TY - JOUR
T1 - Thermal analyses of the in-vessel frontends of the ITER plasma position reflectometry system
AU - Nietiadi, Yohanes
AU - Vidal, Catarina
AU - Luís, Raul
AU - Varela, Paulo
N1 - Funding Information:
The work leading to this publication has been partially funded by Fusion for Energy (F4E) under the Specific Grant Agreement F4E-FPA-375-04 . IST activities also received financial support from Fundação para a Ciência e Tecnologia (FCT) through the project UID/FIS/50010/2019 and through the individual grant PD/BD/135230/2017 under the APPLAuSE Doctoral Program. Catarina Vidal also acknowledges FCT for its financial support through the project UID/EMS/00667/2019. This publication reflects the views only of the authors, and Fusion for Energy cannot be held responsible for any use, which may be made of the information contained herein.
PY - 2020/7
Y1 - 2020/7
N2 - The ITER Plasma Position Reflectometry (PPR) system will be used to measure the plasma edge density profile at four locations, complementing the magnetic diagnostics. The components studied in this paper are the antennas and 90° bends of two of the PPR reflectometers installed inside the vacuum vessel, which are directly exposed to the plasma and thus subjected to significant thermal loads that may compromise the integrity of the system. The temperature distributions in these components was estimated with steady-state and transient thermal analyses performed with ANSYS Mechanical, following the load specification for the PPR in-vessel components and guidelines for thermal analyses issued by the IO. The results indicate that the maximum operation temperatures will be well above the limit of 450 °C for the selected material (stainless steel 316 L(N)-IG) under neutron irradiation. In face of these results, it is suggested that different materials, such as a nickel-based superalloy, are considered for the manufacturing of these components.
AB - The ITER Plasma Position Reflectometry (PPR) system will be used to measure the plasma edge density profile at four locations, complementing the magnetic diagnostics. The components studied in this paper are the antennas and 90° bends of two of the PPR reflectometers installed inside the vacuum vessel, which are directly exposed to the plasma and thus subjected to significant thermal loads that may compromise the integrity of the system. The temperature distributions in these components was estimated with steady-state and transient thermal analyses performed with ANSYS Mechanical, following the load specification for the PPR in-vessel components and guidelines for thermal analyses issued by the IO. The results indicate that the maximum operation temperatures will be well above the limit of 450 °C for the selected material (stainless steel 316 L(N)-IG) under neutron irradiation. In face of these results, it is suggested that different materials, such as a nickel-based superalloy, are considered for the manufacturing of these components.
KW - ITER
KW - Nuclear heat loads
KW - Plasma thermal radiation
KW - PPR system
KW - Temperature distribution
UR - http://www.scopus.com/inward/record.url?scp=85080075405&partnerID=8YFLogxK
U2 - 10.1016/j.fusengdes.2020.111599
DO - 10.1016/j.fusengdes.2020.111599
M3 - Article
AN - SCOPUS:85080075405
VL - 156
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
M1 - 111599
ER -