Latest results from FENICE

The FENICE apparatus to measure the electromagnetic form factor of the neutron was built at the ADONE storage ring in Frascati and the reaction e+ e- > n nbar has been studied in the energy region between the threshold and 2.44 GeV in the center of mass. Preliminary results at 2.0 and 2.1 GeV have already been reported. New results are now available that confirm the eletromagnetic form factor of the neutron |Gn| not lower that proton form factor |Gp|

Some final results from the FENICE experiment

The first measurement of the neutron form factor in the time-like region has been produced in tha Fenice experiment by studying the e+ e- > n nbar reaction at the Adone storage ring.The most recent results at the energies of 1.92, 2.0, 2.1 GeV in the center of mass are reported in this paper

The Fenice Detector At the E+e- Collider Adone

The FENICE detector, installed at the Frascati e+e- storage ring ADONE, for measuring the neutron e.m. form factors in the timelike region, is described. FENICE is a nonmagnetic detector and consists of a complex array of scintillators, limited streamer tubes and iron converters for detecting mainly the process e+e- --> nnBAR. Antineutrons are identified by the charged prongs produced in their annihilation and the antineutron velocity is measured by the retrieved annihilation time with respect to the beam crossing time. Neutrons are detected in plastic scintillator layers. To reduce the cosmic rays background a concrete shield, covered by an active veto system, is added