TY - JOUR
T1 - Plasma–wall interaction studies within the EUROfusion consortium: progress on plasma-facing components development and qualification
JF - Nuclear Fusion
Y1 - 2017
A1 - Brezinsek, S.
A1 - Coenen, J. W.
A1 - Schwartz-Selinger, T.
A1 - Schmid, K.
A1 - Kirschner, A.
A1 - Hakola, A.
A1 - Tabares, F. L.
A1 - van der Meiden, H. J.
A1 - Mayoral, M.
A1 - Reinhart, M.
A1 - Tsitrone, E.
A1 - Vernimmen, J. W. M.
A1 - Morgan, T. W.
A1 - Ahlgren, T.
A1 - Aints, M.
A1 - Airila, M.
A1 - Almaviva, S.
A1 - Alves, E.
A1 - Angot, T.
A1 - Anita, V.
A1 - R. Arredondo Parra
A1 - Aumayr, F.
A1 - Balden, M.
A1 - Bauer, J.
A1 - Ben Yaala, M.
A1 - Berger, B. M.
A1 - Bisson, R.
A1 - Björkas, C.
A1 - Bogdanovic Radovic, I.
A1 - Borodin, D.
A1 - Bucalossi, J.
A1 - Butikova, J.
A1 - Butoi, B.
A1 - Cadez, I.
A1 - Caniello, R.
A1 - Caneve, L.
A1 - Cartry, G.
A1 - Catarino, N.
A1 - Čekada, M.
A1 - Ciraolo, G.
A1 - Ciupinski, L.
A1 - Colao, F.
A1 - Corre, Y.
A1 - Costin, C.
A1 - Craciunescu, T.
A1 - Cremona, A.
A1 - de Angeli, M.
A1 - de Castro, A.
A1 - Dejarnac, R.
A1 - Dellasega, D.
A1 - Dinca, P.
A1 - Dittmar, T.
A1 - Dobrea, C.
A1 - Hansen, P.
A1 - Drenik, A.
A1 - Eich, T.
A1 - Elgeti, S.
A1 - Falie, D.
A1 - Fedorczak, N.
A1 - Ferro, Y.
A1 - Fornal, T.
A1 - Fortuna, E.
A1 - Gao, L.
A1 - Gasior, P.
A1 - Gherendi, M.
A1 - Ghezzi, F.
A1 - Gosar, Z.
A1 - Greuner, H.
A1 - Grigore, E.
A1 - Grisolia, C.
A1 - Groth, M.
A1 - Gruca, M.
A1 - Grzonka, J.
A1 - Gunn, J. P.
A1 - Hassouni, K.
A1 - Heinola, K.
A1 - Höschen, T.
A1 - Huber, S.
A1 - Jacob, W.
A1 - Jepu, I.
A1 - Jiang, X.
A1 - Jogi, I.
A1 - Kaiser, A.
A1 - Karhunen, J.
A1 - Kelemen, M.
A1 - Köppen, M.
A1 - Koslowski, H. R.
A1 - Kreter, A.
A1 - Kubkowska, M.
A1 - Laan, M.
A1 - Laguardia, L.
A1 - Lahtinen, A.
A1 - Lasa, A.
A1 - Lazic, V.
A1 - Lemahieu, N.
A1 - Likonen, J.
A1 - Linke, J.
A1 - Litnovsky, A.
A1 - Linsmeier, C.
A1 - Loewenhoff, T.
A1 - Lungu, C.
A1 - Lungu, M.
A1 - Maddaluno, G.
A1 - Maier, H.
A1 - Makkonen, T.
A1 - Manhard, A.
A1 - Marandet, Y.
A1 - Markelj, S.
A1 - Marot, L.
A1 - Martin, C.
A1 - Martin-Rojo, A. B.
A1 - Martynova, Y.
A1 - Mateus, R.
A1 - Matveev, D.
A1 - Mayer, M.
A1 - Meisl, G.
A1 - Mellet, N.
A1 - Michau, A.
A1 - Miettunen, J.
A1 - Möller, S.
A1 - Mougenot, J.
A1 - Mozetic, M.
A1 - Nemanič, V.
A1 - Neu, R.
A1 - Nordlund, K.
A1 - Oberkofler, M.
A1 - Oyarzabal, E.
A1 - Panjan, M.
A1 - Pardanaud, C.
A1 - Paris, P.
A1 - Passoni, M.
A1 - Pegourie, B.
A1 - Pelicon, P.
A1 - Petersson, P.
A1 - Piip, K.
A1 - Pintsuk, G.
A1 - Pompilian, G. O.
A1 - Popa, G.
A1 - Porosnicu, C.
A1 - Primc, G.
A1 - Probst, M.
A1 - Räisänen, J.
A1 - Rasinski, M.
A1 - Ratynskaia, S.
A1 - Reiser, D.
A1 - Ricci, D.
A1 - Richou, M.
A1 - Riesch, J.
A1 - Riva, G.
A1 - Rosinski, M.
A1 - Roubin, P.
A1 - Rubel, M.
A1 - Ruset, C.
A1 - Safi, E.
A1 - Sergienko, G.
A1 - Siketic, Z.
A1 - Sima, A.
A1 - Spilker, B.
A1 - Stadlmayr, R.
A1 - Steudel, I.
A1 - Ström, P.
A1 - Tadic, T.
A1 - Tafalla, D.
A1 - Tale, I.
A1 - Terentyev, D.
A1 - Terra, A.
A1 - Tiron, V.
A1 - Tiseanu, I.
A1 - Tolias, P.
A1 - Tskhakaya, D.
A1 - Uccello, A.
A1 - Unterberg, B.
A1 - Uytdenhoven, I.
A1 - Vassallo, E.
A1 - Vavpetic, P.
A1 - Veis, P.
A1 - Velicu, I. L.
A1 - Voitkans, A.
A1 - von Toussaint, U.
A1 - Weckmann, A.
A1 - Wirtz, M.
A1 - Zaloznik, A.
A1 - Zaplotnik, R.
A1 - WP PFC contributors
AB - The provision of a particle and power exhaust solution which is compatible with first-wall components and edge-plasma conditions is a key area of present-day fusion research and mandatory for a successful operation of ITER and DEMO. The work package plasma-facing components (WP PFC) within the European fusion programme complements with laboratory experiments, i.e. in linear plasma devices, electron and ion beam loading facilities, the studies performed in toroidally confined magnetic devices, such as JET, ASDEX Upgrade, WEST etc. The connection of both groups is done via common physics and engineering studies, including the qualification and specification of plasma-facing components, and by modelling codes that simulate edge-plasma conditions and the plasma–material interaction as well as the study of fundamental processes. WP PFC addresses these critical points in order to ensure reliable and efficient use of conventional, solid PFCs in ITER (Be and W) and DEMO (W and steel) with respect to heat-load capabilities (transient and steady-state heat and particle loads), lifetime estimates (erosion, material mixing and surface morphology), and safety aspects (fuel retention, fuel removal, material migration and dust formation) particularly for quasi-steady-state conditions. Alternative scenarios and concepts (liquid Sn or Li as PFCs) for DEMO are developed and tested in the event that the conventional solution turns out to not be functional. Here, we present an overview of the activities with an emphasis on a few key results: (i) the observed synergistic effects in particle and heat loading of ITER-grade W with the available set of exposition devices on material properties such as roughness, ductility and microstructure; (ii) the progress in understanding of fuel retention, diffusion and outgassing in different W-based materials, including the impact of damage and impurities like N; and (iii), the preferential sputtering of Fe in EUROFER steel providing an in situ W surface and a potential first-wall solution for DEMO.
VL - 57
IS - 11
U1 - PSI
U2 - PMI
U5 - 4f90e0cf51291a6cb8b6e575c66f5043
ER -
TY - JOUR
T1 - Secondary electron emission of tin and tin-lithium under low energy helium plasma exposure
JF - Nuclear Materials and Energy
Y1 - 2017
A1 - Kvon, V.
A1 - Oyarzabal, E.
A1 - Zoethout, E.
A1 - Martin-Rojo, A. B.
A1 - Morgan, T. W.
A1 - Tabares, F. L.
AB - Secondary electron emission (SEE) yields of tin (Sn) and tin-lithium (SnLi) eutectic (20 at.% Li) samples were measured in He-plasma at a mean incoming electron energy up to 120 eV. SnLi shows a maximum yield of about 1.45 at 110 eV electron energy while the yield of the Sn surface was measured to be maximally 1.05 at 120 eV. X-ray photoelectron spectroscopy (XPS) analysis demonstrated the segregation effect of Li to the surface of the eutectic, both after melting in the argon atmosphere and in molten state with simultaneous He-plasma exposure. At least the top 10 nm of the SnLi samples were heavily enriched with Li, and Sn/Li ratios varied in the range 0.8–5% depending on eutectic treatment conditions. After the plasma exposure Sn3d is detected predominantly in the oxidized state while after extended atmospheric oxidation there was still a significant amount of Sn3d detected in the metallic state. The liquid surface of SnLi indicated a possible decrease of SEE yield. All measurements gave values of SEE yield close to or above unity. Such values can lead to significant plasma sheath disturbances and subsequent additional heat flux from electrons on such a plasma-facing material, thus, should be accounted for in designing fusion reactors using these components.
VL - 13
U1 - PSI
U2 - PMI
U5 - 0bb8c065eeb0b9491b62d48ebe8cca9f
ER -
TY - JOUR
T1 - Characterisation of Tungsten Nitride Layers and their Erosion under Plasma Exposure in NANO-PSI
JF - Romanian Reports in Physics
Y1 - 2015
A1 - Alegre, D.
A1 - Acsente, T.
A1 - Martin-Rojo, A. B.
A1 - Oyarzabal, E.
A1 - Tabares, F. L.
A1 - Dinescu, G.
A1 - De Temmerman, G.
A1 - Birjega, R.
A1 - Logofatu, C.
A1 - Kovac, J.
A1 - Mozetic, M.
AB - The properties of tungsten nitride thin films deposited by both reactive RF-magnetron sputtering from tungsten targets in Argon/N-2, and RF generated nitrogen ions bombardment of previously sequentially deposited tungsten layers have been investigated. Films exhibited smaller erosion than pure tungsten in Argon plasmas at NANO-PSI expanding thermal plasma device.
VL - 67
SN - 1221-1451
UR - http://www.rrp.infim.ro/2015_67_2/A23.pdf
IS - 2
U1 - PSI
U2 - PSI-E
U5 - ac586477904f72ea394490e6f8fbf624
ER -
TY - JOUR
T1 - Mixing of multiple hydrogen plasma beams in a strong magnetic field by E x B drift-induced rotation
JF - Plasma Physics and Controlled Fusion
Y1 - 2011
A1 - Oyarzabal, E.
A1 - Vijvers, W. A. J.
A1 - Al, R.S.
A1 - van der Meiden, H. J.
A1 - van der Pol, M.J.
A1 - Tabares, F. L.
A1 - G. J. van Rooij
KW - ITER
AB - Mixing of up to three similar to 1 cm diameter plasma beams of pure hydrogen as well as mixtures of hydrogen and argon in magnetic fields of <1.6 T are studied. An external ring electrode is used to create a radial electric field that induces E x B rotation of the individual beams around a common axis. Rotation profiles with maximum speeds up to 10 km s(-1) are measured from the hydrogen atomic line shapes and confirm rotation around the ring axis. Mixing to a total beam diameter of similar to 2.5-3 cm is observed in density profiles measured with Thomson scattering near a target at 0.5 m downstream. Currents of up to 60 A were received by the ring, involving an addition power input of up to 5.4 kW to the plasma.

VL - 53
SN - 0741-3335
IS - 10
N1 - ISI Document Delivery No.: 823VVTimes Cited: 0Cited Reference Count: 15
U1 - PSI

U2 - PSI-E

U5 - cb050002678c439af83f839b8cb0025b
ER -