Information AboutMinos |
| CATEGORIES ABOUT MINOS | |
| greek mythology | |
| mythological kings | |
| people from crete | |
| minoan civilization | |
| pederastic heroes and deities | |
| characters in book vi of the aeneid | |
| offspring of zeus | |
| SHOPPER'S DELIGHT | |
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On March 30 2006 , the MINOS collaboration announced that the analysis of the initial data, collected in 2005, is consistent with neutrino oscillations {Link without Title} , with the oscillation parameters which are consistent with Super-K measurements. DETECTORS The far detector has a mass of 5.4 Ktons . It is located in the Soudan Mine in Northern Minnesota at a depth of 716 meters. The far detector has been fully operational since summer 2003, and has been taking Atmospheric Muon and Neutrino data since early in its construction. The near detector is similar to the far detector in design, but smaller in size with a mass of 980 Ton s. It is located at Fermi National Accelerator Laboratory FNAL , a few hundreds meters away from the Proton target, and approximately 100 meters underground. The commissioning of the near detector was completed in December 2004, and it is now fully operational. The MINOS experiment started detecting neutrinos from the NuMI beam in February 2005. NEUTRINO BEAM To produce the NuMI beamline 120 GeV Main Injector Proton pulses hit a water-cooled Graphite target. The resulting interactions of protons with the target material produce Pion s and Kaon s, which are focused by a system of Magnetic Horns . The neutrinos from subsequent decays of pions and kaons form the Neutrino Beam . Neutrino interactions in the near detector are used to measure the initial muon-neutrino Flux and energy spectrum. Because they are so weekly interacting the vast majority of the neutrinos travel through the Near detector and the 735km of rock, then through the far detector and off into space. On the way toward Soudan, a fraction of muon-neutrinos oscillate into other Flavor s. MINOS will measure the difference in neutrino beam composition and energy distribution in the near and far detectors with the aim of producing precision measurements of the neutrino squared mass difference and Oscillation angle. In addition, MINOS will look for the appearance of Electron Neutrinos in the far detector, and would either measure or set a limit on the oscillation probability of muon-neutrinos into electron-neutrinos. Both of the MINOS detectors are Steel - Scintillator sampling Calorimeters made out of alternating planes of magnetized steel and Plastic scintillator. The Magnetic Field causes the path of a muon produced in a muon neutrino interaction to bend, making it possible to separate neutrino and Antineutrino interactions. This unique feature of the MINOS detectors allows MINOS to search for CP violation with atmospheric neutrinos and anti-neutrinos. SEE ALSO EXTERNAL LINKS |