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Tau Neutrino at Fermilab
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DONUT Details: The DONUT Detector

The 50-foot-long DONUT detector recorded six million potential interactions. The crucial component is the three-foot-long target station, which contains emulsion to record particle tracks, in particular the tracks of tau leptons. To reduce the data to about 1000 candidate neutrino events, other parts of the detector provided important information. They allowed scientists to locate promising tracks in the emulsion to within a few millimeters. These small emulsion areas then underwent careful analysis, eventually leading to the identification of five tau neutrino events.

DONUT Detector

  • The DONUT Target Station
  • Creating a Tau Neutrino Beam
  • Scientific Details of the DONUT Experiment: http://www-donut.fnal.gov/
  • FermiNews article about Fermilab's Fixed Target Program


  • last modified 1/16/2002   email Fermilab