Characterization of Double Sided Silicon Strip Detectors from LYCCA modules for FAIR

University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

Author: Dalia Farghaly; [2019]

Keywords: Physics and Astronomy;

Abstract: Begun in 2010, the Lund-York-Cologne-CAlorimeter, LYCCA, collaboration is targeted at discovering exotic nuclear reaction products whilst implementing the possibility of both position tracking and measuring residual energies of relativistic particles. Each LYCCA module is composed of a double sided silicon detector and 9 CsI(Tl) detectors. This project is primarily focused on the Si detectors, the main aim being charaterization of 10 such modules and making sure they are in satisfactory condition to be delivered to FAIR. Values for the leakage current at full depletion voltage were recorded and energy resolution were extracted. In addition to this, 18 32-channels Cologne-produced preamplifiers were tested to ensure they are fully functional. The data was acquired using a FEBEX-MBS fully digital data acquisition system and calibrated using a Gnuplot script. The energy resolution per strip on both p- and n- sides as well as the energy resolution as a function of energy were extracted using python. All 10 LYCCA modules tested in this work fulfilled the requirements in both energy resolution and leakage current and are fit for experimental use.

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