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Tau Neutrino at Fermilab
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DONUT Details: Creating a Tau Neutrino Beam

Fermilab's accelerators create beams of protons and their antiparticles. To obtain a neutrino beam, physicists direct a high-energy proton beam toward a block of high-density material like tungsten. When protons collide with atoms in the target, many different particles emerge, including neutrinos. Very strong magnets remove all charged particles from the beam. Fifteen meters of shielding stop all other particles -- except neutrinos, including the relatively rare tau neutrino.

Creating a Tau Neutrino Beam

  • The DONUT Detector
  • The DONUT Target Station
  • 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