Progress on the FDM Development at SRON: Toward 160 Pixels
Abstract
SRON is developing the electronic read-out for arrays of transition edge sensors using frequency domain multiplexing in combination with base-band feedback. The astronomical applications of this system are the read-out of soft X-ray micro-calorimeters in a potential instrument on the European X-ray mission-under-study Athena+ and far-IR bolometers for the Safari instrument on the Japanese mission SPICA. In this paper we demonstrate the simultaneous read-out of 38 bolometer pixels at a 12 aW/Hz dark NEP level. The stability of the read-out is assessed over 400 s. time spans. Although some 1/f noise is present, there are several bolometers for which 1/f-free read-out can be demonstrated.
- Publication:
-
Journal of Low Temperature Physics
- Pub Date:
- August 2014
- DOI:
- 10.1007/s10909-014-1117-5
- Bibcode:
- 2014JLTP..176..439D
- Keywords:
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- Transition edge sensors;
- Multiplexed readout;
- Bolometers;
- Microcalorimeters;
- Frequency domain multiplexing