Application of the penning discharge for cleaning mirrors in optical diagnostics of the ITER

被引：16

作者：

Rogov, A. V. ^{[1
]}

Kapustin, Yu V. ^{[1
]}

Alekseev, A. G. ^{[1
]}

机构：

[1] Kurchatov Inst, Natl Res Ctr, Moscow 123182, Russia

来源：

INSTRUMENTS AND EXPERIMENTAL TECHNIQUES | 2015年 / 58卷 / 01期

关键词：

Cathodes - Aluminum coatings - Cleaning - Magnetic fields - Optical properties;

D O I：

10.1134/S0020441214060104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The possibility of using the reflective gas discharge at a direct current (DC) in a strong uniform magnetic field for cleaning mirrors in optical diagnostics of the ITER is studied. A mirror and an additional Penning-type electrode, which was shifted along the magnetic field, were used as sputtered cathodes forming the discharge cell. The experiments were performed in gaseous He, in a magnetic field of up to 0.5 T at a discharge voltage of up to 750 V. Mo, Al and Mo mirrors with an Al coating, simulating a Be impurity, were used as materials of the cathodes. It is shown that this system efficiently cleans Mo mirrors from Al films with a thickness of up to 200 nm, recovering the initial optical properties of the mirror. Integration versions of cleaning systems of this type into the first-mirror assembly for the ITER are proposed for the example of H alpha diagnostics.

引用

页码：161 / 166

页数：6

共 11 条

[1] Particle deposition and optical response of ITER motional Stark euect diagnostic first mirrors [J].

Brooks, J. N. ;

Allain, J. P. .

NUCLEAR FUSION, 2008, 48 (04)

[2] Beryllium deposition on International Thermonuclear Experimental Reactor first mirrors: Layer morphology and influence on mirror reflectivity [J].

De Temmerman, G. ;

Baldwin, M. J. ;

Doerner, R. P. ;

Nishijima, D. ;

Seraydarian, R. ;

Schmid, K. ;

Kost, F. ;

Linsmeier, Ch. ;

Marot, L. .

JOURNAL OF APPLIED PHYSICS, 2007, 102 (08)

[3]

Ivanova D., 2013, P 14 INT C PLASM FAC, P118

[4] Numerical modelling of steady-state fluxes at the ITER first wall [J].

Kotov, V. ;

Litnovsky, A. ;

Kukushkin, A. S. ;

Reiter, D. ;

Kirschner, A. .

JOURNAL OF NUCLEAR MATERIALS, 2009, 390-91 :528-531

[5] Diagnostic mirrors for ITER:: A material choice and the impact of erosion and deposition on their performance [J].

Litnovsky, A. ;

Wienhold, P. ;

Philipps, V. ;

Sergienko, G. ;

Schmitz, O. ;

Kirschner, A. ;

Kreter, A. ;

Droste, S. ;

Samm, U. ;

Mertens, Ph. ;

Donne, A. H. ;

Rudakov, D. ;

Allen, S. ;

Bolvin, R. ;

McLean, A. ;

Stangeby, P. ;

West, W. ;

Wong, C. ;

Lipa, M. ;

Schunke, B. ;

De Temmerman, G. ;

Pitts, R. ;

Costley, A. ;

Voitsenya, V. ;

Vukolov, K. ;

Oelhafen, P. ;

Rubel, M. ;

Romanyuk, A. .

JOURNAL OF NUCLEAR MATERIALS, 2007, 363 :1395-1402

[6] Progress in research and development of mirrors for ITER diagnostics [J].

Litnovsky, A. ;

Voitsenya, V. ;

Sugie, T. ;

De Temmerman, G. ;

Costley, A. E. ;

Donne, A. J. H. ;

Vukolov, K. Yu. ;

Orlovskiy, I. ;

Brooks, J. N. ;

Allain, J. P. ;

Kotov, V. ;

Semerok, A. ;

Thro, P. -Y. ;

Akiyama, T. ;

Yoshida, N. ;

Tokunaga, T. ;

Kawahata, K. .

NUCLEAR FUSION, 2009, 49 (07)

[7]

Moser L., 2013, MIRR CLEAN WORKSH

[8] First mirrors in ITER: material choice and deposition prevention/cleaning techniques [J].

Mukhin, E. E. ;

Semenov, V. V. ;

Razdobarin, A. G. ;

Tolstyakov, S. Yu. ;

Kochergin, M. M. ;

Kurskiev, G. S. ;

Podushnikova, K. A. ;

Masyukevich, S. V. ;

Kirilenko, D. A. ;

Sitnikova, A. A. ;

Chernakov, P. V. ;

Gorodetsky, A. E. ;

Bukhovets, V. L. ;

Zalavutdinov, R. Kh. ;

Zakharov, A. P. ;

Arkhipov, I. I. ;

Khimich, Yu. P. ;

Nikitin, D. B. ;

Gorshkov, V. N. ;

Smirnov, A. S. ;

Chernoizumskaja, T. V. ;

Khilkevitch, E. M. ;

Bulovich, S. V. ;

Voitsenya, V. S. ;

Bondarenko, V. N. ;

Konovalov, V. G. ;

Ryzhkov, I. V. ;

Nekhaieva, O. M. ;

Skorik, O. A. ;

Vukolov, K. Yu. ;

Khripunov, V. I. ;

Andrew, P. .

NUCLEAR FUSION, 2012, 52 (01)

[9]

Rogov A.V., 2013, P ALL RUSS C DIAGN H, P127

[10]

Vasil'ev G.A, 1970, MAGNITORAZRYADNYE NA

← 1 2 →