TY  - JOUR
AU  - Nietiadi, Y.
AU  - Luís, R.
AU  - Silva, A.
AU  - Belo, J. H.
AU  - Vale, A.
AU  - Malaquias, A.
AU  - Gonçalves, B.
AU  - da Silva, F.
AU  - Santos, J.
AU  - Ricardo, E.
AU  - Biel, W.
TI  - Thermomechanical analysis of a multi-reflectometer system for DEMO
JO  - Fusion engineering and design
VL  - 190
SN  - 0920-3796
CY  - New York, NY [u.a.]
PB  - Elsevier
M1  - FZJ-2023-01462
SP  - 113530 -
PY  - 2023
AB  - 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).
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000954399400001
DO  - DOI:10.1016/j.fusengdes.2023.113530
UR  - https://juser.fz-juelich.de/record/1005359
ER  -