Testing and Characterization of Analog Electronics for the sPHENIX Experiment

The sPHENIX experiment is designed to measure jets with over 25,000 calorimeter detectors. These detectors are read out by more than 400 analog-to-digital converter (ADC) custom electronics. These electronics are critical to ensure highly precise and accurate measurements of jet energies. My research involved the visual inspection and testing of the ADC electronics. An injector module is used to input known charge to calibrate each channel's pedestal, gain, and overall linearity of response. Modules are also tested for a token-passing, high speed data transfer over the backplane to a transmitter module (XMIT). Results on the testing will be presented along with implications for the sPHENIX jet program.