The as-manufactured design of the cryostat for ELT/METIS
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Author / Producer
Date
2024
Publication Type
Conference Paper
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yes
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Abstract
We present the as-manufactured design of the cryostat of the Mid-infrared ELT Imager and Spectrograph (METIS) instrument to be operated at ESO's Extremely Large Telescope (ELT). The cryostat provides the cold optics of the instrument with the required cryo-vacuum environment. The radiation shields of the cryostat are cooled with liquid nitrogen and the cold optics is cooled via pulse-tube coolers down to temperatures between 35 K and 70 K. The cold-warm interface is provided with G10 blades that build together with the top part of the cryostat vessel the structural interface to the cold optics, the warm support structure, and the warm calibration source. The cryostat design is now finalized with most of the parts already produced and final integration on-going. We present in this paper the final design as manufactured, the key design considerations, and highlights from the integration phase.
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Publication status
published
External links
Book title
Ground-based and Airborne Telescopes X
Journal / series
Volume
13094
Pages / Article No.
Publisher
SPIE
Event
SPIE Astronomical Telescopes + Instrumentation 2024
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Instrumentation; METIS; ELT; Cryostat; Integration; LN2
Organisational unit
09680 - Quanz, Sascha Patrick / Quanz, Sascha Patrick