TY  - JOUR
AU  - Krasikov, Yury
AU  - Panin, Anatoly
AU  - Litnovsky, Andrey
AU  - Mertens, Philippe
AU  - Schrader, Michael
TI  - Specific design and structural issues of single crystalline first mirrors for diagnostics
JO  - Fusion engineering and design
VL  - 124
SN  - 0920-3796
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2017-06357
SP  - 548-552
PY  - 2017
AB  - The first mirrors of ITER diagnostic systems are the most vulnerable ones since they are directed to the plasma and are subjected to erosion and intensive impurity deposition. To keep their optical performance and maintainability, single crystalline molybdenum and rhodium have been considered as mirror materials, subject to intensive investigations including R&Ds and mirror cleaning studies.The paper presents specific design and structural issues of the first mirror of 300 mm in the size considered for the ITER core charge exchange recombination spectroscopy (cCXRS). Such a large mirror can be assumed as a generic one for solid middle (size) mirrors (up to 100 mm in diameter) and for composed large mirrors (diameter >150 mm) that are potentially made of an assembly of smaller pieces.The main design aspects like the first mirror material, the cooling capability of passively and actively cooled mirrors and the mechanical behavior of rhodium and molybdenum mirrors composed of single crystals pieces (i.e. plates and tiles) have been addressed and studied. The mirror design is supported by extensive structural and multi-field analysis.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000419411900115
DO  - DOI:10.1016/j.fusengdes.2017.04.038
UR  - https://juser.fz-juelich.de/record/837443
ER  -