Abstract
SAFARI is an imaging Fourier Transform Spectrometer for 35-200 μm under development for flight on the Japanese IR-satellite SPICA (2018). The 3.25 m diameter actively cooled telescope (<6K) will provide a sky background limited signal, which implies that detectors will need to have an NEP of 3.5 × 10-19 W/√Hz in order not to be limiting the sensitivity. The instrument will utilize three TES-based detector arrays, covering the 2 × 2 arcmin field-of-view in three octaves of wave length. This contribution will present an overview of the detector sub-system, i.e.: the detector arrays and radiation coupling, the focal plane assembly, the amplification chain and the frequency-domain- multiplexed electronics. The focus will be on the implications on the system design of the readout under the stringent power dissipation, heat load, and weight limitations.
Original language | English (US) |
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Pages (from-to) | 561-567 |
Number of pages | 7 |
Journal | Journal of Low Temperature Physics |
Volume | 167 |
Issue number | 5-6 |
DOIs | |
State | Published - Jun 2012 |
Externally published | Yes |
Keywords
- FDM
- Multiplexing
- TES
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Condensed Matter Physics