9 August 2016 Development of cryogenic components based on COTS parts for the HARMONI instrument
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HARMONI is an integral field spectrograph working at visible and near-infrared wavelengths. The instrument will be part of the first-light complement at the E-ELT. The IAC is in charge of several work packages and the design of two important components is ongoing: A 'Cryogenic Pupil Mask Rotator' based on a direct drive brushless motor, and a 'Cryogenic Fast Shutter' based on voice coil. One of the main goals of these developments is the use of COTS (Commercial-Off-The-Shelf) parts since their use will reduce costs and short the schedule. Nevertheless, the application of COTS parts in cryo-vacuum is often very difficult and represents a technological challenge.
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José V. Gigante, Elvio Hernández, Luis F. Rodríguez-Ramos, Cristian Estévez, Antonio F. Moreno, Begoña Garcia-Lorenzo, José M. Herreros, Evencio Mediavilla, Ian Bryson, Fraser Clarke, Niranjan Thatte, "Development of cryogenic components based on COTS parts for the HARMONI instrument", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99089U (9 August 2016); doi: 10.1117/12.2232586; https://doi.org/10.1117/12.2232586


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