The sPHENIX Experiment at RHIC

The sPHENIX detector is the first new detector at RHIC in over twenty years and is designed to make precise jet and heavy flavor measurements to elucidate properties of the Quark-Gluon Plasma at very fine length scales. In 2023, sPHENIX took its first, commissioning run where it made two, established, standard-candle measurements: the π 0 v 2 and d E T / d η in 200 GeV Au + Au collisions. In 2024, sPHENIX took baseline 200 GeV p + p data with calorimeter jet and photon triggers collecting over 100 pb −1 of calorimeter-only hard probes data. Additionally, the tracking detectors were successfully commissioned in both triggered and streaming readout mode, with the latter being a first-of-its-kind achievement at RHIC.