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The NESTOR Project (Neutrino Extended Submarine Telescope with Oceanographic Research Project) is an international scientific collaboration whose target is the deployment of a neutrino telescope on the sea floor off Pylos, Greece.

Neutrino
Main article: Neutrino

Neutrinos are elementary particles first detected in the 1950s, long after their theoretical prediction by theorist Wolfgang Pauli. Neutrinos (or anti-neutrinos) are created during certain nuclear reactions, where protons are transformed into neutrons and vice versa. Neutrinos do not interact with matter via either the electromagnetic, the strong nuclear, or gravitational forces, since they are electrically neutral leptons and their rest mass is very small. They interact with the nucleons (neutrons and protons) only via weak nuclear interactions. Since they do not interact with matter via the electromagnetic or gravitational forces, it is extremely difficult to detect them. Since their mass is very small (less than 14 eV) they travel with speeds that are very close to the speed of light in vacuum.
NESTOR Telescope
Main article: Neutrino detector

Because neutrinos are very weakly interacting, neutrino detectors must be very large in order to detect a significant number of neutrinos. After completion, NESTOR will consist of a large number of glass balls (the "eyes") containing photomultiplier tubes. The "eyes" are connected with star-shaped titanium frames. Many frames compose a NESTOR tower. The whole construction is placed at the bottom of the sea to reduce noise from cosmic radiation (depth 4000m). The detectors are connected with the terminal station through a 31-km-long deep-sea, optic fiber cable for data collection.

Pylos was selected for the installation of the telescope for several reasons. It combines deep water with close proximity to the shore, a convenient combination for the installation of the NESTOR towers and the communication and power supply cables. It is also located in an anti-diametric point with respect to the DUMAND neutrino telescope in the Pacific ocean and therefore, it is possible to compare observations and study correlations between the observed neutrino.

Original surveys of the seafloor were conducted in 1989, 1991, 1992 and scientific conferences of the NESTOR Collaboration were held in the 1990s.

In March 2003, the NESTOR prototype was lowered to the depth of 3800 meters some 30 kilometers off the coast of Greece.[1] The prototype's results were published in 2005.[2][3][4]

The spokesperson for the project is Leonidas Resvanis from University of Athens.

In 2014 the project was still applying funding to build the actual telescope.[5]

The NESTOR collaboration is now (2018) part of the KM3NeT-collaboration. As such, they are not developing the NESTOR telescope anymore as its own instance, but Km3Net has a planned telescope site off the coast of Pylos (which can thus be seen as a continuation of the NESTOR project to build an underwater telescope off the coast of Pylos). [6]
See also

Project DUMAND
ANTARES

References

"NESTOR sees muons at the bottom of the sea". CERN Courier. 30 April 2003.
Tzamarias, S.E. (2005). "Operation and performance of the NESTOR test detector: A measurement of the atmospheric muon flux". Nuclear Physics B - Proceedings Supplements. 143: 355–358. Bibcode:2005NuPhS.143..355T. doi:10.1016/j.nuclphysbps.2005.01.129.
Aggouras, G.; Anassontzis, E.G.; Ball, A.E.; Bourlis, G.; Chinowsky, W.; Fahrun, E.; Grammatikakis, G.; Green, C.; Grieder, P.; Katrivanos, P.; Koske, P.; Leisos, A.; Ludvig, J.; Markopoulos, E.; Minkowsky, P.; Nygren, D.; Papageorgiou, K.; Przybylski, G.; Resvanis, L.K.; Siotis, I.; Sopher, J.; Staveris, T.; Tsagli, V.; Tsirigotis, A.; Zhukov, V.A. (2005). "Operation and performance of the NESTOR test detector". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 552 (3): 420–439. Bibcode:2005NIMPA.552..420A. doi:10.1016/j.nima.2005.06.083.
Aggouras, G.; Anassontzis, E.; Ball, A.; Bourlis, G.; Chinowsky, W.; Fahrun, E.; Grammatikakis, G.; Green, C.; Grieder, P.; Katrivanos, P.; Katrivanos, P.; Koske, P.; Leisos, A.; Markopoulos, E.; Minkowsky, P.; Nygren, D.; Papageorgiou, K.; Przybylski, G.; Resvanis, L. K.; Siotis, I.; Sopher, J.; Staveris-Polikalas, A.; Tsagli, V.; Tsirigotis, A.; Zhukov, V. A. (2005). "A measurement of the cosmic-ray muon flux with a module of the NESTOR neutrino telescope". Astroparticle Physics. 23 (4): 377–392. Bibcode:2005APh....23..377N. doi:10.1016/j.astropartphys.2005.02.001.
"Nestor: Unravelling the universe's mysteries from the bottom of the sea | News | European Parliament". 2014-03-28.

https://fskbhe1.puk.ac.za/people/mboett/SAGAMMA/HEASA2018/presentations/Kouchner.pdf

Further reading

Feder, T. (2002). "Deep‐Sea Km3 Neutrino Detector Gets Thumbs Up". Physics Today. 55 (10): 20–21. Bibcode:2002PhT....55j..20F. doi:10.1063/1.1522156.
"Neutrino Astronomy: Deep and meaningful". The Economist. 24 October 2002.

External links

Official Webpage
XIX International Conference on Neutrino Physics & Astrophysics

vte

Neutrino detectors, experiments, and facilities
Discoveries

Cowan–Reines ( ν e) Lederman–Schwartz–Steinberger ( ν μ) DONUT ( ν τ) 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

Physics Encyclopedia

World

Index

Hellenica World - Scientific Library

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