Speaker
Description
The sPHENIX detector at BNL’s Relativistic Heavy Ion Collider (RHIC) will provide a detailed understanding of the evolution of the Quark-Gluon Plasma using precision measurements of jets and heavy flavors in heavy ion collisions at RHIC. The sPHENIX detector is based on the former BaBar 1.5T super-conducting solenoid and consists of precision tracking, electromagnetic (EMCal) and hadronic (HCal) calorimetry covering 2π in azimuth and |η| < 1.1. The EMCal is a 2D projective calorimeter consisting of scintillating fibers embedded in a tungsten powder infused epoxy. The HCal is a 2D projective design using tilted plates consisting of steel absorber and scintillating tiles with wave-shifting fibers. Both the EMCal and HCal calorimeters use a common electronics design for readout based on silicon photomultipliers (SiPMs) as the optical sensor. A custom designed analog front-end provides amplification and shaping for the 14-Bit ADC system designed specifically for sPHENIX which digitizes and records the waveforms for all of the 24576 EMCal and 1526 HCal towers. In addition, the digitizer system provides trigger primitives for the sPHENIX trigger system. We will present an overview of the design of the calorimeter electronics, status of the design and prospects for sPHENIX.
