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Collection of mobile dust in the T2R reversed field pinch

Treść / Zawartość
Identyfikatory
Warianty tytułu
Konferencja
10th International Workshop and Summer School "Towards Fusion Energy", 12-18 June 2011, Kudowa Zdrój, Poland
Języki publikacji
EN
Abstrakty
EN
Intensive plasma-wall interactions in fusion devices result in the impurity production and the formation of films of redeposited material, debris and dust. In present day devices, with short pulses, the mobile dust does not pose any serious operational problems, but it is a matter of serious concern for ITER and for later power producing devices with a high duty cycle. We report results of a dust collection experiment carried out at the T2R reversed field pinch device and related heavy impurity flux measurements. Dust and impurities were collected on passive Si surface probes and on ultralow density silica aerogel collectors. The advantage of the latter method is the possibility of nondestructive capture of the micron- and submicron-sized dust particles. The toroidal and radial deposition fluxes of dust particles and impurities are estimated and discussed in the light of the dominant forces acting on the dust.
Słowa kluczowe
EN
Czasopismo
Rocznik
Strony
55--60
Opis fizyczny
Bibliogr. 29 poz., rys.
Twórcy
autor
autor
autor
autor
  • Division of Fusion Plasma Physics (Association EURATOM-VR), KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden, Tel.: +46 8 790 9122, Fax: +46 8 24 5431, igor.bykov@ee.kth.se
Bibliografia
  • 1. Bergsåker H, Menmuir S, Rachlew E, Brunsell PR, Frassinetti L, Drake JR (2008) Metal impurity fluxes and plasma-surface interactions in EXTRAP T2R. J Phys Conf Ser 100:062030
  • 2. Bergsåker H, Ratynskaia S, Litnovsky A, Ogata D, Sahle W (2011) Studies of mobile dust in scrape-off layer plasmas using silica aerogel collectors. J Nucl Mater 415;S1:S1089–S1093
  • 3. Brownlee DE, Horz F, Newburn RL et al. (2004) Surface of young jupiter family comet 81P/Wild 2: View form the stardust spacecraft. Science 304:1764–1769
  • 4. Brunsell PR, Bergsåker H, Cecconello M et al. (2001) Initial result from the rebuilt EXTRAP T2R RFP device. Plasma Phys Control Fusion 43:1457 (doi:10.1088/0741-3335/43/11/303
  • 5. Brunsell PR, Kuldkepp M, Menmuir S et al. (2006) Reversed field pinch operation with intelligent shell feedback control in EXTRAP T2R. Nucl Fusion 46:904–913
  • 6. De Temmerman G, Bacharis M, Dowling J, Lisgo S (2010) Dust creation and transport in MAST. Nucl Fusion 50:105012
  • 7. Domínguez G, Westphal AJ, Jones SM, Phillips MLF (2004) Energy loss and impact cratering in aerogels: theory and experiment. Icarus 172:613–624
  • 8. Federici G, Andrew P, Barabaschi P et al. (2003) Key ITER plasma edge and plasma-material interaction issues. J Nucl Mater 313–316:11–22
  • 9. Federici G, Skinner CH, Brooks JN et al. (2001) Plasma-material interactions in current tokamaks and their implications for next step fusion reactors. Nucl Fusion 41:1967 (doi: 10.1088/0029-5515/41/12/218)
  • 10. Frassinetti L, Olofsson KEJ, Brunsell PR, Drake JR (2011) Implementation of advanced feedback control algorithms for controlled resonant magnetic perturbation physics studies on EXTRAP T2R. Nucl Fusion 51:063018
  • 11. Girard J-Ph, Garin P, Taylor N, Uzan-Elbez J, Rodriguez-Rodrigo L, Gulden W (2007) ITER, safety and licensing. Fusion Eng Des 82:506–510
  • 12. Krasheninnikov SI, Pigarov AYu, Smirnov RD et al. (2008) Recent progress in understanding the behavior of dust in fusion devices. Plasma Phys Control Fusion 50;12:124054
  • 13. Krasheninnikov SI, Pigarov AYu, Smirnov RD, Soboleva TK (2010) Theoretical aspects of dust in fusion devices. Contrib Plasma Phys 50;3/4:410–425
  • 14. Morfill G, Räth C, Li Y-F et al. (2009) Dust capture experiment in HT-7. New J Phys 11:113041
  • 15. Ohkawa T (1977) Dust particles as a possible source of impurities in tokamaks. Kaku Yugo Kenkyu 37:117–131
  • 16. Proverbio I, Lazzaro E, Ratynskaia S et al. (2011) The dynamics of ferromagnetic dust particles in the FTU tokamak. Plasma Phys Control Fusion 53:115013
  • 17. Ratynskaia S, Bergsåker H, Emmoth B, Litnovsky A, Kreter A, Phillips V (2009) Capture by aerogel – characterization of mobile dust in tokamak scrape-off layer plasmas. Nucl Fusion 49:122001
  • 18. Ratynskaia S, Castaldo C, Bergsåker H, Rudakov D (2011) Diagnostics of mobile dust in scrape-off layer plasmas. Plasma Phys Control Fusion 53:074009
  • 19. Ratynskaia S, Castaldo C, Giovannozzi E et al. (2008) In situ dust detection in fusion devices. Plasma Phys Control Fusion 50;12:124046
  • 20. Rubel M, Cecconello M, Malmberg JA et al. (2001) Dust particles in controlled fusion devices: morphology, obsevations in the plasma and influence on the plasma perfirmance. Nucl Fusion 41:1087–1099
  • 21. Sharpe JP, Petti DA, Bartels HW (2002) A review of dust in fusion devices: Implications for safety and operational performance. Fusion Eng Des 63/64:153–163
  • 22. Shimomura Y (2007) ITER and plasma surface interaction issues in a fusion reactor. J Nucl Mater 363/365:467–475
  • 23. Smirnov RD, Krasheninnikov SI, Pigarov AYu, Benson 1. Bergsåker H, Menmuir S, Rachlew E, Brunsell PR, Frassinetti L, Drake JR (2008) Metal impurity fluxes and plasma-surface interactions in EXTRAP T2R. J Phys Conf Ser 100:062030
  • 24. Smirnov RD, Krasheninnikov SI, Pigarov Ayu, Roquemore AL, Mansfield DK, Nichols J (2011) Modeling of dust impact on tokamak edge plasmas. J Nucl Mater 415;S1:S1067–S1072
  • 25. Smirnov RD, Pigarov AYy, Rosenberg M, Krasheninnikov SI, Mendis DA (2007) Modelling of dynamics and transport of carbon dust particles in tokamaks. Plasma Phys Control Fusion 49:347–371
  • 26. Tsou P (1995) Silica aerogel captures cosmic dust intact. J Non-Cryst Solids 186:415–427
  • 27. Vianello N, Spolaore M, Serianni G, Bergsåker H, Antoni V, Drake JR (2002) Properties of the edge plasma in the rebuilt Extrap-T2R reversed field pinch experiment. Plasma Phys Control Fusion 44:2513–2523
  • 28. Welander A, Bergsåker H (1998) Measurements of hot electrons in the Extrap T1 reversed-field pinch. Plasma Phys Control Fusion 40:319 (doi:10.1088/0741-3335/40/2/011)
  • 29.Wolff H (1991) Arcing in magnetic fusion devices. Nucl Fusion Suppl 1:97–107
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ8-0017-0008
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