CMB Experiments

Below is a list of known CMB experiments, with links to their home pages (if available), a brief description, and, whenever possible, links to internal LAMBDA pages which provide the publicly available data from these experiments. LAMBDA serves as a long-term repository for these archives. If an experiment of interest to you is missing from the list, or there is experimental data you would like to provide, please contact us via the suggestion form.

The left-most column contains links to the individual project websites, which will typically provide the most comprehensive collections of data. The second column contains links to project data held at LAMBDA. Initially the data at LAMBDA might be a subset of the data at the project website, but the LAMBDA holdings will grow with time and they will be maintained as a permanent archive.

A list of surveys with observations of polarized foregrounds is also available.

Click on to view an experiment's sky footprint.

Cosmic Microwave Background Anisotropy
Links to Project Website	Data At LAMBDA	Full Name	Year	Status	l-min	l-max	Frequ- ency (GHz)	Detectors	Polariz- ation Values	Type
ABS	DATA	Atacama B-mode Search	2011 - 2014	Completed	25	200	145	Bolometer	Yes	Ground
ACBAR	DATA	Arcminute Cosmology Bolometer Array Receiver	2001 - 2008	Completed	60	2700	150, 219, 274	Bolometer	No	Ground
ACME/ HACME		Advanced Cosmic Microwave Explorer / HEMT+ACME	1988 - 1996	Completed	10	180	26-35 and 38-45	HEMT	No	Ground
ACT	DATA	Atacama Cosmology Telescope	2008	Active	500	10000	148, 218, 277	Bolometer	No	Ground
ACTPol	DATA	Atacama Cosmology Telescope - Polarization	2013	Active	225	8725	90, 146	Bolometer	Yes	Ground
Advanced ACTPol	DATA	Advanced Atacama Cosmology Telescope - polarization	2016	Active	225	8725	28, 41, 90, 150, 230	Bolometer	Yes	Ground
AMI		Arcminute MicroKelvin Imager	2005	Active	n/a	22000	12-18	Interferometer	No	Ground
APACHE		Antarctic PlateauAnisotropy CHasing Experiment	1995 - 1996	Completed	-	-	100, 150, 250	Bolometer	No	Ground
Archeops	DATA	Archeops	1999 - 2002	Completed	10	700	143, 217, 353, 545	Bolometer	Yes	Balloon
ARGO		ARGO	1988 - 1988 1990 - 1990 1993 - 1993	Completed	53	180	150-600	Bolometer	No	Balloon
ATCA		Australia Telescope Compact Array	1991 - 1997	Completed	3350	6050	8.7	HEMT	No	Ground
BAM		Balloon- borne Anisotropy Measurement	1995 - 1995	Completed	30	100	110-250	Liquid-helium cooled, Fourier transform spectrometer	No	Balloon
BaR-SPOrt		Balloon-borne Radiometers for Sky Polarisation Observations		Cancelled	100	1000	32, 90	Polarizer/OMT	Yes	Balloon
BEAST		Background Emission Anisotropy Scanning Telescope	2000	Active	10	1000	100 and 150	HEMT	Yes	Balloon Ground
BICEP Array		BICEP/Keck	2020	Active	21	335	30, 40, 95, 150, 220, 270	Bolometer	Yes	Ground
BICEP1	DATA	Background Imaging of Cosmic Extragalactic Polarization	2006 - 2008	Completed	21	335	100, 150, 220	Bolometer	Yes	Ground
BICEP2	DATA	BICEP/Keck	2010 - 2012	Completed	21	335	95	Bolometer	Yes	Ground
BICEP3	DATA	BICEP/Keck	2015	Active	21	335	95	Bolometer	Yes	Ground
BIMA		Berkeley Illinois Maryland Associations	1986 - 2004	Completed	5237	8749	70-116, and 210-270	SIS	No	Ground
BOOMERanG	DATA	Balloon Observations Of Millimetric Extragalactic Radiation AND Geophysics	1997 - 2003	Completed	25	1025	90-420	Bolometer	Yes	Balloon
Boughn et al. 1981 Cheng et al. 1979		Boughn et al. measurements	1975 - 1975 1978 - 1978 1980 - 1980	Completed	1	2	19.0, 24.8, 31.4, 46.0	Dicke-switched	No	Balloon
CAPMAP	DATA	Cosmic Anisotropy Polarization MAPper	2002 - 2008	Completed	500	1500	90 and 40	MMIC/ HEMT	Yes	Ground
CAT		Cosmic Anisotropy Telescope	1994 - 1997	Completed	339	722	13-17	Interferometer/ HEMT	No	Ground
CBI	DATA	Cosmic Background Imager	2002 - 2008	Completed	300	3000	26-36,in 10 channels	Interferometer/ HEMT	No	Ground
CG		Cosmological Gene	1997 - 2009	Completed	100	1000	0.6 to 32	HEMT	No	Ground
CLASS	DATA	Cosmology Large-Angular Scale Surveyor	2016	Active	2	200	40, 90, 150, 220	Bolometer	Yes	Ground
Clover		Clover		Cancelled	20	1000	97, 150 and 230	Bolometer	Yes	Ground
CMB-HD		Cosmic Microwave Background - High Definition		Future	100	35000	30, 40, 90, 150, 220, 280, 350	Bolometer	Yes	Ground
CMB-S4		CMB-S4		Future	21	11000	20, 30, 40, 90, 150, 220, 270	Bolometer	Yes	Ground
COBE/DMR	DATA	Cosmic Background Explorer Differential Microwave Radiometer	1989 - 1993	Completed	2	40	31.5, 53, 90	-	No	Satellite
COMPASS		COsmic Microwave Polarization At Small Scales	2001 - 2001	Completed	200	600	26-36	HEMT	Yes	Ground
COSMOSOMAS		COSMOlogical Structures On Medium Angular Scales	1998 - 2007	Completed	10	200	10-18	HEMT	No	Ground
DASI	DATA	Degree Angular Scale Interfer-ometer	2001 - 2003	Completed	200	900	26-36,in 10 bands	HEMT	Yes	Ground
EBEX		The E and B Experiment	2012 - 2013	Completed	25	1000	150-450	Bolometer	Yes	Balloon
FIRS		Far Infra-Red Survey	1989 - 1989	Completed	3	29	170-680	Bolometer	No	Balloon
Fixsen et al. 1983		Princeton group measurements	1983 - 1983	Completed	1	18	24.5	Heterodyne	No	Balloon
GroundBIRD		Ground B-mode Imaging Radiation Detector		Future	6	300	145, 220	MKID	Yes	Ground
Halpern et al. 1988		UBC/MIT group measurements	1974 - 1981	Completed	1	1	36-240, 150-540	Bolometer	No	Balloon
Keck Array	DATA	BICEP/Keck	2012 - 2020	Completed	21	335	95,150,220,270	Bolometer	Yes	Ground
KUPID		KU-band Polarization IDentifier	2003 - 2006	Completed	100	600	12-18	HEMT	Yes	Ground
LiteBIRD		(Lite) B-mode polarization & Inflation from cosmic background Radiation Detection		Future	2	200	40, 50, 60, 68, 78, 89, 100, 119, 140, 166, 195, 235, 280, 337, 402	Bolometer	Yes	Satellite
LSPE		Large Scale Polarization Explorer		Future	2	100	43, 90, 95, 145, 245	HEMT/Bolometer	Yes	Balloon Ground
Lubin et al. 1985 Lubin et al. 1983		Berkeley group measurements	1981 - 1982	Completed	1	26	90	Heterodyne	No	Balloon
MAT		Mobile Anisotropy Telescope	1997 - 1997 1998 - 1998	Completed	30	1100	30-140	HEMT/SIS	No	Ground
MAXIMA	DATA	Millimeter Anisotropy eXperiment Imaging Array	1995 - 1995 1998 - 1998 1999 - 1999	Completed	50	700	150-420	Bolometer	No	Balloon
MAXIPOL		MAXIPOL	2002 - 2002 2003 - 2003	Completed	151	693	150-410	Bolometer	Yes	Balloon
MBI-B		Millimeter-Wave Bolometric Interferometer		Future -- see QUBIC	360	16000	90	Bolometer	Yes	Ground
Melchiorri et al. 1981 Fabbri et al. 1980		Melchiorri group measurements	1978 - 1978	Completed	1	30	100-600	Bolometer	No	Balloon
MINT		Millimeter INTerferometer	2001 - 2002	Completed	1000	3000	150	SIS	No	Ground
MIPOL	DATA	Milano Polarimeter	1993 - 2011	Completed	7	27	33	HEMT preamplifiers, Schotky diodes	Yes	Ground
MSAM	DATA	Medium Scale Anisotropy Measurement	1992 - 1997	Completed	69	362	150-650	Bolometer	No	Balloon
PICO		Probe of Inflation and Cosmic Origins		Future	2	4000	21, 25, 30, 36, 43, 52, 62, 75, 90, 108, 129, 155, 186, 223, 268, 321, 385, 462, 555, 666, 799	Bolometer	Yes	Satellite
PIPER		Primordial Inflation Polarization Explorer		Future	-	-	200, 270, 350, 600		Yes	Balloon
PIQUE		Princeton I, Q, and U Experiment	2002 - 2002	Completed	69	362	90	Bolometer	Yes	Ground
Planck	DATA	Planck	2009 - 2013	Completed	2	2500	30 -- 857	Radio, Bolometer	Yes	Satellite
POLAR		Polarization Observations oF Large Angular Regions	2000 - 2000	Completed	2	30	26-36	HEMT	Yes	Ground
POLARBEAR	DATA	POLARization of Background microwave Radiation	2012	Active	50	2000	150	Bolometer	Yes	Ground
POLARBEAR-2		POLARization of Background microwave Radiation 2		Future -- see Simons Array	30	3000	95, 150	Bolometer	Yes	Ground
Polartron		Polatron		Cancelled	200	2000	100	Bolometer	Yes	Ground
Python		Python	1992 - 1997	Completed	55	240	30-90	Bolometer/ HEMT	No	Ground
QMAP	DATA	QMAP	1996 - 1996	Completed	30	850	30-140	HEMT/SIS	No	Balloon
QMASK	DATA	QMAP and Saskatoon (SK) Data Combination	1993 - 1996	Completed	40	335	26-46	HEMT,HEMT/SIS	No	Balloon Ground
QUaD	DATA	QUEST (Q and U Extra-Galactic Sub-mm Telescope) and DASI (Degree Angular Scale Interferometer)	2005 - 2010	Completed	~200	2000	100, 150	Bolometer	Yes	Ground
QUBIC		Q & U Bolometric Interferometer for Cosmology		Future	30	200	150, 220	Bolometric Interferometer	Yes	Ground
QUIET	DATA	QU Imaging ExperimenT	2008 - 2010	Completed	60	3500	40, 90	HEMT	Yes	Ground
QUIJOTE	DATA	Q U I JOint TEnerife	2012	Active	10	300	11, 13, 17, 19, 30, 40	Polarizer/OMT	Yes	Ground
Relikt		Relikt	1983 - 1984	Completed			37	-	No	Satellite
Simons Array		Simons Array		Future	30	3000	90, 150, 220, 270	Bolometer	Yes	Ground
Simons Observatory		Simons Observatory		Future	30	8000	27, 39, 90, 150, 220, 270	Bolometer	Yes	Ground
SK		Saskatoon	1993 - 1995	Completed	52	401	26-46	HEMT	Yes	Ground
Smoot and Lubin 1979 Smoot et al. 1977		Smoot et al. measurements	1976 - 1976 1977 - 1977 1979 - 1979	Completed	1	2	33	Heterodyne	No
SPIDER	DATA	Spider	2015	Active	10	300	90, 150, 280	Bolometer	Yes	Balloon
SPOrt		Sky Polarization Observatory		Cancelled			22 -- 90	-	Yes	Satellite
SPT	DATA	South Pole Telescope	2007	Active	650	9500	95, 150, 220	Bolometer	No	Ground
SPT-3G		South Pole Telescope - third generation	2018	Active	50	11000	95, 150, 220	Bolometer	Yes	Ground
SPT-3G+		SPT-3G+		Future	50	11000	220, 285, 345	Kinetic Inductance Detectors	No	Ground
SPTpol	DATA	South Pole Telescope - Polarization	2012	Active	50	8000	95, 150	Bolometer	Yes	Ground
Taurus		Taurus		Future	2	300	150, 220, 280, 350	Bolometer	Yes	Balloon
Tenerife		Tenerife	1984 - 2000	Completed	13	30	10, 15, 33	HEMT	No	Ground
TopHat		TopHat	2002 - 2004	Completed	10	700	150-720	Bolometer	No	Balloon
VSA	DATA	Very Small Array	2002 - 2004	Completed	130	1800	26-36	Interferometer/ HEMT	No	Ground
WMAP	DATA	Wilkinson Microwave Anisotropy Probe	2001 - 2010	Completed	2	1200	23, 33, 41, 61, 94	HEMT	Yes	Satellite
YTLA (formerly AMiBA)		Yuan-Tseh Lee Array	2007 - 2017	Completed	n/a	4300	90	Interferometer/HEMT	Yes	Ground
Cosmic Microwave Background Spectrum
ARCADE	DATA	Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission	2001 - 2006	Completed	n/a	n/a	3, 5, 7, 10, 30, 90	HEMT	No	Balloon
COBE/FIRAS	DATA	Cosmic Background Explorer Far Infrared Absolute Spectrophotometer	1989 - 1990	Completed	n/a	n/a	30-2910	Bolometer	No	Satellite
South Pole	DATA	South Pole (Berkeley, Milano) collaboration	1989 - 1992	Completed	n/a	n/a	0.82, 1.47, 2.0, 2.5, 3.8, 7.5, 90	Heterodyne systems, RF gain total power systems, LNA	No	Ground
TRIS	DATA	Three Radiometer CMB Spectrum Experiment	1994 - 2000	Completed	n/a	n/a	0.6, 0.82, 2.5		No	Ground
WhiteMountain	DATA	White Mt. (Berkeley, Bologna, Haverford, Milano, Padova) collaboration	1982 - 1983	Completed	n/a	n/a	2.5, 4.75, 9.4, 10, 33, 90	Dicke-switched, heterodyne systems, LNA preamplifiers	No	Ground
Sunyaev-Zeldovich Effect
APEX-SZ		Atacama Pathfinder EXperiment	2007	Completed	3000	10000	150, 217	Bolometer	No	Ground
MUSTANG/MUSTANG2		MUltiplexed Squid/Tes Array for Ninety Gigahertz	2007	Active	1300,6000	40000	90	Bolometer	No	Ground
SuZIE		Sunyaev-Zeldovich Infrared Experiment	1996	Active	1000	3700	150, 220, 350	Bolometer	No	Ground
SZA		Sunyaev- Zeldovich Array	2004	Completed	-	-	26-36 and 85-115	Interferometer	No	Ground