Holzapfel Laboratory
for
Experimental Cosmology

ACBAR

(Arcminute Cosmology Bolometer Array Receiver) ACBAR is currently imaging the CMB at multiple frequencies with 4' resolution from the Viper telescope at the South Pole.

OVRO/BIMA SZ Imaging

The BIMA and OVRO arrays have been outfitted with cm wavelength receivers to image over 40 clusters of galaxies through observations of the SZ effect. These observations have been used to estimate the Hubble constant and baryon density.

BIMA Fine Anisotropy Survey

Observations with the BIMA array have led to a significant detection of arcminute scale Cosmic Microwave Background anisotropy. The most likely candidate for this signal of excess power is thought to be the SZ effect.

APEX-SZ

The APEX-SZ receiver, currently being commissioned at UCB, is a 320-pixel TES bolometer array that will be deployed at the APEX telescope near San Pedro de Atacama in Chile.

South Pole Telescope

The South Pole Telescope receiver is currently under construction at UCB. The 1000-pixel TES bolometer array receiver, when complete, will be deployed at the south pole to perform a wide, deep cluster survey using the SZ effect.

BICEP

(Background Imaging of Cosmological Extragalactic Polarization) BICEP will map degree-scale CMB polarization from the South Pole.

DASI

CBI