Optical performance of prototype horn-coupled TES bolometer arrays for SAFARI
2016
The SAFARI Detector Test Facility is an ultra-low background optical testbed for characterizing ultra-sensitive
prototype horn-coupled TES bolmeters for SAFARI, the grating spectrometer on board the proposed SPICA satellite.
The testbed contains internal cold and hot black-body illuminators and a light-pipe for illumination with an external
source. We have added reimaging optics to facilitate array optical measurements. The system is now being used for
optical testing of prototype detector arrays read out with frequency-domain multiplexing. We present our latest optical
measurements of prototype arrays and discuss these in terms of the instrument performance.
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