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HK: Fachverband Physik der Hadronen und Kerne

HK 15: Instrumentation V

HK 15.1: Gruppenbericht

Montag, 28. März 2022, 16:00–16:30, HK-H4

A new high level filter system for the AMBER experiment at the CERN SPS — •Benjmain Moritz Veit for the AMBER collaboration — Institut für Kernphysik der Johannes Gutenberg-Universität, Mainz

AMBER is a new experiment at the European Organization for Nuclear Research (CERN) dedicated to study fundamental questions related to the emergence of hadron mass from QCD. Therefore a variety of measurements with muon and hadron beams, which will cover a wide range in the squared four-momentum transfer Q2, at the M2 beam line of the Super Proton Synchrotron (SPS) are forseen. One of the first measurements in AMBER phase 1 is the elastic scattering of high-energy muons off protons to precisely determine the proton charge radius. For this experiment, it is planned to transform the current classical DAQ approach to a streaming DAQ scheme, in which detectors deliver continuous time-stamped data streams with data rates of up to 20GB/s to the DAQ. This data streams will be concentrated by a system of FPGA-based multiplexers and a timeslice builder switch before the full data stream is stored by readout computers on a temporary local storage. The local storage allows for extraction and validation of calibration information before the final processing. The newly developed asynchronous running high level filter system (HLT) use this information to partially reconstructed, analyse, and eventually reduced the amount of data. The goal of the filter system is to reduce the data rate below 500MB/s before it is written to permanent storage. An overview of the design of the filter system will be presented.