Speaker
Sven Gutruf
(Kampf Telescope Optics)
Description
The H-alpha and Visible Spectroscopy Diagnostic shall measure spectrally, spatially and temporally resolved emission of hydrogen isotopes and impurities in the ITER scrape-off layer. There are four H-alpha diagnostic channels, located in 3 port plugs.
In the current design status, all main interfaces have been iterated with the Port Integrator. All major subsystems, of this complete end to end design for spectral and imaging channels, are defined in detail and their functional compliance w.r.t. the system performance and structural integrity has been assessed by analysis.
The thermal and mechanical loads to be sustained from the in-vessel components are high. This is the case for the First Mirror Unit (FMU) and hot dogleg (HDL) mirrors, making the labyrinth between the FMU and the vacuum window assembly in the Port Plug. The compliance of the HDL design w.r.t. the system performance and structural integrity has recently been successfully verified by vibration tests performed on a HDL breadboard.
The full preparatory work starting with IO-CT delivered set of appropriate power spectral density (PSD) and followed by the test predictions with ANSYS, will be described in detail. The delivered PSD has been adapted to our nodes taking the appropriate floor response spectra into account. Moreover the displacements of the HDL M3 node as function of time has been used to compute the corresponding accelerations as input for the PSD calculation. Finally an envelope of all PSDs was constructed and used as input for the random vibration test for all axis of excitation.
This presentation describes the test approach, procedure and successful results of the test campaign. It will be explained how vibration loads to be applied to the system have been derived. The analysed results will be presented together with images of the setup and videos of the vibration test.
Co-authors
Arnd Reutlinger
(Kampf Telescope Optics, Munich, Germany)
Dirk Kampf
(Kampf Telescope Optics, Munich, Germany)
Dmitry Vukolov
(NRC Kurchatov Institute & Fusion Center, Moscow, Russian Federation)
G. Andrey Alekseev
(NRC Kurchatov Institute & Fusion Center, Moscow, Russian Federation)
Nancy Ageorges
(Kampf Telescope Optics, Munich, Germany)
Sven Gutruf
(Kampf Telescope Optics, Munich, Germany)
