FINUDA experiment

FINUDA (FIsica NUcleare a DAfne) is a non-focussing magnetic spectrometer, consisting of:

  • interaction/target region
  • external tracking system
  • outer scintillator array

The interaction/target region consists of a scintillator barrel (TOFINO), the inner silicon microstrip detector (ISIM) and the stopping target.
The external tracking system is composed of an outer silicon microstrip detector (OSIM), low-mass drift chambers (LMDC) and an array of straw-tube detectors (ST). An outer array of scintillation counters (TOFONE) completes the detector. The main topic of interest was the study of Lambda-hypernuclei energy levels and lifetimes, and their non-mesonic decays. Lambda-hypernuclei were produced by stopping negative kaons from phi decays in a thin target, with the prompt negative pion whose momentum is uniquely related to the energy level of the hypernucleus. By comparing non-mesonic decays of the hypernucleus into nn and np final states it is possible to confirm the validity of Δ I =1/2 rule in weak interactions.

Finuda exp Finuda detector

For more information: visit FINUDA website