  The sPHENIX experiment is a state-of-the-art jet and heavy flavor physics
detector which successfully recorded its first Au + Au collision data at 200
GeV at RHIC. sPHENIX will provide heavy flavor physics measurements covering an
unexplored kinematic region and unprecedented precision at RHIC to probe the
parton energy loss mechanism, parton transport coefficients in quark-gluon
plasma, and the hadronization process under various medium conditions. At the
center of sPHENIX, the Monolithic-Active-Pixel-Sensor (MAPS) based VerTeX
detector (MVTX) is a high-precision silicon pixel detector. The MVTX provides
excellent position resolution and the capability of operating in continuous
streaming readout mode, allowing precise vertex determination and recording a
large data sample, both of which are particularly crucial for heavy flavor
physics measurements. In this work, we will show the general performance of
heavy-flavor hadron reconstruction. In addition, we will discuss the
commissioning experience with sPHENIX. Finally, we will provide the projection
of b-hadron and jet observables and discuss the estimated constraints on
theoretical models.
