Software-based data acquisition system for Level-1 end- cap muon trigger in ATLAS Run-3

In 2019, the ATLAS experiment at CERN is planning to undergo up- grade in order to cope with the higher luminosity requirements. In this upgrade, the installation of the new muon chambers for the end-cap muon system will be carried out. It is also necessary to develop readout system of trigger data for the Level-1 end-cap muon trigger. we have decided to develop software- based data acquisition system. This new readout system architecture is based on multi-process software, and can assemble events at a rate of 100 kHz. For data collection, the 10 Gbit Ethernet network switch is used. Moreover, we have optimized these processes to send data to the following system without any error. As above stated, our developed readout system is a very generic system. It is easier to modify and debug the system. We can also implement new functionalities more easily.