13 September 2012 Cryogenic fast shutter design and test results for the MATISSE instrument
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Matisse is a four channel mid-infrared spectro-interferometric instrument for ESO's Very Large Telescope Interferometer (VLTI). A battery of 8 cryogenic shutters selects the active telescopes at the entrance of the cold optics subsystem. For thermal stability of the system, the shutter uses a minimum amount of power for switching. On top of that the shutter must block incoming beams within 30 milliseconds for detector remanence calibration. A fast shutter was designed, meeting these requirements at both ambient temperature and in a 38 K vacuum cryogenic environment. This paper describes the design of this fast shutter and discusses the test results.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jan Kragt, Eddy Elswijk, Albert van Duin, "Cryogenic fast shutter design and test results for the MATISSE instrument", Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84504F (13 September 2012); doi: 10.1117/12.926226; https://doi.org/10.1117/12.926226

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