11 July 2008 Performances of the cryogenic system of GIANO-TNG
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GIANO-TNG is a cryogenic high resolution infrared spectrometer whose optics include large aspheric mirrors and cross-dispersing prisms mounted over a ≃1.5 m2 aluminum bench. To achieve the highest possible spectral stability and repeatability the bench is internally filled with liquid nitrogen whose boil-off pressure is actively controlled and stabilized to a fraction of mbar. The bench is isostatically mounted inside a ≃2.5 m3 cryostat. We present the characteristics and performances of the cryogenic system of GIANO which include, in particular, a temperature uniformity and long-term stability of a few mK and a remarkably low consumption of liquid nitrogen (less than 1 liter/hr).
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
I. Mochi, I. Mochi, E. Oliva, E. Oliva, L. Origlia, L. Origlia, C. Baffa, C. Baffa, V. Biliotti, V. Biliotti, G. Falcini, G. Falcini, E. Giani, E. Giani, M. Gonzalez, M. Gonzalez, E. Rossetti, E. Rossetti, M. Sozzi, M. Sozzi, M. Liffredo, M. Liffredo, G. Roveta, G. Roveta, L. Roccia, L. Roccia, "Performances of the cryogenic system of GIANO-TNG", Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70143U (11 July 2008); doi: 10.1117/12.788241; https://doi.org/10.1117/12.788241


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