Speaker
Description
AstroPix is a high-voltage CMOS (HV-CMOS) monolithic silicon sensor and a key component of the Barrel Imaging Calorimeter (BIC) for the ePIC experiment, alongside the lead/scintillating-fiber (Pb/SciFi) sampling calorimeter. Interleaved within the calorimeter layers, AstroPix provides fine-grained shower imaging, enabling critical performance capabilities such as electron/pion or gamma/pion separation.
Based on the ATLASPix design, the AstroPix sensor was originally developed for NASA’s All-sky Medium-Energy Gamma-ray Observatory eXplorer (AMEGO-X) and has been tested in parallel at Argonne National Laboratory (ANL) in a bench environment. Its precise energy and position resolutions, low noise, low power consumption, and minimal dead material satisfy the requirements of both the space mission and the BIC system in the future Electron-Ion Collider (EIC) detector.
As part of the ongoing detector R&D effort, I have been testing various AstroPix version 3 configurations: the single chip, a quad-chip assembly, a three-layer stack of quad chips, and a 9-chip PCB module that represents the smallest prototype unit of the imaging layer.
This presentation will highlight recent performance test results from these AstroPix configurations and provide an update on system-level testing status and synchronization efforts between AstroPix and the Pb/SciFi calorimeter at ANL.
