Fast data-driven readout system for the wide aperture Silicon Tracking System of the BM@N experimentстатья
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Аннотация:The major upgrade of the BM@N experiment for the heavy ion program is a new hybrid trackingsystem. It consists of seven planes of GEM detectors and four silicon tracking stations based on the moduleswith double-sided microstrip silicon sensors of CBM type. The BM@N Silicon Tracking System (STS) willconceptually inherit the data acquisition system (DAQ) from the CBM silicon tracker currently in developmentfor FAIR. This is an entirely data driven acquisition system relying on purely self-triggering readoutchannels, which will also be adopted for the operation with BM@N trigger. The core components of the readoutchain are Front-end Boards (FEB), GBTxEmu board and GBTxEmu Readout Interface (GERI)board. The front-end board is an integrated part of the STS module. The main components of FEB areeight STS-XYTER ASICs which are needed for the readout of one side of the silicon sensor. The GBTxEmuboard comprises an FPGA which emulates functionality of the CERN GBTx ASIC and provides a bidirectionaloptical link between front-end electronics and data processing boards in the computer nodes. TheGERI board implements the following functionalities: concentrating and preprocessing of the data stream,filtering of the data according to the BM@N trigger signals and providing an interface for the Detector ControlSystem (DCS) to configure readout electronics.