Conference Proceedings
Further optimization of the APEX-SZ TES bolometer array
B Westbrook, PAR Ade, AN Bender, HM Cho, J Clarke, M Dobbs, D Ferrusca, NW Halverson, WL Holzapfel, BR Johnson, J Kennedy, Z Kermish, T Lanting, AT Lee, M Lueker, J Mehl, X Meng, T Plagge, CL Reichardt, PL Richards Show all
Aip Conference Proceedings | AMER INST PHYSICS | Published : 2009
DOI: 10.1063/1.3292353
Abstract
We describe the recent reoptimization of the detector array in the APEX-SZ receiver, which is currently operating at the APEX telescope in Chile. APEX-SZ is designed to image the Sunyaev Zel'dovich effect (SZE). Observations are made in a single spectral band centered on 150 GHz, which is where the decrement of the SZE peaks. The APEX-SZ transition-edge sensor bolometers are micro-fabricated in six 55-element sub arrays, which combine to form the full 330-element focal plane operating at 280 mK. We report on the newest generation of sub-arrays that use a λ/4 silicon-filled backshort. Compared to the first generation array which used a 3λ/4 backshort, the new arrays have a broader bandwidth a..
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