Substrate-dependent deposition efficiency on mirrors exposed in the TCV divertor

被引：9
作者：
De Temmerman, G. [1 ]
Pitts, R. A. [2 ]
机构：
[1] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland
[2] Ecole Polytech Fed Lausanne, Ctr Rech Phys Plasmas, Assoc EURATOM, CH-1015 Lausanne, Switzerland
来源：
FUSION ENGINEERING AND DESIGN | 2008年 / 83卷 / 01期
基金：
欧盟地平线“2020”;
关键词：
first mirrors; deposition; reflectivity; TCV; ITER;
D O I：
10.1016/j.fusengdes.2007.04.044
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Given the planned extensive use of metallic mirrors in the optical diagnostics systems of ITER, the study of reflectivity changes induced by erosion and/or redeposition of impurities on the mirror surfaces is of primary importance for the reliability of the diagnostics signals. This contribution will demonstrate that the mirror material choice can exert a significant influence on the relative importance of erosion/redeposition affecting the mirror reflectivity. A dedicated manipulator has been designed to allow exposure of mirror samples in the divertor region of the Tokamak Configuration Variable (TCV) tokamak. Mirrors from different materials have been exposed both during short experimental campaigns and boronisation procedures. Before and after exposures the mirrors were characterized with different surface analysis techniques (XPS, SIMS, SEM, EDX, ellipsometry). Under identical exposure conditions, the mirror material can strongly influence the deposit thickness found on the sample: the carbon layer thickness on a Si sample is much higher than on a Mo sample. These results have potentially important consequences for the first mirror material choice in ITER. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：30 / 38
页数：9
相关论文
共 32 条
  • [1] Experimental study of different carbon dust growth mechanisms
    Arnas, C
    Dominique, C
    Roubin, P
    Martin, C
    Laffon, C
    Parent, P
    Brosset, C
    Pégourié, B
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2005, 337 (1-3) : 69 - 73
  • [2] BEHRISCH R, 1980, SUPTTERING PARTICLE
  • [3] ITER R&D: Auxiliary systems: Plasma diagnostics
    Costley, AE
    Campbell, DJ
    Kasai, S
    Young, KE
    Zaveriaev, V
    [J]. FUSION ENGINEERING AND DESIGN, 2001, 55 (2-3) : 331 - 346
  • [4] First mirror tests for ITER: Influence of material choice on the erosion/deposition mechanisms affecting optical reflectivity
    De Temmerman, G.
    Pitts, R. A.
    Voitsenya, V. S.
    Marot, L.
    Veres, G.
    Maurer, M.
    Oelhafen, P.
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2007, 363 (1-3) : 259 - 263
  • [5] DETEMMERMAN G, 2006, THESIS U BASEL SWITZ
  • [6] DETEMMERMAN G, 2005, P 32 EPS C PLASM P C, V29, pP1
  • [7] CREATION AND CONTROL OF VARIABLY SHAPED PLASMAS IN TCV
    HOFMANN, F
    LISTER, JB
    ANTON, M
    BARRY, S
    BEHN, R
    BERNEL, S
    BESSON, G
    BUHLMANN, F
    CHAVAN, R
    CORBOZ, M
    DUTCH, MJ
    DUVAL, BP
    FASEL, D
    FAVRE, A
    FRANKE, S
    HEYM, A
    HIRT, A
    HOLLENSTEIN, C
    ISOZ, P
    JOYE, B
    LLOBET, X
    MAGNIN, JC
    MARLETAZ, B
    MARMILLOD, P
    MARTIN, Y
    MAYOR, JM
    MORET, JM
    NIESWAND, C
    PARIS, PJ
    PEREZ, A
    PIETRZYK, ZA
    PITTS, RA
    POCHELON, A
    RAGE, R
    SAUTER, O
    TONETTI, G
    TRAN, MQ
    TROYON, F
    WARD, DJ
    WEISEN, H
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 1994, 36 (12B) : B277 - B287
  • [8] Investigation of carbon transport by 13CH4 injection through graphite and tungsten test limiters in TEXTOR
    Kreter, A.
    Borodin, D.
    Brezinsek, S.
    Droste, S.
    Hirai, T.
    Kirschner, A.
    Litnovsky, A.
    Mayer, M.
    Philipps, V.
    Pospieszczyk, A.
    Sakawa, Y.
    Samm, U.
    Schmitz, O.
    Sergienko, G.
    Tanabe, T.
    Ueda, Y.
    Wienhold, P.
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2006, 48 (09) : 1401 - 1412
  • [9] Analyses of metallic first mirror samples after long term plasma exposure in Tore Supra
    Lipa, M
    Schunke, B
    Gil, C
    Bucalossi, J
    Voitsenya, VS
    Konovalov, V
    Vukolov, K
    Balden, M
    De Temmerman, G
    Oelhafen, P
    Litnovsky, A
    Wienhold, P
    [J]. FUSION ENGINEERING AND DESIGN, 2006, 81 (1-7) : 221 - 225
  • [10] Investigations of single crystal and polycrystalline metal mirrors under erosion conditions in TEXTOR
    Litnovsky, A.
    De Temmerman, G.
    Vukolov, K.
    Wienhold, P.
    Philipps, V.
    Schmitz, O.
    Samm, U.
    Sergienko, G.
    Oelhafen, P.
    Buettner, M.
    Orlovskiy, I.
    Yastrebkov, A.
    Breuer, U.
    Scholl, A.
    [J]. FUSION ENGINEERING AND DESIGN, 2007, 82 (02) : 123 - 132
1234