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The Askaryan Radio Array (ARA) is a new detector designed to detect a few GZK neutrinos a year. It measures the enhanced radio-frequency radiation emitted during the interaction of the neutrino in Antarctic ice sheet. The detection is based on the Askaryan effect, an idea by Gurgen Askaryan [1][2]

This detection technique is also being used by the Antarctic Impulse Transient Antenna (ANITA) and the Radio Ice Cerenkov Experiment (RICE) detectors. The ARA experiment will be built around the IceCube experiment, and will cover an area of approximately 100 square kilometers.

A 16-antenna prototype station, the "ARA Testbed" , of the ARA system was installed January 2011 (season 2010–2011) and began operation allowing the ARA Collaboration to determine the estimated sensitivity of the array design:[3] ARA-37 will cover 200 km2 with neutrino sensitivity of 1016–1019 eV. Measurements of the radio background and ice attenuation length were reported.

The first ARA station was installed in the season (Antarctic summer season; winter in northern hemisphere) 2011–2012; stations 2 and 3 were installed in the season 2012–2013 and stations 4 and 5 in season 2017–2018. The ARA array had five stations as of 2018. The Phase 1 goal of ARA is 37 stations. [4]
Collaborators

University of Delaware
University of Hawaii
University of Kansas
University of Maryland
University of Nebraska
University of Wisconsin
Free University of Brussels (IIHE)
The Ohio State University
National Taiwan University
University College London
Technion – Israel Institute of Technology
Weizmann Institute of Science
University of Chicago

References

G.A. Askaryan (1962). "Excess Negative Charge of an Electron-Photon Shower And Its Coherent Radio Emission". Soviet Physics JETP. 14 (2): 441–443.
G.A. Askaryan (1965). "Coherent Radio Emission from Cosmic Showers in Air and in Dense Media". Soviet Physics JETP. 21 (3): 658. Bibcode:1965JETP...21..658A.
P. Allison; J. Auffenberg; R. Bard; J.J. Beatty; D.Z. Besson; S. Böser; C. Chen; P. Chen; A. Connolly; J. Davies; M. DuVernois; B. Fox; P.W. Gorham; E.W. Grashorn; K. Hanson; J. Haugen; K. Helbing; B. Hill; K.D. Hoffman; E. Hong; M. Huang; M.H.A. Huang; A. Ishihara; A. Karle; D. Kennedy; H. Landsman; T.C. Liu; L. Macchiarulo; K. Mase; T. Meures; R. Meyhandan; C. Miki; R. Morse; M. Newcomb; R.J. Nichol; K. Ratzlaff; M. Richman; L. Ritter; C. Rott; B. Rotter; P. Sandstrom; D. Seckel; J. Touart; G.S. Varner; M.-Z. Wang; C. Weaver; A. Wendorff; S. Yoshida; R. Young (February 2012). "Design and initial performance of the Askaryan Radio Array prototype EeV neutrino detector at the South Pole". Astroparticle Physics. 35 (7): 457. arXiv:1105.2854. Bibcode:2012APh....35..457A. doi:10.1016/j.astropartphys.2011.11.010.

"ARENA 2018 – Acoustic and Radio EeV Neutrino Detection Activities (12–15 June 2018) · Indico".

Further reading

Bahcall, John N. (1989). Neutrino Astrophysics. Cambridge University Press. ISBN 978-0-521-35113-3.
Griffiths, David J. (1987). Introduction to Elementary Particles. John Wiley & Sons. ISBN 978-0-471-60386-3.
Perkins, Donald H. (1999). Introduction to High Energy Physics. Cambridge University Press. ISBN 978-0-521-62196-0.
Askaryan Radio Array Home Page

vte

Neutrino detectors, experiments, and facilities
Discoveries

Cowan–Reines ( νe ) Lederman–Schwartz–Steinberger ( νμ) DONUT ( ντ) Neutrino oscillation SN 1987 neutrino burst

Operating
(divided by primary neutrino source)
Astronomical

ANITA ANTARES ASD BDUNT Borexino BUST HALO IceCube LVD NEVOD SAGE Super-Kamiokande SNEWS

Reactor

Daya Bay Double Chooz KamLAND RENO STEREO

Accelerator

ANNIE ICARUS (Fermilab) MicroBooNE MINERνA MiniBooNE NA61/SHINE NOνA NuMI T2K

0νββ

AMoRE COBRA CUORE EXO GERDA KamLAND-Zen MAJORANA NEXT PandaX SNO+ XMASS

Other

KATRIN WITCH

Construction

ARA ARIANNA Baikal-GVD BEST DUNE Hyper-Kamiokande JUNO KM3NeT SuperNEMO FASERν

Retired

AMANDA CDHS Chooz CNGS Cuoricino DONUT ERPM GALLEX Gargamelle GNO Heidelberg-Moscow Homestake ICARUS IGEX IMB K2K Kamiokande KARMEN KGF LSND MACRO MINOS MINOS+ NARC NEMO OPERA RICE SciBooNE SNO Soudan 2 Utah

Proposed

CUPID GRAND INO LAGUNA LEGEND LENA Neutrino Factory nEXO Nucifer SBND UNO JEM-EUSO WATCHMAN

Cancelled

DUMAND Project Long Baseline Neutrino Experiment NEMO Project NESTOR Project SOX BOREX

See also

BNO (Baksan or Baxan Neutrino Observatory) Kamioka Observatory LNGS SNOLAB List of neutrino experiments

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