Streaming Readout of the CLAS12 Forward Tagger Using TriDAS and JANA2

TL;DR

This paper presents the development and testing of a streaming readout data acquisition system for the CLAS12 detector, integrating TriDAS, JANA2, and FPGA technology to enable real-time data processing and analysis.

Contribution

It introduces a novel streaming readout system combining TriDAS, JANA2, and FPGA components for the CLAS12 detector, enabling online event filtering and analysis.

Findings

Successful beam tests with 10GeV electrons demonstrate system functionality.

Integration of FPGA, TriDAS, and JANA2 enables real-time data processing.

System design details and performance metrics are provided.

Abstract

An effort is underway to develop streaming readout data acquisition system for the CLAS12 detector in Jefferson Lab's experimental Hall-B. Successful beam tests were performed in the spring and summer of 2020 using a 10GeV electron beam from Jefferson Lab's CEBAF accelerator. The prototype system combined elements of the TriDAS and CODA data acquisition systems with the JANA2 analysis/reconstruction framework. This successfully merged components that included an FPGA stream source, a distributed hit processing system, and software plugins that allowed offline analysis written in C++ to be used for online event filtering. Details of the system design and performance are presented.