We describe the Arcminute Cosmology Bolometer Array Receiver (ACBAR); a multifrequency millimeter-wave receiver designed for observations of the cosmic microwave background and the Sunyaev-Zel'dovich effect in clusters of galaxies. The ACBAR focal plane consists of a 16 pixel, background-limited, 240 mK bolometer array that can be configured to observe simultaneously at 150, 220, 280, and 350 GHz. With 4'-5' FWHM beams and a 3° azimuth chop, ACBAR is sensitive to a wide range of angular scales. ACBAR was installed on the 2 m Viper telescope at the South Pole in 2001 January. We describe the design of the instrument and its performance during the 2001 and 2002 observing seasons.
The Astrophysical Journal Supplement Series
- Pub Date:
- December 2003
- Cosmology: Cosmic Microwave Background;
- Galaxies: Clusters: General;
- Instrumentation: Miscellaneous;
- 59 pages, 16 figures -- updated to reflect version published in ApJS