The E866 experimental setup has been upgraded by addition of a forward
spectrometer to handle the large multiplicities in central Au+Au coll
isions at AGS. Furthermore, new global detectors have been added to ga
in insight into the reaction dynamics and enable studies of flow effec
ts. The report presents preliminary rapidity distributions for protons
and produced mesons in central collisions. The shape of m(t)-spectra
of pions is discussed. Examples of the measurements which can be done
with a new multiplicity array are presented.