  The AMS-02 experiment is measuring the high energy charged cosmic rays with
unprecedented accuracy. We explore the possibility of determining the
cosmic-ray propagation models using the AMS-02 data $alone$. A global Bayesian
analysis of the constraints on the cosmic-ray propagation models from the
latest AMS-02 data on the Boron to Carbon nuclei flux ratio and proton flux is
performed, with the assumption that the primary nucleon source is a broken
power law in rigidity. The ratio of the diffusion coefficient $D_{0}$ to the
diffusive halo height $Z_{h}$ is found to be determined with high accuracy
$D_{0}/Z_{h}\simeq 2.00\pm0.07\text{cm}^{2}\text{s}^{-1}\text{kpc}^{-1}$. The
best-fit value of the halo width is $Z_{h}\simeq 3.3$ kpc with uncertainty less
than $50\$. As a consequence, the typical uncertainties in the positron
fraction is within a factor of two, and that in the antiproton flux is within
an order of magnitude. Both of them are significantly smaller than that from
the analyses prior to AMS-02. Taking into account all the uncertainties and
correlations in the propagation parameters we derive conservative upper limits
on the cross sections for DM annihilating into various standard model final
states from the current PAMELA antiproton data. We also investigate the
reconstruction capability of the future AMS-02 antiproton data on the DM
properties. The result shows that for DM particles lighter than 100 GeV and
with typical thermal annihilation cross section, the cross section can be well
reconstructed with uncertainties about a factor of two for the AMS-02
three-year data taking.
