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@ARTICLE{Nietiadi:1005359,
author = {Nietiadi, Y. and Luís, R. and Silva, A. and Belo, J. H.
and Vale, A. and Malaquias, A. and Gonçalves, B. and da
Silva, F. and Santos, J. and Ricardo, E. and Biel, W.},
title = {{T}hermomechanical analysis of a multi-reflectometer system
for {DEMO}},
journal = {Fusion engineering and design},
volume = {190},
issn = {0920-3796},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2023-01462},
pages = {113530 -},
year = {2023},
abstract = {Microwave reflectometry systems are currently considered as
a possible solution for plasma position and control, in
DEMO. The primary integration approach for this diagnostic
involves the incorporation of several groups of antennas and
waveguides into a diagnostics slim cassette (DSC), a full
20–25 cm thick poloidal sector dedicated to diagnostics.
Since the passive front-end components of the reflectometry
system (antennas and WGs) will be directly exposed to the
plasma, an effective cooling system is required to keep the
operating temperatures below the limits established for the
DSC materials under neutron irradiation. Furthermore, the
mechanical stresses experienced by the DSC should not
jeopardize its structural integrity. In this work, the
temperature distributions of a DSC segment with an updated
cooling system design were estimated with a coupled
steady-state thermal analysis performed with ANSYS
Mechanical and ANSYS CFX, using the system-coupling module
of ANSYS Workbench. It was found that the maximum
temperature obtained in the DSC could be below the limits if
the antennas are made of tungsten. These results were used
as input in structural analysis, which has shown that the
structure of the designed DSC fulfils the level-A
requirements of RCC-MR for Immediate Plastic Collapse (IPC),
Immediate Plastic Instability (IPI), and Immediate Plastic
Flow Localization (IPFL).},
cin = {IEK-4},
ddc = {530},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
pid = {G:(DE-HGF)POF4-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000954399400001},
doi = {10.1016/j.fusengdes.2023.113530},
url = {https://juser.fz-juelich.de/record/1005359},
}