NEVOD
Encyclopedia
NEVOD is a neutrino detector
and cosmic ray
experiment that attempts to detect Cherenkov radiation
arising from interactions between water and charged particles (mostly muon
s). It represents the first attempt to perform such measurements at the earth's surface; it is because of this surface deployment that the experiment is also able to investigate cosmic rays. NEVOD is situated at the Moscow Engineering Physics Institute (MEPhI).
The quasi-spherical modules are, in fact, not spherical, but consist of an array of 6 photomultiplier tubes arranged along the primary axes of the device. The arrangement of the PMTs is such that the response of the PMT is dependent only on the intensity of the incident radiation, but not on its angle of incidence (over the limitation of angles viewable by the device), rendering the entire detector "quasi-spherical".
Neutrino detector
A neutrino detector is a physics apparatus designed to study neutrinos. Because neutrinos are only weakly interacting with other particles of matter, neutrino detectors must be very large in order to detect a significant number of neutrinos. Neutrino detectors are often built underground to isolate...
and cosmic ray
Cosmic ray
Cosmic rays are energetic charged subatomic particles, originating from outer space. They may produce secondary particles that penetrate the Earth's atmosphere and surface. The term ray is historical as cosmic rays were thought to be electromagnetic radiation...
experiment that attempts to detect Cherenkov radiation
Cherenkov radiation
Cherenkov radiation is electromagnetic radiation emitted when a charged particle passes through a dielectric medium at a speed greater than the phase velocity of light in that medium...
arising from interactions between water and charged particles (mostly muon
Muon
The muon |mu]] used to represent it) is an elementary particle similar to the electron, with a unitary negative electric charge and a spin of ½. Together with the electron, the tau, and the three neutrinos, it is classified as a lepton...
s). It represents the first attempt to perform such measurements at the earth's surface; it is because of this surface deployment that the experiment is also able to investigate cosmic rays. NEVOD is situated at the Moscow Engineering Physics Institute (MEPhI).
Description
As described by its inventors, NEVOD consists of a water reservoir measuring into which is placed a spatial lattice of quasi-spherical detector modules (QSMs) to record Cherenkov radiation from any direction. The dimensions of reservoir make it possible to arrange up to 241 QSMs.The quasi-spherical modules are, in fact, not spherical, but consist of an array of 6 photomultiplier tubes arranged along the primary axes of the device. The arrangement of the PMTs is such that the response of the PMT is dependent only on the intensity of the incident radiation, but not on its angle of incidence (over the limitation of angles viewable by the device), rendering the entire detector "quasi-spherical".