Speaker
Description
LArPix is a low-power, self-triggering ASIC architecture designed for 2D pixelated charge readout in Liquid Argon Time Projection Chambers (LArTPCs), specifically the DUNE Near Detector. The architecture utilizes modular tiles hosting 10x16 arrays of interconnected readout ASICs that are configured in a static way to pass data chip-to-chip toward four readout aggregator chips on the edge of the tile. This talk will present a NIFTY simulation study of intelligent routing algorithms within the LArPix network that are designed to dynamically bypass faulty ASICs, manage network back-pressure, and balance traffic across the array. To evaluate the LArPix network performance under realistic physics conditions, we input hit distributions from LArTPC Monte Carlo simulations into the NIFTY simulation framework, which then generates realistic data loads and tracks each data packet hop-by-hop as it passes between chips towards the readout aggregators. Using high-occupancy hit distributions from neutrino beam spill simulations, we study the performance of different intelligent data routing algorithms and also measure optimal design attributes such as buffer size and chip heartbeat frequencies.