  The sPHENIX Time Projection Chamber Outer Tracker (TPOT) is a Micromegas
based detector. It is a part of the sPHENIX experiment that aims to facilitate
the calibration of the Time Projection Chamber, in particular the correction of
the time-averaged and beam-induced distortions of the electron drift. This
paper describes the detector mission, setup, construction, installation,
commissioning and performance during the first year of sPHENIX data taking.
