Abstract
Our understanding of QCD under extreme conditions has advanced tremendously in the last 20 years with the discovery of the Quark Gluon Plasma and its characterisation in heavy ion collisions at RHIC and LHC. The sPHENIX detector planned at RHIC is designed to further study the microscopic nature of the QGP through precision measurements of jet, upsilon and open heavy flavor probes over a broad pT range. The multi-year sPHENIX physics program will commence in early 2023, using state-of-the art detector technologies to fully exploit the highest RHIC luminosities. The experiment incorporates the 1.4 T former BaBar solenoid magnet, and will feature high precision tracking and vertexing capabilities, provided by a compact TPC, Si-strip intermediate tracker and MAPS vertex detector. This is complemented by highly granular electromagnetic and hadronic calorimetry with full azimuthal coverage. In this document I describe the sPHENIX detector design and physics program, with particular emphasis on the comprehensive open heavy flavour program enabled by the experiment’s large coverage, high rate capability and precision vertexing.
Highlights
The ultimate exploration of the properties of the hot QCD matter formed in heavy ion collisions requires a complementary study of the observables produced at both RHIC and LHC energies
The sPHENIX detector [2] is a new detector at RHIC that replaces the PHENIX experiment, which concluded its final data taking run in 2016
The detector system has been designed to cope with the challenging physics goals that will be pursued at RHIC during its high intensity era in the 2020s
Summary
The ultimate exploration of the properties of the hot QCD matter formed in heavy ion collisions requires a complementary study of the observables produced at both RHIC and LHC energies. Since both accelerators collide ions at different center of mass energy, the initial temperature of the QGP will be different and so will the in-medium evolution of hard probes. The detector system has been designed to cope with the challenging physics goals that will be pursued at RHIC during its high intensity era in the 2020s In these proceedings, I will briefly described the main elements of the current detector design, its performance and the running scenario for a possible five year plan
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