CMB and Cosmology• Integrated program combines effort at LBNL + UCB• Strong program in theory, data analysis, algorithms

– MAXIPOL, Planck – Collaboration with NERSC

• New instrumentation enables new experiments– APEX-SZ, South Pole Telescope

• Galaxy Cluster Search - probe Dark Energy

– POLARBEAR design ripe for construction• CMB Polarization - probe Energy Scale of Inflation

• LBNL leads readout development• Program combines strengths of National Lab and

University

Atacama Pathfinder Experiment (APEX-SZ)

• 16,500 feet in Chilean Andes.• 12m on-axis ALMA prototype

Berkeley SZ Receiver:

• 330 Bolometer array• Discover 4000 Clusters/2yrs

– Mass limit > 4x1014 M0

• First Light Spring 2005.• LBNL responsible for readout

UC Berkeley/LBNLUC Berkeley/LBNL, , MPI-Bonn/Munich, MPI-Bonn/Munich,

CardiffCardiff

10m South Pole Telescope (SPT)and 1000 element Bolometer Array

Low noise, precision telescope• 20 m rms surface• 1 arc second pointing• 1.0 arcminute at 2 mm wavelength• ‘chop’ entire telescope• 3 levels of shielding

- ~1 m radius on primary- inner moving shields- outer fixed shields

SZE and CMB Anisotropy - 4000 sq deg SZE survey - deep CMB anisotropy fields - deep CMB Polarization fields

1000 Element Bolometer Array - 3 to 4 interchangeable bands (90) 150, 250 & 270 GHz - APEX-SZ style horn fed spider web absorbers

Principal InvestigatorsCarlstrom (UChicago)Holzapfel (UCB)Lee (UCB,LBNL)Leitch (UChicago)Meyer (UChicago)Mohr (U Illinois)Padin (UChicago)Pryke (UChicago)Ruhl (CWRU)Spieler (LBNL)Stark (CfA)

NSF-OPP funded & scheduled for Nov 2006 deploymentDoE (LBNL) funding of readout development

• Ground-Based 3 meter Telescope at UC Research Station on White Mountain– Optimized for CMB Polarization

• Characterize E-modes• Search for B-modes

• Novel Technology• Ready for Construction

– R&D under LDRD funding– Proposed to SAGENAP

POLARBEAR

3m Telescope Design by Vertex