Status of the R&D activities to the design of an ITER core CXRS diagnostic system

Philippe Mertens, David A. Castano Bardawil, T. (Teteny) Baross, W. (Wolfgang) Biel, S. (Sebastian) Friese, N. (Nick) Hawkes, Roger Jaspers, V. (Vladislav) Kotov, Y. (Yury) Krasikov, Andreas Krimmer, Andrey Litnovsky, Oleksander Marchuk, Olaf Neubauer, Guido Offermanns, Anatoly Panin, Gergoe Pokol, Michael Schrader, Ulrich Samm

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Abstract

The CXRS (Charge-eXchange Recombination Spectroscopy) diagnostic for the core plasma of ITER will be designed to provide observation of the dedicated diagnostic beam (DNB) over a wide radial range, roughly from a normalised radius r/a = 0.7 to close to the plasma axis. The collected light will be transported through the Upper Port Plug #3 (UPP3) to a bundle of fibres and ultimately to a set of remote spectrometers. The design is particularly challenging in view of the ITER environment of particle, heat and neutron fluxes, temperature cycles, electromagnetic loads, vibrations, expected material degradation and fatigue, constraints against tritium penetration, integration in the plug and limited opportunities for maintenance. Moreover, a high performance (étendue × transmission, dynamic range) is expected for the port plug system since the beam attenuation is large and the background light omnipresent, especially in terms of bremsstrahlung, line radiation and reflections. The present contribution will give an overview of the current status and activities which deal with the core CXRS system, summarising the investigations which have taken place before entering the actual development and design phase.
Original languageEnglish
Pages (from-to)129-135
JournalFusion Engineering and Design
Volume96-97
DOIs
Publication statusPublished - Oct 2015
Event28th Symposium On Fusion Technology (SOFT 2014) - San Sebastian, Spain
Duration: 29 Sep 20143 Oct 2014
Conference number: 28
http://www.barcelocongresos.com.es/archivo/2014SOFT/welcome.html

Keywords

  • ITER
  • Diagnostic
  • Active spectroscopy
  • Upper port plug
  • CXRS
  • Charge-exchange

Cite this

Mertens, P., Bardawil, D. A. C., Baross, T. T., Biel, W. W., Friese, S. S., Hawkes, N. N., ... Samm, U. (2015). Status of the R&D activities to the design of an ITER core CXRS diagnostic system. Fusion Engineering and Design, 96-97, 129-135. https://doi.org/10.1016/j.fusengdes.2015.05.039
Mertens, Philippe ; Bardawil, David A. Castano ; Baross, T. (Teteny) ; Biel, W. (Wolfgang) ; Friese, S. (Sebastian) ; Hawkes, N. (Nick) ; Jaspers, Roger ; Kotov, V. (Vladislav) ; Krasikov, Y. (Yury) ; Krimmer, Andreas ; Litnovsky, Andrey ; Marchuk, Oleksander ; Neubauer, Olaf ; Offermanns, Guido ; Panin, Anatoly ; Pokol, Gergoe ; Schrader, Michael ; Samm, Ulrich. / Status of the R&D activities to the design of an ITER core CXRS diagnostic system. In: Fusion Engineering and Design. 2015 ; Vol. 96-97. pp. 129-135.
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title = "Status of the R&D activities to the design of an ITER core CXRS diagnostic system",
abstract = "The CXRS (Charge-eXchange Recombination Spectroscopy) diagnostic for the core plasma of ITER will be designed to provide observation of the dedicated diagnostic beam (DNB) over a wide radial range, roughly from a normalised radius r/a = 0.7 to close to the plasma axis. The collected light will be transported through the Upper Port Plug #3 (UPP3) to a bundle of fibres and ultimately to a set of remote spectrometers. The design is particularly challenging in view of the ITER environment of particle, heat and neutron fluxes, temperature cycles, electromagnetic loads, vibrations, expected material degradation and fatigue, constraints against tritium penetration, integration in the plug and limited opportunities for maintenance. Moreover, a high performance ({\'e}tendue × transmission, dynamic range) is expected for the port plug system since the beam attenuation is large and the background light omnipresent, especially in terms of bremsstrahlung, line radiation and reflections. The present contribution will give an overview of the current status and activities which deal with the core CXRS system, summarising the investigations which have taken place before entering the actual development and design phase.",
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author = "Philippe Mertens and Bardawil, {David A. Castano} and Baross, {T. (Teteny)} and Biel, {W. (Wolfgang)} and Friese, {S. (Sebastian)} and Hawkes, {N. (Nick)} and Roger Jaspers and Kotov, {V. (Vladislav)} and Krasikov, {Y. (Yury)} and Andreas Krimmer and Andrey Litnovsky and Oleksander Marchuk and Olaf Neubauer and Guido Offermanns and Anatoly Panin and Gergoe Pokol and Michael Schrader and Ulrich Samm",
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Mertens, P, Bardawil, DAC, Baross, TT, Biel, WW, Friese, SS, Hawkes, NN, Jaspers, R, Kotov, VV, Krasikov, YY, Krimmer, A, Litnovsky, A, Marchuk, O, Neubauer, O, Offermanns, G, Panin, A, Pokol, G, Schrader, M & Samm, U 2015, 'Status of the R&D activities to the design of an ITER core CXRS diagnostic system', Fusion Engineering and Design, vol. 96-97, pp. 129-135. https://doi.org/10.1016/j.fusengdes.2015.05.039

Status of the R&D activities to the design of an ITER core CXRS diagnostic system. / Mertens, Philippe; Bardawil, David A. Castano; Baross, T. (Teteny); Biel, W. (Wolfgang); Friese, S. (Sebastian); Hawkes, N. (Nick); Jaspers, Roger; Kotov, V. (Vladislav); Krasikov, Y. (Yury); Krimmer, Andreas; Litnovsky, Andrey; Marchuk, Oleksander; Neubauer, Olaf; Offermanns, Guido; Panin, Anatoly; Pokol, Gergoe; Schrader, Michael; Samm, Ulrich.

In: Fusion Engineering and Design, Vol. 96-97, 10.2015, p. 129-135.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Status of the R&D activities to the design of an ITER core CXRS diagnostic system

AU - Mertens, Philippe

AU - Bardawil, David A. Castano

AU - Baross, T. (Teteny)

AU - Biel, W. (Wolfgang)

AU - Friese, S. (Sebastian)

AU - Hawkes, N. (Nick)

AU - Jaspers, Roger

AU - Kotov, V. (Vladislav)

AU - Krasikov, Y. (Yury)

AU - Krimmer, Andreas

AU - Litnovsky, Andrey

AU - Marchuk, Oleksander

AU - Neubauer, Olaf

AU - Offermanns, Guido

AU - Panin, Anatoly

AU - Pokol, Gergoe

AU - Schrader, Michael

AU - Samm, Ulrich

PY - 2015/10

Y1 - 2015/10

N2 - The CXRS (Charge-eXchange Recombination Spectroscopy) diagnostic for the core plasma of ITER will be designed to provide observation of the dedicated diagnostic beam (DNB) over a wide radial range, roughly from a normalised radius r/a = 0.7 to close to the plasma axis. The collected light will be transported through the Upper Port Plug #3 (UPP3) to a bundle of fibres and ultimately to a set of remote spectrometers. The design is particularly challenging in view of the ITER environment of particle, heat and neutron fluxes, temperature cycles, electromagnetic loads, vibrations, expected material degradation and fatigue, constraints against tritium penetration, integration in the plug and limited opportunities for maintenance. Moreover, a high performance (étendue × transmission, dynamic range) is expected for the port plug system since the beam attenuation is large and the background light omnipresent, especially in terms of bremsstrahlung, line radiation and reflections. The present contribution will give an overview of the current status and activities which deal with the core CXRS system, summarising the investigations which have taken place before entering the actual development and design phase.

AB - The CXRS (Charge-eXchange Recombination Spectroscopy) diagnostic for the core plasma of ITER will be designed to provide observation of the dedicated diagnostic beam (DNB) over a wide radial range, roughly from a normalised radius r/a = 0.7 to close to the plasma axis. The collected light will be transported through the Upper Port Plug #3 (UPP3) to a bundle of fibres and ultimately to a set of remote spectrometers. The design is particularly challenging in view of the ITER environment of particle, heat and neutron fluxes, temperature cycles, electromagnetic loads, vibrations, expected material degradation and fatigue, constraints against tritium penetration, integration in the plug and limited opportunities for maintenance. Moreover, a high performance (étendue × transmission, dynamic range) is expected for the port plug system since the beam attenuation is large and the background light omnipresent, especially in terms of bremsstrahlung, line radiation and reflections. The present contribution will give an overview of the current status and activities which deal with the core CXRS system, summarising the investigations which have taken place before entering the actual development and design phase.

KW - ITER

KW - Diagnostic

KW - Active spectroscopy

KW - Upper port plug

KW - CXRS

KW - Charge-exchange

U2 - 10.1016/j.fusengdes.2015.05.039

DO - 10.1016/j.fusengdes.2015.05.039

M3 - Article

VL - 96-97

SP - 129

EP - 135

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

SN - 0920-3796

ER -