Multifragmentation of the system alpha+ Au-197 has been studied at inc
ident energies of 1 and 3.6 GeV/nucleon with the new 4pi setup, FASA.
Mass, energy, and velocity of a few fragments are measured with high p
recision using time-of-flight telescopes, while for the other fragment
s, global multiplicity information is obtained from 55 CsI(Tl) detecto
rs covering the main part of 4pi. Very high mean IMF (intermediate mas
s fragment) multiplicities of [M]IMF=5.1 +/- 0.8 are observed at the h
igher incident energy. Compared to the lower incident energy, they inc
rease by 40%, indicating an increasing energy deposition with increasi
ng incident energy.