Development of Telescope Readout System Based on FELIX for Testbeam Experiments

Abstract

The High Voltage CMOS (HV-CMOS) sensors are extensively investigated by the ATLAS collaboration in the High-Luminosity LHC (HL-LHC) upgrade of the Inner Tracker (ITk) detector. A testbeam telescope, based on the ATLAS IBL (Insertable B-Layer) silicon pixel modules, has been built to characterize the HV-CMOS sensor prototypes. The Front-End LInk eXchange (FE-LIX) system is a new approach to function as the gateway between front-ends and the commodity switched network in the different detectors of the ATLAS upgrade. A FELIX based readout system has been developed for the readout of the testbeam telescope, which includes a Telescope Readout FMC Card as interface between the IBL DC (double-chip) modules and a Xilinx ZC706 evaluation board. The test results show that the FELIX based telescope readout system is capable of sensor calibration and readout of a high-density pixel detector in test beam experiments in an effective way.

Test beam measurement of ams H35 HV-CMOS capacitively coupled pixel sensor prototypes with high-resistivity substrate

“…The hit bus signal of the first and the last telescope planes are combined to provide a trigger for the data acquisition system. The CaRIBOu system [13] was used for the slow control of the H35DEMO prototypes. DUT samples were mounted inside a thermally insulated box equipped with cooling provided by a chiller and maintained at 25 • C or less during data taking.…”