Thermal Testing of the Compositional InfraRed Imaging Spectrometer (CIRIS)

摘要

The CIRIS device is a Fourier Transform (FT) spectrometer that utilizes a rotating refractor to induce the time-varying path length difference in split light beams. This design allows the spectrometer to be extremely compact, and eliminates linear accelerations associated with traditional Michelson FT spectrometers. Compared to grating spectrometers, CIRIS is inherently radiation-tolerant and has high signal-to-noise in the mid- to thermal IR, making it ideal for outer planetary and primitive body missions. We have developed a small-scale thermal/vacuum testing facility for rapid testing of the CIRIS prototype and similar instruments in cryogenic conditions relevant to an outer planetary orbital environment. Here we present results from testing the CIRIS prototype and several infrared detectors, including thermal and electrical performance of the system.