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28 June 2006 The REMIR cryogenics restyling
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Abstract
REMIR is the NIR camera of the automatic REM (Rapid Eye Mount) Telescope located at ESO-La Silla Observatory (Chile) and dedicated to monitor the afterglow of Gamma Ray Burst events. During the last two years, the REMIR camera went through a series of cryogenics problems, due to the bad functioning of the Leybold cryocooler Polar SC7. Since we were unable to reach with Leybold for a diagnosis and a solution for such failures, we were forced to change drastically the cryogenics of REMIR, going from cryocooler to LN2: we adopted an ad-hoc modified Continuous Flow Cryostat, a cryogenics system developed by ESO and extensively used in ESO instrumentation, which main characteristic is that the LN2 vessel is separated from the cryostat, allowing a greater LN2 tank, then really improving the hold time. In this paper we report the details and results of this operation.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
F. Vitali, J. L. Lizon, G. Ihle, M. Accardo, L. Gonzales, P. Sinclaire, J. Pineda, A. Pizarro, J. Valenzuela, P. Conconi, F. D'Alessio, V. De Caprio, M. Riva, E. Molinari, G. Chincarini, F. M. Zerbi, M. Rodonò, S. Covino, V. Testa, G. Tosti, L. A. Antonelli, G. Malaspina, and E. Palazzi "The REMIR cryogenics restyling", Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 626954 (28 June 2006); doi: 10.1117/12.671197; https://doi.org/10.1117/12.671197
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