Speaker
Description
The sPHENIX TPC is a double-sided, GEM-based, gaseous drift detector covering full azimuth and |η| < 1.1. The TPC is instrumented with 624 Front End Electronics (FEE) Cards which perform analogue/digital conversion, pulse shaping, and zero suppression. The FEE cards use 8 SAMPA v5 ASIC chips with shaping time of 80 ns, digitization rate of 20 MHz, and 10-bit adc ouptut for 256 pads each. The data/timing distribution and routing to/from the FEEs is done using a system of FrontEnd LInk eXchange (FELIX) cards. The FEE and FELIX cards along with the back-end servers (Event Buffer and Data Compression or EBDCs) constitute the TPC Data Acquisition (DAQ) system. The TPC DAQ operates in a unique hybrid trigger-streaming mode which reached 30 % of its full streaming rate during sPHENIX proton-proton data taking - 3 times its goal. This talk will present an overview of the TPC Readout System including a summary of its use during the sPHENIX Run '23 and '24 periods including as well as outlook for future Run '25.
