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Rev Sci Instrum. 2012 Nov;83(11):114502. doi: 10.1063/1.4764581.

Design, realization, and characteristics of a transition edge bolometer for sub-millimeter wave astronomy.

Author information

1
Institute of Photonic Technology, D-07745 Jena, Germany. torsten.may@ipht-jena.de

Abstract

The large array bolometer camera is scheduled to succeed its semiconducting predecessor at the Atacama pathfinder experiment. It shall be an array of 300 transition edge sensors operated at a temperature of about 0.25 K, provided by a (3)He evaporation cooler and a pulse tube refrigerator. The instrument will be read out by a superconducting quantum interference device time domain multiplexer. The design and realization of a suitable detector for this instrument is described. Based on sensitivity demands derived from the background limit, the thermal and electrical designs for a spider-web bolometer are deduced. The theoretical predictions are compared to experimental results. The pixel design yields a background-limited performance for background loads corresponding to blackbody sources between 77 K and 300 K and a partially effective anti-aliasing filter for the intended multiplexed readout.

PMID:
23206078
DOI:
10.1063/1.4764581

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