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APEX-SZ first light and instrument status

Dobbs, M., Halverson, N. W., Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Basu, K., Beelen, A., Bertoldi, F., Cohalan, C., Cho, H. M., Güsten, R., Holzapfel, W. L., Kermish, Z., Kneissl, R., Kovács, A., Kreysa, E., Lanting, T. M., Lee, A. T., Lueker, M., Mehl, J., Menten, K. M., Muders, D., Nord, M., Plagge, T., Richards, P. L., Schilke, P., Schwan, D., Spieler, H., Weiss, A. and White, M. 2006. APEX-SZ first light and instrument status. New Astronomy Reviews 50 (11-12) , pp. 960-968. 10.1016/j.newar.2006.09.029

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Abstract

The apex-sz instrument is designed for the discovery and study of galaxy clusters at mm-wavelengths using the Sunyaev Zel’dovich effect. The receiver consists of 320 superconducting transition edge sensor (TES) bolometers cooled to 250 mK with the combination of a three stage He sorption fridge and mechanical pulse tube cooler. The detectors are instrumented with a frequency domain multiplexing readout system. The receiver is mounted on the 12 m apex telescope located at 5100 m on the Atacama plateau in Chile. For the first light engineering deployment of December 2005, the receiver was configured with a 55 element wedge of the bolometers and operating in the 150 GHz atmospheric window. During the engineering run we achieved significant milestones in our instrumentation development efforts, including celestial observations with a monolithically fabricated TES bolometer array cooled with a mechanical cooler and successful implementation of a SQUID-based MHz AC-biased readout. These technology demonstrations point the way toward future large TES bolometer array instruments. Here we describe the results of this deployment and future plans for the apex-sz instrument.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: Cosmology; Observations; Galaxies; Clusters
Additional Information: Workshop on Fundamental Physics with Cosmic Microwave Background Radiation
Publisher: Elsevier
ISSN: 1387-6473
Last Modified: 25 Oct 2022 09:49
URI: https://orca.cardiff.ac.uk/id/eprint/60177

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