scholarly journals Baikal-GVD: cascades

2019 ◽  
Vol 207 ◽  
pp. 05001
Author(s):  
A.D. Avrorin ◽  
A.V. Avrorin ◽  
V.M. Aynutdinov ◽  
R. Bannash ◽  
I.A. Belolaptikov ◽  
...  
Keyword(s):  
Lake Baikal ◽  
High Energy ◽  
Neutrino Telescope ◽  
Next Generation ◽  
Preliminary Results ◽  
Astrophysical Neutrinos ◽  
Neutrino Fluxes ◽  
Under Construction ◽  
Early Phases ◽  
Astrophysical Neutrino

Baikal-GVD is a next generation, kilometer-scale neutrino telescope currently under construction in Lake Baikal. GVD is formed by multi-megaton subarrays (clusters) and is designed for the detection of astrophysical neutrino fluxes at energies from a few TeV up to 100 PeV. The design of Baikal-GVD allows one to search for astrophysical neutrinos with flux values measured by IceCube already at early phases of the array construction. We present here preliminary results of the search for high-energy neutrinos via the cascade mode obtained in 2015 and 2016.

scholarly journals Baikal-GVD: status and prospects

2018 ◽  
Vol 191 ◽  
pp. 01006 ◽  
Author(s):  
A.D. Avrorin ◽  
A.V. Avrorin ◽  
V.M. Aynutdinov ◽  
R. Bannash ◽  
I.A. Belolaptikov ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Neutrino Telescope ◽  
Full Scale ◽  
Next Generation ◽  
The Third ◽  
Neutrino Fluxes ◽  
Under Construction ◽  
Demonstration Cluster ◽  
Astrophysical Neutrino

Baikal-GVD is a next generation, kilometer-scale neutrino telescope under construction in Lake Baikal. It is designed to detect astrophysical neutrino fluxes at energies from a few TeV up to 100 PeV. GVD is formed by multi-megaton subarrays (clusters). The array construction started in 2015 by deployment of a reduced-size demonstration cluster named "Dubna" . The first cluster in it’s baseline configuration was deployed in 2016, the second in 2017 and the third in 2018. The full-scale GVD will be an array of ~10.000 light sensors with an instrumented volume about of 2 cubic km. The first phase (GVD-1) is planned to be completed by 2020-2021. It will comprise 8 clusters with 2304 light sensors in total. We describe the design of Baikal-GVD and present selected results obtained in 2015 - 2017.

scholarly journals Baikal-GVD: first results and prospects

2019 ◽  
Vol 209 ◽  
pp. 01015 ◽  
Author(s):  
A.D. Avrorin ◽  
A.V. Avrorin ◽  
V.M. Aynutdinov ◽  
R. Bannash ◽  
I.A. Belolaptikov ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Neutrino Telescope ◽  
Effective Volume ◽  
Next Generation ◽  
Preliminary Results ◽  
High Energies ◽  
First Results ◽  
Under Construction ◽  
Relativistic Particles

Next generation cubic kilometer scale neutrino telescope Baikal-GVD is currently under construction in Lake Baikal. The detector is specially designed for search for high energies neutrinos whose sources are not yet reliably identified. Since April 2018 the telescope has been successfully operated in complex of three functionally independent clusters i.e. sub-arrays of optical modules (OMs) where now are hosted 864 OMs on 24 vertical strings. Each cluster is connected to shore by individual electro-optical cables. The effective volume of the detector for neutrino initiated cascades of relativistic particles with energy above 100 TeV has been increased up to about 0.15 km3. Preliminary results obtained with data recorded in 2016 and 2017 are discussed.

scholarly journals Time calibration of the neutrino telescope Baikal-GVD

2019 ◽  
Vol 207 ◽  
pp. 07003 ◽  
Author(s):  
A.D. Avrorin ◽  
A.V. Avrorin ◽  
V.M. Aynutdinov ◽  
R. Bannash ◽  
I.A. Belolaptikov ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Neutrino Telescope ◽  
Energy Position ◽  
Optimal Energy ◽  
Time Calibration ◽  
Under Construction

Baikal-GVD is a cubic-kilometer scale neutrino telescope, which is currently under construction in Lake Baikal. Baikal-GVD is an array of optical modules arranged in clusters. The first cluster of the array has been deployed and commissioned in April 2015. To date, Baikal-GVD consists of 3 clusters with 864 optical modules. One of the vital conditions for optimal energy, position and direction reconstruction of the detected particles is the time calibration of the detector. In this article, we describe calibration equipment and methods used in Baikal-GVD and demonstrate the accuracy of the calibration procedures.

scholarly journals Particle Physics with ORCA

2019 ◽  
Vol 207 ◽  
pp. 04003
Author(s):  
Alba Domi ◽  
Simon Bourret ◽  
Liam Quinn
Keyword(s):  
Dark Matter ◽  
Particle Physics ◽  
High Energy ◽  
Neutrino Telescope ◽  
Atmospheric Neutrinos ◽  
Sterile Neutrinos ◽  
Tau Neutrino ◽  
Neutrino Astronomy ◽  
Under Construction

KM3NeT is a Megaton-scale neutrino telescope currently under construction at the bottom of the Mediterranean Sea. When completed, it will consist of two separate detectors: ARCA (Astroparticle Research with Cosmics in the Abyss), optimised for high-energy neutrino astronomy, and ORCA (Oscillation Research with Cosmics in the Abyss) for neutrino oscillation studies of atmospheric neutrinos. The main goal of ORCA is the determination of the neutrino mass ordering (NMO). Nevertheless it is possible to exploit ORCA’s configuration to make other important measurements, such as sterile neutrinos, non standard interactions, tau-neutrino appearance, neutrinos from Supernovae, Dark Matter and Earth Tomography studies. Part of these analyses are summarized here.

PRELIMINARY RESULT FROM ANITA EXPERIMENT

2008 ◽  
Vol 23 (17n20) ◽  
pp. 1419-1430 ◽  
Author(s):  
◽  
JIWOO NAM ◽  
P. W. Gorham ◽  
S. W. Barwick ◽  
J. J. Beatty ◽  
...  
Keyword(s):  
Broad Band ◽  
Austral Summer ◽  
Neutrino Telescope ◽  
Horn Antennas ◽  
Preliminary Results ◽  
Astrophysical Neutrinos ◽  
Antarctic Impulsive Transient Antenna ◽  
The Antarctic

The ANITA (ANtarctic Impulsive Transient Antenna) experiment is a balloon-borne neutrino telescope which consists of an array of 32 broad-band horn antennas. It successfully completed a 35 day flight over Antarctica during the 2006-2007 austral summer. The primary goal of ANITA is to search for astrophysical neutrinos with energies E > 1019eV by detecting radio Cherenkov signals from neutrino induced showers in the Antarctic ice. We present preliminary results from ongoing analyses of ANITA data.

scholarly journals THE BAIKAL NEUTRINO TELESCOPE — RESULTS AND PLANS

2005 ◽  
Vol 20 (29) ◽  
pp. 6932-6936 ◽  
Author(s):  
◽  
RALF WISCHNEWSKI ◽  
V. AYNUTDINOV ◽  
V. BALKANOV ◽  
I. BELOLAPTIKOV ◽  
...  
Keyword(s):  
Northern Hemisphere ◽  
High Energy ◽  
Neutrino Telescope ◽  
Muon Neutrino ◽  
Effective Volume ◽  
Diffuse Flux ◽  
High Energy Muon ◽  
Astrophysical Neutrinos

New results from the Baikal neutrino telescope NT200, based on the first 5 years of operation (1998–2003), are presented. We derive an all-flavor limit on the diffuse flux of astrophysical neutrinos between 20 TeV and 50 PeV, extract an enlarged sample of high energy muon neutrino events, and obtain limits on the flux of high energy atmospheric muons. In 2005, the upgraded telescope NT200+ will be commissioned: 3 additional distant strings with only 12 photo-multipliers each will rise the effective volume to 20 Mton at 10 PeV for this largest running neutrino telescope in the Northern hemisphere.

scholarly journals Spatial positioning of underwater components for Baikal- GVD

2019 ◽  
Vol 207 ◽  
pp. 07004 ◽  
Author(s):  
A.D. Avrorin ◽  
A.V. Avrorin ◽  
V.M. Aynutdinov ◽  
R. Bannash ◽  
I.A. Belolaptikov ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Spatial Orientation ◽  
Reconstruction Error ◽  
Neutrino Telescope ◽  
Positioning System ◽  
Timing Error ◽  
Positioning Accuracy ◽  
Under Construction ◽  
Spatial Positioning

Baikal-GVD is a cubic kilometer-scale neutrino telescope currently under construction in Lake Baikal. The detector’s components are mobile and may drift from their initial coordinates or change their spatial orientation. This introduces a reconstruction error, particularly a timing error for PMT hits. This problem is mitigated by a combination of a hydroacoustic positioning system and per-component acceleration and orientation sensors. Under regular conditions, the average positioning accuracy for a GVD component is estimated to be less than 13 cm.

scholarly journals Analysis of High Energy Starting Events with the KM3NeT/ARCA detector

2019 ◽  
Vol 207 ◽  
pp. 02006
Author(s):  
Konstantinos Pikounis ◽  
Ekaterini Tzamariudaki ◽  
Christos Markou
Keyword(s):  
Sea Water ◽  
Neutrino Flux ◽  
High Energy ◽  
Neutrino Detectors ◽  
Discovery Potential ◽  
Atmospheric Muon ◽  
Extraterrestrial Origin ◽  
Under Construction ◽  
Unambiguous Detection ◽  
Astrophysical Neutrino

KM3NeT is a research infrastructure housing the next generation neutrino detectors in the depths of the Mediterranean Sea. The ARCA detector, which is currently under construction, is optimized for neutrino searches from astrophysical sources as well as measurements of the diffuse high energy astrophysical flux. The unambiguous detection of neutrinos of extraterrestrial origin by IceCube has led to the first measurement of a high energy astrophysical neutrino flux. The cutting-edge technology used for the design and construction of KM3NeT Digital Optical Modules along with the properties of sea water allow for a measurement of the neutrino direction with an unpresidented resolution for both track and cascade events. Taking advantage of this angular resolution a method to differentiate track and shower events and a method to reject the atmospheric muon background from track-like events were developed and combined to select a sample of high energy starting events. An analysis for the discovery potential of KM3NeT/ARCA for a diffuse astrophysical neutrino flux using these events is presented.

scholarly journals ICECUBE OBSERVATORY: NEUTRINOS AND THE ORIGIN OF COSMIC RAYS

2013 ◽  
Vol 53 (A) ◽  
pp. 770-775
Author(s):  
Paolo Desiati
Keyword(s):  
Cosmic Rays ◽  
Cosmic Ray ◽  
High Energy ◽  
Neutrino Telescope ◽  
Current Status ◽  
Galactic Sources ◽  
Astrophysical Neutrino

The completed IceCube Observatory, the first km<sup>3</sup> neutrino telescope, is already providing the most stringent limits on the flux of high energy cosmic neutrinos from point-like and diffuse galactic and extra-galactic sources. The non-detection of extra-terrestrial neutrinos has important consequences on the origin of the cosmic rays. Here the current status of astrophysical neutrino searches, and of the observation of a persistent cosmic ray anisotropy above 100TeV, are reviewed.

scholarly journals NEUTRINO ASTRONOMY WITH ICECUBE

2009 ◽  
Vol 24 (20) ◽  
pp. 1543-1557 ◽  
Author(s):  
TYCE DeYOUNG
Keyword(s):  
Large Data ◽  
High Energy ◽  
Neutrino Telescope ◽  
Atmospheric Neutrinos ◽  
South Pole ◽  
Data Set ◽  
Fundamental Physics ◽  
Astrophysical Objects ◽  
Neutrino Astronomy ◽  
Under Construction

IceCube is a kilometer-scale high energy neutrino telescope under construction at the South Pole, a second-generation instrument expanding the capabilities of the AMANDA telescope. The scientific portfolio of IceCube includes the detection of neutrinos from astrophysical objects such as the sources of the cosmic rays, the search for dark matter, and fundamental physics using a very large data set of atmospheric neutrinos. The design and status of IceCube are briefly reviewed, followed by a summary of results to date from AMANDA and initial IceCube results from the 2007 run, with 22 of a planned 86 strings operational. The new infill array known as Deep Core, which will extend IceCube's capabilities to energies as low as 10 GeV, is also described.

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