A Triggerless readout system for the ANDA electromagnetic calorimeter

16th International Conference on Calorimetry in High Energy Physics

Tiemens, M.^1

KVI-Center for Advanced Radiation Technology, University of Groningen, Zernikelaan 25, AA Groningen

9747, Netherlands^1

关键词: Clock source;    Data readout;    Detector response;    Electromagnetic calorimeter;    Exotic state;    Interaction rate;    Pile-ups;    Trigger-less readouts;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/587/1/012025/pdf
DOI  :  10.1088/1742-6596/587/1/012025

来源: IOP

【 摘 要 】

One of the physics goals of the future ANDA experiment at FAIR is to research newly discovered exotic states. Because the detector response created by these particles is very similar to the background channels, a new type of data readout had to be developed, called "triggerless" readout. In this concept, each detector subsystem preprocesses the signal, so that in a later stage, high-level phyiscs constraints can be applied to select events of interest. A dedicated clock source using a protocol called SODANET over optical fibers ensures proper synchronisation between the components. For this new type of readout, a new way of simulating the detector response also needed to be developed, taking into account the effects of pile-up caused by the 20 MHz interaction rate.