracy of < 8{\%} and < 15{\%}, respectively. Two high spectral resolution ( ~ 0.005 nm) detection schemes are applied simultaneously: an Echelle grating spectrometer (enabling profile measurements) and a system based on a Fabry-Perot etalon that enables wavelength scanning over its free spectral range, by tilting the device. The status and performance of the various laser based plasma and surface diagnostics will be reported along with experimental results.",
keywords = "Plasma diagnostics - charged-particle spectroscopy, Plasma diagnostics - interferometry, spectroscopy and imaging",
author = "{van der Meiden}, H.J. and {van den Berg}, M.A. and S. Brons and H. Ding and {van Eck}, H.J.N. and {'t Hoen}, M.H.J. and Juuso Karhunen and {de Kruif}, T.M. and M. Laan and A. Lissovski and T.W. Morgan and P. Paris and K. Piip and {van de Pol}, M.J. and R. Scannell and J. Scholten and P.H.M. Smeets and C. Spork and {Zeijlmans van Emmichoven}, P.A. and R. Zoomers and {De Temmerman}, G.",
year = "2013",
doi = "10.1088/1748-0221/8/11/C11011",
language = "English",
volume = "8",
journal = "Journal of Instrumentation",
issn = "1748-0221",
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van der Meiden, HJ, van den Berg, MA, Brons, S, Ding, H, van Eck, HJN, 't Hoen, MHJ, Karhunen, J, de Kruif, TM, Laan, M, Lissovski, A, Morgan, TW, Paris, P, Piip, K, van de Pol, MJ, Scannell, R, Scholten, J, Smeets, PHM, Spork, C, Zeijlmans van Emmichoven, PA, Zoomers, R & De Temmerman, G 2013, 'Laser-based diagnostics applications for plasma-surface interaction studies', Journal of Instrumentation, vol. 8, no. 11, C11011. https://doi.org/10.1088/1748-0221/8/11/C11011

Laser-based diagnostics applications for plasma-surface interaction studies. / van der Meiden, H.J.; van den Berg, M.A.; Brons, S.; Ding, H.; van Eck, H.J.N.; 't Hoen, M.H.J.; Karhunen, Juuso; de Kruif, T.M.; Laan, M.; Lissovski, A.; Morgan, T.W.; Paris, P.; Piip, K.; van de Pol, M.J.; Scannell, R.; Scholten, J.; Smeets, P.H.M.; Spork, C.; Zeijlmans van Emmichoven, P.A.; Zoomers, R.; De Temmerman, G.

In: Journal of Instrumentation, Vol. 8, No. 11, C11011, 2013.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Laser-based diagnostics applications for plasma-surface interaction studies

AU - van der Meiden, H.J.

AU - van den Berg, M.A.

AU - Brons, S.

AU - Ding, H.

AU - van Eck, H.J.N.

AU - 't Hoen, M.H.J.

AU - Karhunen, Juuso

AU - de Kruif, T.M.

AU - Laan, M.

AU - Lissovski, A.

AU - Morgan, T.W.

AU - Paris, P.

AU - Piip, K.

AU - van de Pol, M.J.

AU - Scannell, R.

AU - Scholten, J.

AU - Smeets, P.H.M.

AU - Spork, C.

AU - Zeijlmans van Emmichoven, P.A.

AU - Zoomers, R.

AU - De Temmerman, G.

PY - 2013

Y1 - 2013

N2 - Several laser based diagnostics are implemented on to the linear plasma generator Magnum-PSI, wherein ITER divertor relevant plasma-wall conditions are realized. Laser Induced Desorption Quadrupole Mass Spectroscopy (LID-QMS) and Laser Induced Breakdown Spectroscopy (LIBS) are installed to measure deuterium retention in plasma facing components. Combined with Thermal Desorption Spectroscopy, LID-QMS can be used to measure lateral retention profiles. LIBS is used to measure the surface composition qualitatively, after plasma exposure. An advanced Thomson Scattering (TS) system measures electron density, neutral density and electron temperature profiles (spatial resolution < 2 mm) across the maximum 100 mm plasma diameter. Very low electron density (9 * 10 18 m-3) can be measured within seconds with accuracies better than 6%. The minimum measurable electron density and temperature are ~ 1 * 1017 m-3 and ~ 0.07 eV, respectively. By virtue of the high system sensitivity, single pulse TS can be performed on high density pulsed plasmas (used for replicating ELMs). For measuring the ion temperature and flow velocity of the plasma a Collective TS system (CTS) is being built: the small Debye length of the Magnum-PSI plasma enables application of this method at relatively short laser wavelength. In a feasibility study it was shown that forward CTS with a seeded Nd:YAG laser operating at 1064 nm, can be applied at Magnum-PSI to measure ion temperature and axial velocity with an accuracy of < 8% and < 15%, respectively. Two high spectral resolution ( ~ 0.005 nm) detection schemes are applied simultaneously: an Echelle grating spectrometer (enabling profile measurements) and a system based on a Fabry-Perot etalon that enables wavelength scanning over its free spectral range, by tilting the device. The status and performance of the various laser based plasma and surface diagnostics will be reported along with experimental results.

AB - Several laser based diagnostics are implemented on to the linear plasma generator Magnum-PSI, wherein ITER divertor relevant plasma-wall conditions are realized. Laser Induced Desorption Quadrupole Mass Spectroscopy (LID-QMS) and Laser Induced Breakdown Spectroscopy (LIBS) are installed to measure deuterium retention in plasma facing components. Combined with Thermal Desorption Spectroscopy, LID-QMS can be used to measure lateral retention profiles. LIBS is used to measure the surface composition qualitatively, after plasma exposure. An advanced Thomson Scattering (TS) system measures electron density, neutral density and electron temperature profiles (spatial resolution < 2 mm) across the maximum 100 mm plasma diameter. Very low electron density (9 * 10 18 m-3) can be measured within seconds with accuracies better than 6%. The minimum measurable electron density and temperature are ~ 1 * 1017 m-3 and ~ 0.07 eV, respectively. By virtue of the high system sensitivity, single pulse TS can be performed on high density pulsed plasmas (used for replicating ELMs). For measuring the ion temperature and flow velocity of the plasma a Collective TS system (CTS) is being built: the small Debye length of the Magnum-PSI plasma enables application of this method at relatively short laser wavelength. In a feasibility study it was shown that forward CTS with a seeded Nd:YAG laser operating at 1064 nm, can be applied at Magnum-PSI to measure ion temperature and axial velocity with an accuracy of < 8% and < 15%, respectively. Two high spectral resolution ( ~ 0.005 nm) detection schemes are applied simultaneously: an Echelle grating spectrometer (enabling profile measurements) and a system based on a Fabry-Perot etalon that enables wavelength scanning over its free spectral range, by tilting the device. The status and performance of the various laser based plasma and surface diagnostics will be reported along with experimental results.

KW - Plasma diagnostics - charged-particle spectroscopy

KW - Plasma diagnostics - interferometry

KW - spectroscopy and imaging

U2 - 10.1088/1748-0221/8/11/C11011

DO - 10.1088/1748-0221/8/11/C11011

M3 - Article

VL - 8

JO - Journal of Instrumentation

JF - Journal of Instrumentation

SN - 1748-0221

IS - 11

M1 - C11011

ER -

van der Meiden HJ, van den Berg MA, Brons S, Ding H, van Eck HJN, 't Hoen MHJ et al. Laser-based diagnostics applications for plasma-surface interaction studies. Journal of Instrumentation. 2013;8(11). C11011. https://doi.org/10.1088/1748-0221/8/11/C11011