  To study the nature of the quark-hadron phase transition, it is important to
investigate the space-time structure of the hadron-emitting source in heavy-ion
collisions. Measurements of HBT correlations have proven to be a powerful tool
to gain information about the source. In these proceedings, we report the
current status of the analysis of source parameters obtained from L\'evy fits
to the measured one-dimensional two-pion correlation functions in Au+Au
collisions at $\sqrt{s_{NN}}$ = 200 GeV.
