Can you visit Super Kamiokande?

Can you visit Super Kamiokande?

From the viewpoint of safety management in the mine, individual tours are not permitted as a general rule. However, for educational and research-related organizations, visits may be accepted after coordination.

Can you visit Kamioka Observatory?

The entrance to KamiokaLab. Admission is free. The unusually named Kamiokande and Super Kamiokande observatories gained international renown first in 2002, when Koshiba Masatoshi won the Nobel Prize for physics for his discoveries there, and then again in 2015, when Kajita Takaaki was similarly honored.

What is inside the Super Kamiokande experiment?

It consists of a cylindrical stainless steel tank about 40 m (131 ft) in height and diameter holding 50,000 metric tons (55,000 US tons) of ultrapure water. Mounted on an inside superstructure are about 13,000 photomultiplier tubes that detect light from Cherenkov radiation.

Why was Super-Kamiokande built?

The enormous size of the Hyper-Kamiokande (Hyper-K) will enable it to detect unprecedented numbers of neutrinos produced by various sources — including cosmic rays, the Sun, supernovae and beams artificially produced by an existing particle accelerator.

Where is the Super-Kamiokande experiment?

Super-Kamiokande is located 1000 m underground in the Kamioka mine, Gifu prefecture, Japan. The horizontal entrance tunnel leads us to the experimental area through 1.7 km drive, which allows us to access the detector for 24 h for maintenance.

Why is the Kamioka observatory underground?

A proton decay detector must be buried deep underground or in a mountain because the background from cosmic ray muons in such a large detector located on the surface of the Earth would be far too large.

What is a neutrino burst?

Supernova neutrinos are produced when a massive star collapses at the end of its life, ejecting its outer mantle in an explosion. Wilson’s delayed neutrino explosion mechanism has been used for 30 years to explain core collapse supernova.

How do people detect neutrinos?

So how do you detect a neutrino? One common way is to fill a big tank with water. We know light slows down through water, and if a neutrino with enough energy happens to knock into an electron, the electron will zip through the water faster than the light does.

Who solved the solar neutrino problem?

The solar neutrino problem was solved on June 18, 2001 [1] by a team of collaborative Canadian, American, and British scientists. The results came from an experiment in a detector full of 1,000 tons of heavy water (D2O, or wa- ter composed of deuterium in place of hydrogen.

How do you catch neutrinos?

A neutrino is able to react with an atom of gallium-71, converting it into an atom of the unstable isotope germanium-71. The germanium was then chemically extracted and concentrated. Neutrinos were thus detected by measuring the radioactive decay of germanium.

When was Super-Kamiokande built?

The Super-Kamiokande was built so deep into the ground in order to shield the device from cosmic rays and other particles which can adversely affect observation. Construction started in 1991 and the observation facility went into operation in April 1996.

Why do neutrinos oscillate?

Neutrino oscillation arises from mixing between the flavor and mass eigenstates of neutrinos. That is, the three neutrino states that interact with the charged leptons in weak interactions are each a different superposition of the three (propagating) neutrino states of definite mass.

How does the Sudbury Neutrino Observatory work?

The experiment observed the light produced by relativistic electrons in the water created by neutrino interactions. As relativistic electrons travel through a medium, they lose energy producing a cone of blue light through the Cherenkov effect, and it is this light that is directly detected.

What is a Kamiokande neutrino detector?

How does the Sudbury Neutrino Observatory work?

The experiment observed the light produced by relativistic electrons in the water created by neutrino interactions. As relativistic electrons travel through a medium, they lose energy producing a cone of blue light through the Cherenkov effect, and it is this light that is directly detected.

Can we detect neutrinos?

Billions of them pass through us every second—mostly coming from our sun. But unlike the sunlight we can easily see, neutrinos are very hard to detect. To “see” them, we have to build really big detectors and block out signals from any other particles. Scientists do that by building neutrino detectors deep underground.

Why does neutrino oscillation imply mass?

The reason neutrino oscillation is relevant to the question of neutrino mass is that massless neutrinos cannot oscillate. The observation of oscillation implies that the masses of the neutrinos involved cannot be equal to one another. Since they cannot be equal to one another, they cannot both be zero.

Why do neutrinos oscillate?

Neutrino oscillation arises from mixing between the flavor and mass eigenstates of neutrinos. That is, the three neutrino states that interact with the charged leptons in weak interactions are each a different superposition of the three (propagating) neutrino states of definite mass.