D Schwan, P A R Ade, K Basu, A N Bender, F Bertoldi, H-M Cho, G Chon, John Clarke, M Dobbs, D Ferrusca, R Güsten, N W Halverson, W L Holzapfel, C Horellou, D Johansson, B R Johnson, J Kennedy, Z Kermish, R Kneissl, T Lanting, A T Lee, M Lueker, J Mehl, K M Menten, D Muders, F Pacaud, T Plagge, C L Reichardt, P L Richards, R Schaaf, P Schilke, M W Sommer, H Spieler, C Tucker, A Weiss, B Westbrook, O Zahn
The Atacama pathfinder experiment Sunyaev-Zel'dovich (APEX-SZ) instrument is a millimeter-wave cryogenic receiver designed to observe galaxy clusters via the Sunyaev-Zel'dovich effect from the 12 m APEX telescope on the Atacama plateau in Chile. The receiver contains a focal plane of 280 superconducting transition-edge sensor (TES) bolometers instrumented with a frequency-domain multiplexed readout system. The bolometers are cooled to 280 mK via a three-stage helium sorption refrigerator and a mechanical pulse-tube cooler...
September 2011: Review of Scientific Instruments