Neutrino Ettore Majorana Observatory

The Neutrino Ettore Majorana Observatory is an international experiment ( French-led ) to study the properties of neutrinos with the purpose. Working groups worked on the detectors since 1989. It is named after Ettore Majorana.

NEMO 1 and 2

After the start of the NEMO Collaboration NEMO two prototype detectors were before the current experiment, called 3, built, and NEMO 1 NEMO2 that were in operation until 1997 and provided data or experience in dealing with neutrino detectors.

NEMO 3

Since 2003, NEMO 3 is used to search for the never observed neutrinoless double beta decay. The experiment was terminated in January 2011. A follow-up experiment, SuperNEMO, is in preparation.

The observation of double beta decay would provide fundamental data on the absolute mass and the matter / antimatter symmetry of neutrinos. The most important discovery was the decision, whether it is in neutrinos Dirac or Majorana particles around. The detector is in the underground laboratory Fréjus Underground Laboratory ( LSM) in Modane (Savoie, France).