| The Large Hadron Collider(LHC)will be running from 2022 to 2025,and the collision data readout rate of full-ring operation will reach 40 MHz.In order to meet the requirements of LHC operation and achieve a higher precision of particle tracks,one of the sub-detectors in Large Hadron Collider beauty(LHCb),the upstream track detector(UT),will be completely replaced and upgraded.The main component of the upgraded UT detector is the silicon microstrip detector,which has more silicon microstripes,smaller spacing,and denser sensor distribution.At the same time,to obtain more particle tracks,It is placed much closer to the center of the beam tube in space,which also means a more stable radiation resistance.Based on above background,the focus of the main research work in this paper will be on the design of the data readout system,which constitutes the minimum data reading unit in the silicon microstrip detector.The minimum data reading unit is composed of sensors,ASIC chips and peripheral circuits.By researching and testing the read-out system,we can predict the performance of the fully assembled UT detector in the radiation environment,which can provide a guarantee for the next large-scale production and installation.The main contents of this thesis include:(1)Clarify the orientation of the UT detector in LHCb experiment,and make the indicators of detector upgrade performance.(2)Using the principle of silicon microstrip detector to optimze the design of UT.(3)Separating the sensor,the ASIC SALT and the peripheral electronic circuit from the overall system by analyzing the data readout system that constitutes the minimum reading unit of the silicon microstrip detector.The technical indicators,the overall electrical characteristics and the data processing methods of each component can be specified in detail by setting up the experimental platform of simulated number taking.(4)Monitor its system operating status in the radiation environment during beam test,analyze its readout data to provide a reference for the stability and radiation resistance.Through experimental analysis,the detector data readout system preliminarily meets the design goals,and it has good performance in terms of data readout rate,cross-clock integration and radiation resistance.By analyzing the problems encountered during the experiment,we designed several auxiliary PCB boards to make it more perfect,which provides a experimental basis for the next round of UT detector upgrades. |
