INR RAS - international collaborations
Particle physics - nonaccelerator experiments
is an abbreviation for the KArlsruhe TRItium Neutrino experiment, which is presently being assembled at Karlsruhe Institute of Technology, Germany. KATRIN, launched at 2001, will investigate absolute mass scale of neutrinos that is the most important open issue in neutrino physics. Neutrinos tiny mass is a clear indication for physics beyond the standard model of elementary particle physics. On the largest scales, neutrinos take part in shaping the visible structures in the Universe, as they influence the formation and the distribution of galaxies.
DOUBLE CHOOZ experiment was created to measure the value of neutrino mixing angle θ13. It is founded on the idea of using two identical detectors for doing relative measurements in reactor antineutrino flux. Double Chooz doing in France (l’Institut national de physique nucleaire et de physique des particules (IN2P3) is one of three experiments of the type like this taking place at present (two others are: Daya Bay (China) and RENO (Korea)). Before 2014 the measurements at Double Chooz were carried out by only one (far) detector but in spite of this the θ13 value was measured and it is appeared to be large enough (about 10 degrees) sin2θ13 = 0.109 ± 0.040. After 2014 we expect to start with near detector and this will allow to increase the accuracy at least factor 2, up to 0.02.
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