DONUT

DONUT was an experiment at Fermilab, with which it first came in 2000, the tau neutrino () detected. DONUT stands for " Direct Observation of the Nu Tau". The experiment was realized in cooperation of 13 research institutions.

Generating the beam,

To generate the neutron beam high-energy protons have been shot at a tungsten block, which arise under other neutrinos. Since neutrinos only interact weakly, they can easily more screens happen while other particles are filtered from the beam. The DONUT experiment this screening was 15 feet thick.

Construction of the detector

The detector of the DONUT experiment is about 15 meters long. Its most important components are the four emulsion plates, which were used to measure the particle tracks. Particular interest was paid to the tracks of the leptons and their decays into a charged particle plus rest - so-called kinks. The remaining parts of the detector were essentially as a trigger and the preselection of the events.

Swell

• Experiment description of the Fermilab
• Lecture by Byron Lundberg occasion of the first indications

• Neutrino experiment
• Abbreviation