sPHENIX Intermediate Silicon Tracker

The sPNENIX collaboration completed the detector construction at the Relativistic Heavy Ion Collider in BNL, and the commissioning is ongoing to study the Quark-Gluon Plasma and cold-QCD. A detector complex consisting of the solenoid magnet, a hadron calorimeter, an electromagnetic calorimeter, a time projection chamber (TPC), a MAPS-based vertex detector (MVTX), and the intermediate silicon tracker (INTT). A tracking system formed by the three latter detectors enables us to measure the heavy flavor jets and identify the three upsilon states. The INTT contributes to high-precision tracking by detecting hit points between TPC and MVTX. Thanks to the great timing resolution, INTT can provide timing information of hits to eliminate pile-up events by misidentifying bunch-crossing.

This presentation will focus on the performance evaluation performed in the commissioning.